TY  - JOUR
AU  - Karamanov, Alexander
AU  - Smiljanić, Sonja
AU  - Karamanova, Emilia
AU  - Matijašević, Srđan D.
AU  - Nikolić, Jelena
AU  - Savić, Veljko
AU  - Grujić, Snežana
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4386
AB  - Sintering, crystallization and foaming of nano glass powders with composition La2O3 center dot SrO center dot 5B(2)O(3) were studied by hot stage microscopy (HSM) and simultaneous thermal analysis (DTA-TG) under non-isothermal regime at 10 degrees C/min and by optical contactless dilatometer under isothermal conditions at 700 degrees C up to 10 hours for different times. After the thermal treatments, specimens were characterized by gas pycnometry, X-ray Powder Diffraction (XRD) and Field Emission Scanning Electron Microscopes (FE-SEM). The results demonstrate that the densification completed before the crystallization process, thus forming well sintered samples. Then, during the phase formation gas is released, which leads to foaming process. After holding of 160 minutes at 700 degrees C the degree of crystallization reached about 0.8 and the foaming stopped. The obtained sample had high closed porosity and quite intriguing structure composed of two fairly different crystal arrangements. The first was "sponge-like", while the second was denser and consisted of "sheets", 10-30 nm thick. The subsequent holding led to re-crystallization, formation of larger denser zones that reached even 10-15 mu m and an increase in open porosity. These results highlight that in the case of sinter crystallization of nano powders, some intriguing features can be expected.
PB  - Elsevier, Amsterdam
T2  - Journal of Non-Crystalline Solids
T1  - Sintering, crystallization and foaming of La2O3 center dot SrO center dot 5B(2)O(3) glass powders: effect of the holding time
VL  - 544
DO  - 10.1016/j.jnoncrysol.2020.120168
ER  - 

@article{
author = "Karamanov, Alexander and Smiljanić, Sonja and Karamanova, Emilia and Matijašević, Srđan D. and Nikolić, Jelena and Savić, Veljko and Grujić, Snežana",
year = "2020",
abstract = "Sintering, crystallization and foaming of nano glass powders with composition La2O3 center dot SrO center dot 5B(2)O(3) were studied by hot stage microscopy (HSM) and simultaneous thermal analysis (DTA-TG) under non-isothermal regime at 10 degrees C/min and by optical contactless dilatometer under isothermal conditions at 700 degrees C up to 10 hours for different times. After the thermal treatments, specimens were characterized by gas pycnometry, X-ray Powder Diffraction (XRD) and Field Emission Scanning Electron Microscopes (FE-SEM). The results demonstrate that the densification completed before the crystallization process, thus forming well sintered samples. Then, during the phase formation gas is released, which leads to foaming process. After holding of 160 minutes at 700 degrees C the degree of crystallization reached about 0.8 and the foaming stopped. The obtained sample had high closed porosity and quite intriguing structure composed of two fairly different crystal arrangements. The first was "sponge-like", while the second was denser and consisted of "sheets", 10-30 nm thick. The subsequent holding led to re-crystallization, formation of larger denser zones that reached even 10-15 mu m and an increase in open porosity. These results highlight that in the case of sinter crystallization of nano powders, some intriguing features can be expected.",
publisher = "Elsevier, Amsterdam",
journal = "Journal of Non-Crystalline Solids",
title = "Sintering, crystallization and foaming of La2O3 center dot SrO center dot 5B(2)O(3) glass powders: effect of the holding time",
volume = "544",
doi = "10.1016/j.jnoncrysol.2020.120168"
}

Karamanov, A., Smiljanić, S., Karamanova, E., Matijašević, S. D., Nikolić, J., Savić, V.,& Grujić, S.. (2020). Sintering, crystallization and foaming of La2O3 center dot SrO center dot 5B(2)O(3) glass powders: effect of the holding time. in Journal of Non-Crystalline Solids
Elsevier, Amsterdam., 544.
https://doi.org/10.1016/j.jnoncrysol.2020.120168

Karamanov A, Smiljanić S, Karamanova E, Matijašević SD, Nikolić J, Savić V, Grujić S. Sintering, crystallization and foaming of La2O3 center dot SrO center dot 5B(2)O(3) glass powders: effect of the holding time. in Journal of Non-Crystalline Solids. 2020;544.
doi:10.1016/j.jnoncrysol.2020.120168 .

Karamanov, Alexander, Smiljanić, Sonja, Karamanova, Emilia, Matijašević, Srđan D., Nikolić, Jelena, Savić, Veljko, Grujić, Snežana, "Sintering, crystallization and foaming of La2O3 center dot SrO center dot 5B(2)O(3) glass powders: effect of the holding time" in Journal of Non-Crystalline Solids, 544 (2020),
https://doi.org/10.1016/j.jnoncrysol.2020.120168 . .

TY  - JOUR
AU  - Vujošević, Ana
AU  - Matijašević, Srđan D.
AU  - Smiljanić, Sonja
AU  - Nikolić, Jelena
AU  - Zečević, Bogoljub
AU  - Topalović, Vladimir
AU  - Savić, Veljko
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4270
AB  - Due to the dissolution properties the phosphate glasses can be promising materials for the development of new ecologically safe fertilizers. The complex polyphosphate glass with a molar ratio (M2O + MO)/P2O5  gt 1 and addition of microelements Zn2+, Mn2+, Fe3+ and Cu2+ were used in substrate for production of flower and vegetables seedlings. Dissolution tests were conducted in deionized water and 2% citric acid. The effects of the reaction time on the normalized glass mass loss (fm) and the normalized concentrations of the ions (fi) at 20, 30, 37 and 50°C were determined. Dissolution rate constants (kw - deionized water, kc -2% citric acid) were also determined (kw-0.0028-0.0094 gm-2, kc-0.029-0.011 gm-2). Values of kc were higher than those of kw, which confirms a significant effect of solvent type and temperature on the dissolution kinetics of glass. The experiments with plants (one vegetable and one flower) showed that the addition of phosphate glass caused an increase in yield and quality of plants. The applied dose of polyphosphate glass of 1gl-1 showed the best effect on the growth of the examined plant seedlings.
AB  - Polifosfatno staklo, u kome je molski odnos (M2O + MO)/P2O5  gt 1, koje sadrži i mikroelemente Zn2+, Mn2+, Fe3+ i Cu2+, korišćeno je u supstratu za proizvodnju rasada cveća i povrća. Eksperimenti su izvedeni u stakleniku na Poljoprivrednom fakultetu u Beogradu i u laboratorijama ITNMS. Ispitivano je ponašanje polifosfatnog stakla prilikom rastvaranja u dejonizovanoj vodi i 2% rastvoru limunske kiseline na temperaturama od 20, 30, 37 i 50 °C. Ispitan je uticaj vremena rastvaranja na normalizovani gubitak mase (fm) i normalizovane koncentracije jona (fi). Određene su i konstante brzina rastvaranja(kw-dejonizovana voda, kc -2% rastvor limunske kiseline). Vrednosti kc su veće od vrednosti za kw, što potvrđuje uticaj rastvarača i temperature na proces rastvaranja. Rezultati su pokazali pozitivan efekat polifosfatnog stakla na rast i kvalitet ispitivanih biljaka. Primenjena doza polifosfatnog stakla od 1 gl-1 pokazala je najbolji efekat na rast ispitivanih biljaka-rasada.
PB  - Engineering Society for Corrosion, Belgrade, Serbia
T2  - Zaštita materijala
T1  - Polyphosphate glass as fertilizer for plant seedlings
T1  - Efekat primene polifosfatnog stakla u supstratima za gajenje cveća i povrća
EP  - 104
IS  - 1
SP  - 96
VL  - 60
DO  - 10.5937/zasmat1901096V
ER  - 

@article{
author = "Vujošević, Ana and Matijašević, Srđan D. and Smiljanić, Sonja and Nikolić, Jelena and Zečević, Bogoljub and Topalović, Vladimir and Savić, Veljko",
year = "2019",
abstract = "Due to the dissolution properties the phosphate glasses can be promising materials for the development of new ecologically safe fertilizers. The complex polyphosphate glass with a molar ratio (M2O + MO)/P2O5  gt 1 and addition of microelements Zn2+, Mn2+, Fe3+ and Cu2+ were used in substrate for production of flower and vegetables seedlings. Dissolution tests were conducted in deionized water and 2% citric acid. The effects of the reaction time on the normalized glass mass loss (fm) and the normalized concentrations of the ions (fi) at 20, 30, 37 and 50°C were determined. Dissolution rate constants (kw - deionized water, kc -2% citric acid) were also determined (kw-0.0028-0.0094 gm-2, kc-0.029-0.011 gm-2). Values of kc were higher than those of kw, which confirms a significant effect of solvent type and temperature on the dissolution kinetics of glass. The experiments with plants (one vegetable and one flower) showed that the addition of phosphate glass caused an increase in yield and quality of plants. The applied dose of polyphosphate glass of 1gl-1 showed the best effect on the growth of the examined plant seedlings., Polifosfatno staklo, u kome je molski odnos (M2O + MO)/P2O5  gt 1, koje sadrži i mikroelemente Zn2+, Mn2+, Fe3+ i Cu2+, korišćeno je u supstratu za proizvodnju rasada cveća i povrća. Eksperimenti su izvedeni u stakleniku na Poljoprivrednom fakultetu u Beogradu i u laboratorijama ITNMS. Ispitivano je ponašanje polifosfatnog stakla prilikom rastvaranja u dejonizovanoj vodi i 2% rastvoru limunske kiseline na temperaturama od 20, 30, 37 i 50 °C. Ispitan je uticaj vremena rastvaranja na normalizovani gubitak mase (fm) i normalizovane koncentracije jona (fi). Određene su i konstante brzina rastvaranja(kw-dejonizovana voda, kc -2% rastvor limunske kiseline). Vrednosti kc su veće od vrednosti za kw, što potvrđuje uticaj rastvarača i temperature na proces rastvaranja. Rezultati su pokazali pozitivan efekat polifosfatnog stakla na rast i kvalitet ispitivanih biljaka. Primenjena doza polifosfatnog stakla od 1 gl-1 pokazala je najbolji efekat na rast ispitivanih biljaka-rasada.",
publisher = "Engineering Society for Corrosion, Belgrade, Serbia",
journal = "Zaštita materijala",
title = "Polyphosphate glass as fertilizer for plant seedlings, Efekat primene polifosfatnog stakla u supstratima za gajenje cveća i povrća",
pages = "104-96",
number = "1",
volume = "60",
doi = "10.5937/zasmat1901096V"
}

Vujošević, A., Matijašević, S. D., Smiljanić, S., Nikolić, J., Zečević, B., Topalović, V.,& Savić, V.. (2019). Polyphosphate glass as fertilizer for plant seedlings. in Zaštita materijala
Engineering Society for Corrosion, Belgrade, Serbia., 60(1), 96-104.
https://doi.org/10.5937/zasmat1901096V

Vujošević A, Matijašević SD, Smiljanić S, Nikolić J, Zečević B, Topalović V, Savić V. Polyphosphate glass as fertilizer for plant seedlings. in Zaštita materijala. 2019;60(1):96-104.
doi:10.5937/zasmat1901096V .

Vujošević, Ana, Matijašević, Srđan D., Smiljanić, Sonja, Nikolić, Jelena, Zečević, Bogoljub, Topalović, Vladimir, Savić, Veljko, "Polyphosphate glass as fertilizer for plant seedlings" in Zaštita materijala, 60, no. 1 (2019):96-104,
https://doi.org/10.5937/zasmat1901096V . .

TY  - JOUR
AU  - Smiljanić, Sonja
AU  - Karamanova, Emilia
AU  - Grujić, Snežana
AU  - Rogan, Jelena
AU  - Stojanović, Jovica
AU  - Matijašević, Srđan D.
AU  - Karamanov, Alexander
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3989
AB  - The peculiarities of sinter-crystallization of La2O3 center dot SrO center dot 5B(2)O(3) fine glass powder (below 1 mu m) are investigated and discussed. The sintering was studied by contactless optical dilatometry and porosity measurements. The crystallization process was evaluated by differential scanning calorimetry (DSC) and the crystalline phase formation was analyzed by X-ray diffraction (XRD). Finally the microstructures of the samples sintered at different temperatures were observed by field emission scanning electron microscope (FESEM). The specific aim of this study was to highlight the influence of sintering temperature and heating rate on the densification process and the final structure of glass-ceramic samples. It was shown that zero water adsorption and minimum closed porosity of similar to 3% were obtained at heating rate of 2 degrees C/min and at about 1 h holding at 690 degrees C. The temperature increase accelerated intense foaming process that resulted in formation of total porosity of 35-45%. It was also demonstrated that the foaming depended on the heating rate: the higher the heating rate - the more intensive was the bloating. The observed foaming process was related to intensive crystallization and re-crystallization of La2O3 center dot SrO center dot 5B(2)O(3) crystal phase. The phase formation processes entirely completed after 30-60 min at 730-740 degrees C with the formation of intriguing and unusual crystal structures.
PB  - Elsevier Science Bv, Amsterdam
T2  - Journal of Non-Crystalline Solids
T1  - Sintering, crystallization and foaming of La2O3 center dot SrO center dot 5B(2)O(3) glass powders - effect of the holding temperature and the heating rate
EP  - 382
SP  - 375
VL  - 481
DO  - 10.1016/j.jnoncrysol.2017.11.009
ER  - 

@article{
author = "Smiljanić, Sonja and Karamanova, Emilia and Grujić, Snežana and Rogan, Jelena and Stojanović, Jovica and Matijašević, Srđan D. and Karamanov, Alexander",
year = "2018",
abstract = "The peculiarities of sinter-crystallization of La2O3 center dot SrO center dot 5B(2)O(3) fine glass powder (below 1 mu m) are investigated and discussed. The sintering was studied by contactless optical dilatometry and porosity measurements. The crystallization process was evaluated by differential scanning calorimetry (DSC) and the crystalline phase formation was analyzed by X-ray diffraction (XRD). Finally the microstructures of the samples sintered at different temperatures were observed by field emission scanning electron microscope (FESEM). The specific aim of this study was to highlight the influence of sintering temperature and heating rate on the densification process and the final structure of glass-ceramic samples. It was shown that zero water adsorption and minimum closed porosity of similar to 3% were obtained at heating rate of 2 degrees C/min and at about 1 h holding at 690 degrees C. The temperature increase accelerated intense foaming process that resulted in formation of total porosity of 35-45%. It was also demonstrated that the foaming depended on the heating rate: the higher the heating rate - the more intensive was the bloating. The observed foaming process was related to intensive crystallization and re-crystallization of La2O3 center dot SrO center dot 5B(2)O(3) crystal phase. The phase formation processes entirely completed after 30-60 min at 730-740 degrees C with the formation of intriguing and unusual crystal structures.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Journal of Non-Crystalline Solids",
title = "Sintering, crystallization and foaming of La2O3 center dot SrO center dot 5B(2)O(3) glass powders - effect of the holding temperature and the heating rate",
pages = "382-375",
volume = "481",
doi = "10.1016/j.jnoncrysol.2017.11.009"
}

Smiljanić, S., Karamanova, E., Grujić, S., Rogan, J., Stojanović, J., Matijašević, S. D.,& Karamanov, A.. (2018). Sintering, crystallization and foaming of La2O3 center dot SrO center dot 5B(2)O(3) glass powders - effect of the holding temperature and the heating rate. in Journal of Non-Crystalline Solids
Elsevier Science Bv, Amsterdam., 481, 375-382.
https://doi.org/10.1016/j.jnoncrysol.2017.11.009

Smiljanić S, Karamanova E, Grujić S, Rogan J, Stojanović J, Matijašević SD, Karamanov A. Sintering, crystallization and foaming of La2O3 center dot SrO center dot 5B(2)O(3) glass powders - effect of the holding temperature and the heating rate. in Journal of Non-Crystalline Solids. 2018;481:375-382.
doi:10.1016/j.jnoncrysol.2017.11.009 .

Smiljanić, Sonja, Karamanova, Emilia, Grujić, Snežana, Rogan, Jelena, Stojanović, Jovica, Matijašević, Srđan D., Karamanov, Alexander, "Sintering, crystallization and foaming of La2O3 center dot SrO center dot 5B(2)O(3) glass powders - effect of the holding temperature and the heating rate" in Journal of Non-Crystalline Solids, 481 (2018):375-382,
https://doi.org/10.1016/j.jnoncrysol.2017.11.009 . .

TY  - JOUR
AU  - Matijašević, Srđan D.
AU  - Grujić, Snežana
AU  - Topalović, Vladimir S.
AU  - Nikolić, Jelena D.
AU  - Smiljanić, Sonja
AU  - Labus, Nebojša
AU  - Savić, Veljko
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3895
AB  - Crystallization kinetics of 22.5Li(2)O center dot 10Al(2)O(3)center dot 30GeO(2)center dot 37.5P(2)O(5) (mol%) glass was studied under non-isothermal condition using the differential thermal analysis (DTA). The study was performed by using the first crystallization peak temperature (T-p1) which belongs to the precipitation of LiGe2(PO4)(3) phase in the glass. The activation energy of glass crystallization (E-a) was determined using different isokinetic methods. The dependence of E-a on the degree of glass-crystal transformation (alpha) was studied using model-free isoconversional linear integral KAS (Kissinger-Akahira-Sunose) and FWO (Flynn-Wall-Ozawa) methods. It was shown that the E-a varies with a and hence with temperature and consequently the glass/crystal transformation can be described as a complex process involving different mechanisms of nucleation and growth.
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - Non-Isothermal Crystallization of Lithium Germanophosphate Glass Studied by Different Kinetic Methods
EP  - 203
IS  - 2
SP  - 193
VL  - 50
DO  - 10.2298/SOS1802193M
ER  - 

@article{
author = "Matijašević, Srđan D. and Grujić, Snežana and Topalović, Vladimir S. and Nikolić, Jelena D. and Smiljanić, Sonja and Labus, Nebojša and Savić, Veljko",
year = "2018",
abstract = "Crystallization kinetics of 22.5Li(2)O center dot 10Al(2)O(3)center dot 30GeO(2)center dot 37.5P(2)O(5) (mol%) glass was studied under non-isothermal condition using the differential thermal analysis (DTA). The study was performed by using the first crystallization peak temperature (T-p1) which belongs to the precipitation of LiGe2(PO4)(3) phase in the glass. The activation energy of glass crystallization (E-a) was determined using different isokinetic methods. The dependence of E-a on the degree of glass-crystal transformation (alpha) was studied using model-free isoconversional linear integral KAS (Kissinger-Akahira-Sunose) and FWO (Flynn-Wall-Ozawa) methods. It was shown that the E-a varies with a and hence with temperature and consequently the glass/crystal transformation can be described as a complex process involving different mechanisms of nucleation and growth.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "Non-Isothermal Crystallization of Lithium Germanophosphate Glass Studied by Different Kinetic Methods",
pages = "203-193",
number = "2",
volume = "50",
doi = "10.2298/SOS1802193M"
}

Matijašević, S. D., Grujić, S., Topalović, V. S., Nikolić, J. D., Smiljanić, S., Labus, N.,& Savić, V.. (2018). Non-Isothermal Crystallization of Lithium Germanophosphate Glass Studied by Different Kinetic Methods. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 50(2), 193-203.
https://doi.org/10.2298/SOS1802193M

Matijašević SD, Grujić S, Topalović VS, Nikolić JD, Smiljanić S, Labus N, Savić V. Non-Isothermal Crystallization of Lithium Germanophosphate Glass Studied by Different Kinetic Methods. in Science of Sintering. 2018;50(2):193-203.
doi:10.2298/SOS1802193M .

Matijašević, Srđan D., Grujić, Snežana, Topalović, Vladimir S., Nikolić, Jelena D., Smiljanić, Sonja, Labus, Nebojša, Savić, Veljko, "Non-Isothermal Crystallization of Lithium Germanophosphate Glass Studied by Different Kinetic Methods" in Science of Sintering, 50, no. 2 (2018):193-203,
https://doi.org/10.2298/SOS1802193M . .

TY  - THES
AU  - Smiljanić, Sonja
PY  - 2017
UR  - http://eteze.bg.ac.rs/application/showtheses?thesesId=5164
UR  - https://fedorabg.bg.ac.rs/fedora/get/o:16021/bdef:Content/download
UR  - http://vbs.rs/scripts/cobiss?command=DISPLAY&base=70036&RID=49207567
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4658
AB  - The subject of this doctoral thesis is the study of the crystallization behavior and the sinterability of the borate glasses system La2O3-B2O3-SrO. In literature there are limited data from the crystallization characteristics and sinterability of these glasses. Preliminary goal of this study was to investigate 4 different composition of the system, in which the content lanthanum of was increased at the expense of the strontium, while the boron content remained unchanged: 5,7La2O3·22,9SrO·71,4B2O3; 9,5La2O3·19,1SrO·71,4B2O3; 14,3La2O3·14,3SrO·71,4B2O3 and 19,1La2O3·9,5SrO·71,4B2O3. Physical and the structural properties as well as the crystallization characteristics and sinterability of glasses were investigated. Crystallization behavior was studied by the differentially thermal analysis (DTA), X-ray diffraction (XRD), transmission and scanning electron microscopy (TEM and SEM), while the sinterability by the hot stage microscopy (HSM) and DTA. For the identification of the crystalline phases after thermal treatment (after the crystallization) XRD was used. Mechanism of the crystallization and the resulting phase microstructure were observed by SEM. The results of the preliminary investigations revealed that the glass 14,3La2O3·14,3SrO·71,4B2O3 shows the specific crystallization and sinterabilty characteristics. Based on XRD, TEM and SEM results the surface crystallization mechanisam was detected, where the obtained crystalline phase was of the same composition as the initial glass (polymorphic crystallization). In the literature there are no data for this crystalline phase, so XRD and TEM were used for the determination of the unit cell parameters. In order to obtain the best possible sintering results, the glass powder of extremely small particles (nanoparticles) was prepared. The sintering process was followed by the DTA, HSM and the contactless optical dilatometer. The effects of the sintering temperature, as well as the heating rate up to sintering temperatures, on the sintering efficiency were investigated. The quality of sintering, densification of the samples, was evaluated by the measuring the porosity of samples after the thermal treatment. XRD was used to determine the composition of the phase resulting from sintering. The sintered samples were analysed by SEM, equipped with secondary electron (SE) and backscattered electron detectors (BSE), to gain insight in the porosity and the microstructure of the obtained glass-ceramic...
AB  - Predmet ove doktorske disertacije je ispitvanje kristalizacionog ponašanja i sinterabilnosti boratnih stakala iz sistema La2O3-SrO-B2O3, o čemu postoji ograničen broj podataka u literaturi. Preliminarna ispitivanja su obuhvatala dobijanje 4 različita sastava ovog sistema, tako što se sadržaj lantana povećavao na račun stroncijuma, dok je sadržaj bora bio konstantan: 5,7La2O3·22,9SrO·71,4B2O3; 9,5La2O3·19,1SrO·71,4B2O3; 14,3La2O3·14,3SrO·71,4B2O3 i 19,1La2O3·9,5SrO·71,4B2O3. Isptivana su fizička i strukturna svojstva kao i kristalizacione karakteristike i sinterabilnost. Kristalizaciono ponašanje stakala praćeno je diferencijalnom termijskom analizom (DTA), rendgenskom difrakcijom praha (XRD), transmisionim i skenirajućim elektronskim mikroskopima (TEM i SEM), dok je sinterabilnost prahova praćena primenom termomikroskopa (TM) i DTA. Rendgenskom difrakcijom praha identifikovane su faze nastale tokom toplotne obrade, odnosno nakon kristalizacije, dok je mehanizam kristalizacije, kao i mikrostruktura stakla nakon toplotne obrade ispitivana SEM-om. Rezultati početnih ispitivanja ukazali su da staklo 14,3La2O3·14,3SrO·71,4B2O3 pokazuje niz specifičnosti u pogledu kristalizacionih karakteristika, kao i sinterabilnosti. Na osnovu rezultata XRD, TEM i SEM analize utvrđen je površinski mehanizam rasta kristalne faze koja je istog sastava kao i staklo (polimorfna kristalizacija). Za ovu fazu u literaturi ne postoje podaci, tako da su na osnovu TEM i XRD analize dobijeni podaci za jediničnu ćeliju. U cilju dobijanja što boljih rezultata sinterovanja pripremljen je prah stakla izuzetno malih veličina čestica. Proces sinterovanja, odnosno, sinter-kristalizacije praćen je korišćenjem DTA, TM i optičkog dilatometra. Ispitivan je uticaj temperature sinterovanja, kao i brzine zagrevanja do izabrane temperature sinterovanja na efikasnost sinterovanja. Stepen denzifikacije, uzoraka je određen merenjem poroznosti nakon toplotne obrade. Za identifikaciju faza koje su nastale u sinterovanim uzorcima korišćena je XRD tehnika. Sinterovani uzorci su analizirani skenirajućim elektronskim mikroskopom, primenom detektora sekundarnih elektrona, SE, i povratno rasejanih elektrona, BSE, da bi se stekao uvid u poroznost i u mikrostrukturu nastale staklo-keramike...
PB  - Univerzitet u Beogradu, Tehnološko-metalurški fakultet
T1  - Crystallization and sinterability of lanthanum-strontium-borate-glass powders
T1  - Kristalizacione karakteristike i sinterabilnost prahova lantan-stroncijum-boratnih stakala
UR  - https://hdl.handle.net/21.15107/rcub_technorep_4658
ER  - 

@phdthesis{
author = "Smiljanić, Sonja",
year = "2017",
abstract = "The subject of this doctoral thesis is the study of the crystallization behavior and the sinterability of the borate glasses system La2O3-B2O3-SrO. In literature there are limited data from the crystallization characteristics and sinterability of these glasses. Preliminary goal of this study was to investigate 4 different composition of the system, in which the content lanthanum of was increased at the expense of the strontium, while the boron content remained unchanged: 5,7La2O3·22,9SrO·71,4B2O3; 9,5La2O3·19,1SrO·71,4B2O3; 14,3La2O3·14,3SrO·71,4B2O3 and 19,1La2O3·9,5SrO·71,4B2O3. Physical and the structural properties as well as the crystallization characteristics and sinterability of glasses were investigated. Crystallization behavior was studied by the differentially thermal analysis (DTA), X-ray diffraction (XRD), transmission and scanning electron microscopy (TEM and SEM), while the sinterability by the hot stage microscopy (HSM) and DTA. For the identification of the crystalline phases after thermal treatment (after the crystallization) XRD was used. Mechanism of the crystallization and the resulting phase microstructure were observed by SEM. The results of the preliminary investigations revealed that the glass 14,3La2O3·14,3SrO·71,4B2O3 shows the specific crystallization and sinterabilty characteristics. Based on XRD, TEM and SEM results the surface crystallization mechanisam was detected, where the obtained crystalline phase was of the same composition as the initial glass (polymorphic crystallization). In the literature there are no data for this crystalline phase, so XRD and TEM were used for the determination of the unit cell parameters. In order to obtain the best possible sintering results, the glass powder of extremely small particles (nanoparticles) was prepared. The sintering process was followed by the DTA, HSM and the contactless optical dilatometer. The effects of the sintering temperature, as well as the heating rate up to sintering temperatures, on the sintering efficiency were investigated. The quality of sintering, densification of the samples, was evaluated by the measuring the porosity of samples after the thermal treatment. XRD was used to determine the composition of the phase resulting from sintering. The sintered samples were analysed by SEM, equipped with secondary electron (SE) and backscattered electron detectors (BSE), to gain insight in the porosity and the microstructure of the obtained glass-ceramic..., Predmet ove doktorske disertacije je ispitvanje kristalizacionog ponašanja i sinterabilnosti boratnih stakala iz sistema La2O3-SrO-B2O3, o čemu postoji ograničen broj podataka u literaturi. Preliminarna ispitivanja su obuhvatala dobijanje 4 različita sastava ovog sistema, tako što se sadržaj lantana povećavao na račun stroncijuma, dok je sadržaj bora bio konstantan: 5,7La2O3·22,9SrO·71,4B2O3; 9,5La2O3·19,1SrO·71,4B2O3; 14,3La2O3·14,3SrO·71,4B2O3 i 19,1La2O3·9,5SrO·71,4B2O3. Isptivana su fizička i strukturna svojstva kao i kristalizacione karakteristike i sinterabilnost. Kristalizaciono ponašanje stakala praćeno je diferencijalnom termijskom analizom (DTA), rendgenskom difrakcijom praha (XRD), transmisionim i skenirajućim elektronskim mikroskopima (TEM i SEM), dok je sinterabilnost prahova praćena primenom termomikroskopa (TM) i DTA. Rendgenskom difrakcijom praha identifikovane su faze nastale tokom toplotne obrade, odnosno nakon kristalizacije, dok je mehanizam kristalizacije, kao i mikrostruktura stakla nakon toplotne obrade ispitivana SEM-om. Rezultati početnih ispitivanja ukazali su da staklo 14,3La2O3·14,3SrO·71,4B2O3 pokazuje niz specifičnosti u pogledu kristalizacionih karakteristika, kao i sinterabilnosti. Na osnovu rezultata XRD, TEM i SEM analize utvrđen je površinski mehanizam rasta kristalne faze koja je istog sastava kao i staklo (polimorfna kristalizacija). Za ovu fazu u literaturi ne postoje podaci, tako da su na osnovu TEM i XRD analize dobijeni podaci za jediničnu ćeliju. U cilju dobijanja što boljih rezultata sinterovanja pripremljen je prah stakla izuzetno malih veličina čestica. Proces sinterovanja, odnosno, sinter-kristalizacije praćen je korišćenjem DTA, TM i optičkog dilatometra. Ispitivan je uticaj temperature sinterovanja, kao i brzine zagrevanja do izabrane temperature sinterovanja na efikasnost sinterovanja. Stepen denzifikacije, uzoraka je određen merenjem poroznosti nakon toplotne obrade. Za identifikaciju faza koje su nastale u sinterovanim uzorcima korišćena je XRD tehnika. Sinterovani uzorci su analizirani skenirajućim elektronskim mikroskopom, primenom detektora sekundarnih elektrona, SE, i povratno rasejanih elektrona, BSE, da bi se stekao uvid u poroznost i u mikrostrukturu nastale staklo-keramike...",
publisher = "Univerzitet u Beogradu, Tehnološko-metalurški fakultet",
title = "Crystallization and sinterability of lanthanum-strontium-borate-glass powders, Kristalizacione karakteristike i sinterabilnost prahova lantan-stroncijum-boratnih stakala",
url = "https://hdl.handle.net/21.15107/rcub_technorep_4658"
}

Smiljanić, S.. (2017). Crystallization and sinterability of lanthanum-strontium-borate-glass powders. 
Univerzitet u Beogradu, Tehnološko-metalurški fakultet..
https://hdl.handle.net/21.15107/rcub_technorep_4658

Smiljanić S. Crystallization and sinterability of lanthanum-strontium-borate-glass powders. 2017;.
https://hdl.handle.net/21.15107/rcub_technorep_4658 .

Smiljanić, Sonja, "Crystallization and sinterability of lanthanum-strontium-borate-glass powders" (2017),
https://hdl.handle.net/21.15107/rcub_technorep_4658 .

TY  - JOUR
AU  - Topalović, Vladimir S.
AU  - Grujić, Snežana
AU  - Živanović, Vladimir D.
AU  - Matijašević, Srđan D.
AU  - Nikolić, Jelena D.
AU  - Stojanović, Jovica
AU  - Smiljanić, Sonja
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3583
AB  - Melt-quenching method was employed for obtaining a glass-ceramic with the following composition 42P(2)O(5). 40CaO.5SrO.10Na(2)O.3TiO(2) (mol%) glass. The crystallization and sintering behavior of glass have been studied by using DTA, HSM, XRD, FTIR and SEM methods. It was determined that the surface and volume crystallization mechanisms act simultaneously in bulk glass samples. The comparison of DTA and HSM data revealed that the sintering and crystallization processes are independent. The sintered calcium phosphate glass ceramic which contained bioactive beta-Ca-3(PO4)(2) and beta-Ca2P2O7 phases was successfully prepared. It was determined that during crystallization the primary phase in the precipitate was beta-Ca(PO3)(2). Other phases appearing in the resulting glass-ceramic were: alpha-Ca2P2O7, gamma-Ca2PO7, Ca4P6O19 and CaHPO4(H2O)(2). Crystalline phases containing Sr and Ti were not detected. SEM analysis of the glass-ceramic microstructure revealed surface crystallization of glass particles and plate-like morphology of crystal growth. The result of the in vitro bioactivity showed that no apatite layer was formed on the surface of the as-prepared glass-ceramic samples after immersion in the simulated body fluid (SBF).
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - Bioactive glass-ceramics prepared by powder sintering and crystallization of polyphosphate glass containing strontium
EP  - 12069
IS  - 15
SP  - 12061
VL  - 43
DO  - 10.1016/j.ceramint.2017.06.061
ER  - 

@article{
author = "Topalović, Vladimir S. and Grujić, Snežana and Živanović, Vladimir D. and Matijašević, Srđan D. and Nikolić, Jelena D. and Stojanović, Jovica and Smiljanić, Sonja",
year = "2017",
abstract = "Melt-quenching method was employed for obtaining a glass-ceramic with the following composition 42P(2)O(5). 40CaO.5SrO.10Na(2)O.3TiO(2) (mol%) glass. The crystallization and sintering behavior of glass have been studied by using DTA, HSM, XRD, FTIR and SEM methods. It was determined that the surface and volume crystallization mechanisms act simultaneously in bulk glass samples. The comparison of DTA and HSM data revealed that the sintering and crystallization processes are independent. The sintered calcium phosphate glass ceramic which contained bioactive beta-Ca-3(PO4)(2) and beta-Ca2P2O7 phases was successfully prepared. It was determined that during crystallization the primary phase in the precipitate was beta-Ca(PO3)(2). Other phases appearing in the resulting glass-ceramic were: alpha-Ca2P2O7, gamma-Ca2PO7, Ca4P6O19 and CaHPO4(H2O)(2). Crystalline phases containing Sr and Ti were not detected. SEM analysis of the glass-ceramic microstructure revealed surface crystallization of glass particles and plate-like morphology of crystal growth. The result of the in vitro bioactivity showed that no apatite layer was formed on the surface of the as-prepared glass-ceramic samples after immersion in the simulated body fluid (SBF).",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "Bioactive glass-ceramics prepared by powder sintering and crystallization of polyphosphate glass containing strontium",
pages = "12069-12061",
number = "15",
volume = "43",
doi = "10.1016/j.ceramint.2017.06.061"
}

Topalović, V. S., Grujić, S., Živanović, V. D., Matijašević, S. D., Nikolić, J. D., Stojanović, J.,& Smiljanić, S.. (2017). Bioactive glass-ceramics prepared by powder sintering and crystallization of polyphosphate glass containing strontium. in Ceramics International
Elsevier Sci Ltd, Oxford., 43(15), 12061-12069.
https://doi.org/10.1016/j.ceramint.2017.06.061

Topalović VS, Grujić S, Živanović VD, Matijašević SD, Nikolić JD, Stojanović J, Smiljanić S. Bioactive glass-ceramics prepared by powder sintering and crystallization of polyphosphate glass containing strontium. in Ceramics International. 2017;43(15):12061-12069.
doi:10.1016/j.ceramint.2017.06.061 .

Topalović, Vladimir S., Grujić, Snežana, Živanović, Vladimir D., Matijašević, Srđan D., Nikolić, Jelena D., Stojanović, Jovica, Smiljanić, Sonja, "Bioactive glass-ceramics prepared by powder sintering and crystallization of polyphosphate glass containing strontium" in Ceramics International, 43, no. 15 (2017):12061-12069,
https://doi.org/10.1016/j.ceramint.2017.06.061 . .

TY  - JOUR
AU  - Nikolić, Jelena D.
AU  - Tošić, Mihajlo B.
AU  - Grujić, Snežana
AU  - Živanović, Vladimir D.
AU  - Đošić, Marija
AU  - Matijašević, Srđan D.
AU  - Smiljanić, Sonja
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3708
AB  - In this work, the dissolution behavior of a polyphosphate glass, with the composition 45P(2)O(5) center dot 3SiO(2) center dot 25K(2)O center dot 15CaO center dot 10MgO center dot ZnO center dot MnO (mol %), in simulated body fluid (SBF) at a temperature of 37 degrees C for different times was studied. Two powder sizes of the glass (granulation: 0.1-0.3 and 0.3-0.65 mm) and the bulk glass were investigated. The dissolution experiments were conducted under stationary conditions. Changes in the normalized mass release, normalized concentration of ions, pH values, and surface morphology were determined as a function of the dissolution time. The initial rates of glass powder dissolution and leaching of ions, as well as the diffusion coefficient of cations and the releasing rate of ions, during the hydrolysis process of glass were determined. It was shown that the investigated phosphate glass dissolves in SBF incongruently, with neither precipitation nor the formation of newly potentially toxic compounds, in a dissolution period 720 h.
PB  - Srpsko hemijsko društvo, Beograd
T2  - Journal of the Serbian Chemical Society
T1  - Dissolution behavior of a polyphosphate glass in simulated body fluid
EP  - 342
IS  - 3
SP  - 329
VL  - 82
DO  - 10.2298/JSC161031009N
ER  - 

@article{
author = "Nikolić, Jelena D. and Tošić, Mihajlo B. and Grujić, Snežana and Živanović, Vladimir D. and Đošić, Marija and Matijašević, Srđan D. and Smiljanić, Sonja",
year = "2017",
abstract = "In this work, the dissolution behavior of a polyphosphate glass, with the composition 45P(2)O(5) center dot 3SiO(2) center dot 25K(2)O center dot 15CaO center dot 10MgO center dot ZnO center dot MnO (mol %), in simulated body fluid (SBF) at a temperature of 37 degrees C for different times was studied. Two powder sizes of the glass (granulation: 0.1-0.3 and 0.3-0.65 mm) and the bulk glass were investigated. The dissolution experiments were conducted under stationary conditions. Changes in the normalized mass release, normalized concentration of ions, pH values, and surface morphology were determined as a function of the dissolution time. The initial rates of glass powder dissolution and leaching of ions, as well as the diffusion coefficient of cations and the releasing rate of ions, during the hydrolysis process of glass were determined. It was shown that the investigated phosphate glass dissolves in SBF incongruently, with neither precipitation nor the formation of newly potentially toxic compounds, in a dissolution period 720 h.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "Journal of the Serbian Chemical Society",
title = "Dissolution behavior of a polyphosphate glass in simulated body fluid",
pages = "342-329",
number = "3",
volume = "82",
doi = "10.2298/JSC161031009N"
}

Nikolić, J. D., Tošić, M. B., Grujić, S., Živanović, V. D., Đošić, M., Matijašević, S. D.,& Smiljanić, S.. (2017). Dissolution behavior of a polyphosphate glass in simulated body fluid. in Journal of the Serbian Chemical Society
Srpsko hemijsko društvo, Beograd., 82(3), 329-342.
https://doi.org/10.2298/JSC161031009N

Nikolić JD, Tošić MB, Grujić S, Živanović VD, Đošić M, Matijašević SD, Smiljanić S. Dissolution behavior of a polyphosphate glass in simulated body fluid. in Journal of the Serbian Chemical Society. 2017;82(3):329-342.
doi:10.2298/JSC161031009N .

Nikolić, Jelena D., Tošić, Mihajlo B., Grujić, Snežana, Živanović, Vladimir D., Đošić, Marija, Matijašević, Srđan D., Smiljanić, Sonja, "Dissolution behavior of a polyphosphate glass in simulated body fluid" in Journal of the Serbian Chemical Society, 82, no. 3 (2017):329-342,
https://doi.org/10.2298/JSC161031009N . .

TY  - JOUR
AU  - Nikolić, Jelena D.
AU  - Živanović, Vladimir D.
AU  - Matijašević, Srđan D.
AU  - Stojanović, Jovica
AU  - Grujić, Snežana
AU  - Smiljanić, Sonja
AU  - Topalović, Vladimir S.
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3398
AB  - The crystallization and sintering behaviors of polyphosphate glass doped with trace elements Zn and Mn were examined. The heating experiments on bulk and powder glass samples were performed. The parent glass revealed low crystallization ability and the glass crystallization carried out under simultaneous acting of the surface and volume mechanisms. The bulk glass sample isothermally heated at T
PB  - Springer, Dordrecht
T2  - Journal of Thermal Analysis and Calorimetry
T1  - Crystallization and sintering behaviors of the polyphosphate glass doped with Zn and Mn
EP  - 592
IS  - 2
SP  - 585
VL  - 124
DO  - 10.1007/s10973-015-5184-x
ER  - 

@article{
author = "Nikolić, Jelena D. and Živanović, Vladimir D. and Matijašević, Srđan D. and Stojanović, Jovica and Grujić, Snežana and Smiljanić, Sonja and Topalović, Vladimir S.",
year = "2016",
abstract = "The crystallization and sintering behaviors of polyphosphate glass doped with trace elements Zn and Mn were examined. The heating experiments on bulk and powder glass samples were performed. The parent glass revealed low crystallization ability and the glass crystallization carried out under simultaneous acting of the surface and volume mechanisms. The bulk glass sample isothermally heated at T",
publisher = "Springer, Dordrecht",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "Crystallization and sintering behaviors of the polyphosphate glass doped with Zn and Mn",
pages = "592-585",
number = "2",
volume = "124",
doi = "10.1007/s10973-015-5184-x"
}

Nikolić, J. D., Živanović, V. D., Matijašević, S. D., Stojanović, J., Grujić, S., Smiljanić, S.,& Topalović, V. S.. (2016). Crystallization and sintering behaviors of the polyphosphate glass doped with Zn and Mn. in Journal of Thermal Analysis and Calorimetry
Springer, Dordrecht., 124(2), 585-592.
https://doi.org/10.1007/s10973-015-5184-x

Nikolić JD, Živanović VD, Matijašević SD, Stojanović J, Grujić S, Smiljanić S, Topalović VS. Crystallization and sintering behaviors of the polyphosphate glass doped with Zn and Mn. in Journal of Thermal Analysis and Calorimetry. 2016;124(2):585-592.
doi:10.1007/s10973-015-5184-x .

Nikolić, Jelena D., Živanović, Vladimir D., Matijašević, Srđan D., Stojanović, Jovica, Grujić, Snežana, Smiljanić, Sonja, Topalović, Vladimir S., "Crystallization and sintering behaviors of the polyphosphate glass doped with Zn and Mn" in Journal of Thermal Analysis and Calorimetry, 124, no. 2 (2016):585-592,
https://doi.org/10.1007/s10973-015-5184-x . .

TY  - JOUR
AU  - Smiljanić, Sonja
AU  - Grujić, Snežana
AU  - Tošić, Mihajlo B.
AU  - Živanović, Vladimir D.
AU  - Matijašević, Srđan D.
AU  - Nikolić, Jelena D.
AU  - Topalović, Vladimir S.
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3451
AB  - The selected lanthanum-strontium borate glasses were prepared by a conventional melt-quenching technique. The compositions of the investigated glasses were chosen to be: 5.7, 9.5, 14.3, 19.1 mol% for La2O3, 22.9, 19.1, 14.3, 9.5 mol% for SrO and 71.4 mol% for B2O3. The density, molar volume, oxygen molar volume, oxygen packing density, oxygen/boron ratios and structural transformations in the glass network were investigated according to the substitution of SrO by La2O3. The density and the molar volume increased in parallel with La2O3 content increase. Simultaneously, oxygen molar volume values increased while the oxygen packing density values decreased. A hot stage microscope (HSM) and a differential thermal analysis (DTA) were used to determine the characteristic temperatures. By increasing the content of lanthanum, the glass transition temperatures, changed with the same trend as the molar volume. Glass stability parameters were calculated from the temperatures obtained by DTA and HSM. The HSM results were used to obtain the viscosity curves by applying the Vogel-Fulcher-Tamman (VFT) equation.
PB  - Savez hemijskih inženjera, Beograd
T2  - Chemical Industry & Chemical Engineering Quarterly
T1  - Effect of la2o3 on the structure and the properties of strontium borate glasses
EP  - 115
IS  - 1
SP  - 111
VL  - 22
DO  - 10.2298/CICEQ150213031S
ER  - 

@article{
author = "Smiljanić, Sonja and Grujić, Snežana and Tošić, Mihajlo B. and Živanović, Vladimir D. and Matijašević, Srđan D. and Nikolić, Jelena D. and Topalović, Vladimir S.",
year = "2016",
abstract = "The selected lanthanum-strontium borate glasses were prepared by a conventional melt-quenching technique. The compositions of the investigated glasses were chosen to be: 5.7, 9.5, 14.3, 19.1 mol% for La2O3, 22.9, 19.1, 14.3, 9.5 mol% for SrO and 71.4 mol% for B2O3. The density, molar volume, oxygen molar volume, oxygen packing density, oxygen/boron ratios and structural transformations in the glass network were investigated according to the substitution of SrO by La2O3. The density and the molar volume increased in parallel with La2O3 content increase. Simultaneously, oxygen molar volume values increased while the oxygen packing density values decreased. A hot stage microscope (HSM) and a differential thermal analysis (DTA) were used to determine the characteristic temperatures. By increasing the content of lanthanum, the glass transition temperatures, changed with the same trend as the molar volume. Glass stability parameters were calculated from the temperatures obtained by DTA and HSM. The HSM results were used to obtain the viscosity curves by applying the Vogel-Fulcher-Tamman (VFT) equation.",
publisher = "Savez hemijskih inženjera, Beograd",
journal = "Chemical Industry & Chemical Engineering Quarterly",
title = "Effect of la2o3 on the structure and the properties of strontium borate glasses",
pages = "115-111",
number = "1",
volume = "22",
doi = "10.2298/CICEQ150213031S"
}

Smiljanić, S., Grujić, S., Tošić, M. B., Živanović, V. D., Matijašević, S. D., Nikolić, J. D.,& Topalović, V. S.. (2016). Effect of la2o3 on the structure and the properties of strontium borate glasses. in Chemical Industry & Chemical Engineering Quarterly
Savez hemijskih inženjera, Beograd., 22(1), 111-115.
https://doi.org/10.2298/CICEQ150213031S

Smiljanić S, Grujić S, Tošić MB, Živanović VD, Matijašević SD, Nikolić JD, Topalović VS. Effect of la2o3 on the structure and the properties of strontium borate glasses. in Chemical Industry & Chemical Engineering Quarterly. 2016;22(1):111-115.
doi:10.2298/CICEQ150213031S .

Smiljanić, Sonja, Grujić, Snežana, Tošić, Mihajlo B., Živanović, Vladimir D., Matijašević, Srđan D., Nikolić, Jelena D., Topalović, Vladimir S., "Effect of la2o3 on the structure and the properties of strontium borate glasses" in Chemical Industry & Chemical Engineering Quarterly, 22, no. 1 (2016):111-115,
https://doi.org/10.2298/CICEQ150213031S . .

TY  - JOUR
AU  - Živanović, Vladimir D.
AU  - Tošić, Mihajlo B.
AU  - Grujić, Snežana
AU  - Matijašević, Srđan D.
AU  - Stojanović, Jovica
AU  - Nikolić, J. D.
AU  - Smiljanić, Sonja
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3034
AB  - In this study, the crystallization of 30Li(2)O center dot 15Nb(2)O(5)center dot 50SiO(2)center dot 5TiO(2) (mol%) glass was examined. The parent glass was prepared by the standard melt quenching method, and the investigations were performed under non-isothermal and isothermal conditions using the DTA, XRD, SEM and EDS methods. The results revealed primary crystallization of this glass and the dendritic morphology of crystal growth. Three crystalline phases were formed in the glass matrix during crystallization, whereby LiNbO3 was formed as the primary phase, followed by Li2Si2O5 and SiO2 as the secondary. The surface and volume mechanisms of crystallization occur. The condition that both the mechanisms were dominant was determined. In the case of volume crystallization, the characteristics of the nucleation process were examined. The kinetic parameters of crystallization under different mechanisms of crystallization were determined.
PB  - Springer, Dordrecht
T2  - Journal of Thermal Analysis and Calorimetry
T1  - DTA study of the crystallization of Li2O-Nb2O5-SiO2-TiO2 glass
EP  - 1661
IS  - 3
SP  - 1653
VL  - 119
DO  - 10.1007/s10973-015-4390-x
ER  - 

@article{
author = "Živanović, Vladimir D. and Tošić, Mihajlo B. and Grujić, Snežana and Matijašević, Srđan D. and Stojanović, Jovica and Nikolić, J. D. and Smiljanić, Sonja",
year = "2015",
abstract = "In this study, the crystallization of 30Li(2)O center dot 15Nb(2)O(5)center dot 50SiO(2)center dot 5TiO(2) (mol%) glass was examined. The parent glass was prepared by the standard melt quenching method, and the investigations were performed under non-isothermal and isothermal conditions using the DTA, XRD, SEM and EDS methods. The results revealed primary crystallization of this glass and the dendritic morphology of crystal growth. Three crystalline phases were formed in the glass matrix during crystallization, whereby LiNbO3 was formed as the primary phase, followed by Li2Si2O5 and SiO2 as the secondary. The surface and volume mechanisms of crystallization occur. The condition that both the mechanisms were dominant was determined. In the case of volume crystallization, the characteristics of the nucleation process were examined. The kinetic parameters of crystallization under different mechanisms of crystallization were determined.",
publisher = "Springer, Dordrecht",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "DTA study of the crystallization of Li2O-Nb2O5-SiO2-TiO2 glass",
pages = "1661-1653",
number = "3",
volume = "119",
doi = "10.1007/s10973-015-4390-x"
}

Živanović, V. D., Tošić, M. B., Grujić, S., Matijašević, S. D., Stojanović, J., Nikolić, J. D.,& Smiljanić, S.. (2015). DTA study of the crystallization of Li2O-Nb2O5-SiO2-TiO2 glass. in Journal of Thermal Analysis and Calorimetry
Springer, Dordrecht., 119(3), 1653-1661.
https://doi.org/10.1007/s10973-015-4390-x

Živanović VD, Tošić MB, Grujić S, Matijašević SD, Stojanović J, Nikolić JD, Smiljanić S. DTA study of the crystallization of Li2O-Nb2O5-SiO2-TiO2 glass. in Journal of Thermal Analysis and Calorimetry. 2015;119(3):1653-1661.
doi:10.1007/s10973-015-4390-x .

Živanović, Vladimir D., Tošić, Mihajlo B., Grujić, Snežana, Matijašević, Srđan D., Stojanović, Jovica, Nikolić, J. D., Smiljanić, Sonja, "DTA study of the crystallization of Li2O-Nb2O5-SiO2-TiO2 glass" in Journal of Thermal Analysis and Calorimetry, 119, no. 3 (2015):1653-1661,
https://doi.org/10.1007/s10973-015-4390-x . .

TY  - JOUR
AU  - Đošić, Marija
AU  - Mitrić, Miodrag
AU  - Mišković-Stanković, Vesna
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3010
AB  - Calcium phosphate coatings were electrochemically deposited on titanium from an aqueous solution of Ca(NO3)(2) and NH4H2PO4 at a current density of 10 mA cm(-2) for a deposition time of 15 mm. The obtained brushite coatings (CaHPO4 center dot 2H(2)O), were converted to hydroxyapatite (HA) by soaking in simulated body fluid (SBF) for 2, 7 and 14 days. The brushite and hydroxyapatite coatings were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and atomic force microscopy (AFM). It was shown that increasing the soaking time increased the porosity, roughness and crystallite domain size of the HA coatings and decreased the unit cell parameters and unit cell volume, while the mean pore area of HA was unaffected. The calcium and phosphorus ions concentrations in SBF were determined by atomic absorption spectroscopy (AAS) and UV-Vis spectroscopy, respectively, and a mechanism of HA growth based on dissolution-precipitation was proposed.
PB  - Srpsko hemijsko društvo, Beograd
T2  - Journal of the Serbian Chemical Society
T1  - The porosity and roughness of electrodeposited calcium phosphate coatings in simulated body fluid
EP  - 251
IS  - 2
SP  - 237
VL  - 80
DO  - 10.2298/JSC140626098D
ER  - 

@article{
author = "Đošić, Marija and Mitrić, Miodrag and Mišković-Stanković, Vesna",
year = "2015",
abstract = "Calcium phosphate coatings were electrochemically deposited on titanium from an aqueous solution of Ca(NO3)(2) and NH4H2PO4 at a current density of 10 mA cm(-2) for a deposition time of 15 mm. The obtained brushite coatings (CaHPO4 center dot 2H(2)O), were converted to hydroxyapatite (HA) by soaking in simulated body fluid (SBF) for 2, 7 and 14 days. The brushite and hydroxyapatite coatings were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and atomic force microscopy (AFM). It was shown that increasing the soaking time increased the porosity, roughness and crystallite domain size of the HA coatings and decreased the unit cell parameters and unit cell volume, while the mean pore area of HA was unaffected. The calcium and phosphorus ions concentrations in SBF were determined by atomic absorption spectroscopy (AAS) and UV-Vis spectroscopy, respectively, and a mechanism of HA growth based on dissolution-precipitation was proposed.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "Journal of the Serbian Chemical Society",
title = "The porosity and roughness of electrodeposited calcium phosphate coatings in simulated body fluid",
pages = "251-237",
number = "2",
volume = "80",
doi = "10.2298/JSC140626098D"
}

Đošić, M., Mitrić, M.,& Mišković-Stanković, V.. (2015). The porosity and roughness of electrodeposited calcium phosphate coatings in simulated body fluid. in Journal of the Serbian Chemical Society
Srpsko hemijsko društvo, Beograd., 80(2), 237-251.
https://doi.org/10.2298/JSC140626098D

Đošić M, Mitrić M, Mišković-Stanković V. The porosity and roughness of electrodeposited calcium phosphate coatings in simulated body fluid. in Journal of the Serbian Chemical Society. 2015;80(2):237-251.
doi:10.2298/JSC140626098D .

Đošić, Marija, Mitrić, Miodrag, Mišković-Stanković, Vesna, "The porosity and roughness of electrodeposited calcium phosphate coatings in simulated body fluid" in Journal of the Serbian Chemical Society, 80, no. 2 (2015):237-251,
https://doi.org/10.2298/JSC140626098D . .

TY  - JOUR
AU  - Prstić, Aurel
AU  - Acimović-Pavlović, Zagorka
AU  - Terzić, Anja
AU  - Pavlović, Ljubica
AU  - Grujić, Snežana
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2769
AB  - In this study, new refractory coatings based on synthesized cordierite for the casting applications were developed. The investigation included starting raw materials characterization, synthesis of the cordierite, design of the refractory coating as final product, and its application testing. The obtained results pointed out that coating suspension sediment stability was crucial quality parameter. Design and optimization of the coatings composition, with controlled rheological properties included, were achieved by application of different coating components, namely different suspension agents and by alteration of the coating production procedure. Cordierite, used as filler, was obtained by means of synthesis in the solid-state reaction on the basis of talc, kaolin, and alumina. The investigation showed that the application of these particular types of water/alcohol-based coatings has positive influence on surface quality and structural and mechanical properties of the castings of aluminum alloys obtained by casting into sand molds by means of evaporable models method, that is, evaporate pattern casting process.
PB  - Wiley, Hoboken
T2  - International Journal of Applied Ceramic Technology
T1  - Development of New Cordierite-Based Refractory Coatings for Casting Applications
EP  - 331
IS  - 2
SP  - 321
VL  - 11
DO  - 10.1111/ijac.12010
ER  - 

@article{
author = "Prstić, Aurel and Acimović-Pavlović, Zagorka and Terzić, Anja and Pavlović, Ljubica and Grujić, Snežana",
year = "2014",
abstract = "In this study, new refractory coatings based on synthesized cordierite for the casting applications were developed. The investigation included starting raw materials characterization, synthesis of the cordierite, design of the refractory coating as final product, and its application testing. The obtained results pointed out that coating suspension sediment stability was crucial quality parameter. Design and optimization of the coatings composition, with controlled rheological properties included, were achieved by application of different coating components, namely different suspension agents and by alteration of the coating production procedure. Cordierite, used as filler, was obtained by means of synthesis in the solid-state reaction on the basis of talc, kaolin, and alumina. The investigation showed that the application of these particular types of water/alcohol-based coatings has positive influence on surface quality and structural and mechanical properties of the castings of aluminum alloys obtained by casting into sand molds by means of evaporable models method, that is, evaporate pattern casting process.",
publisher = "Wiley, Hoboken",
journal = "International Journal of Applied Ceramic Technology",
title = "Development of New Cordierite-Based Refractory Coatings for Casting Applications",
pages = "331-321",
number = "2",
volume = "11",
doi = "10.1111/ijac.12010"
}

Prstić, A., Acimović-Pavlović, Z., Terzić, A., Pavlović, L.,& Grujić, S.. (2014). Development of New Cordierite-Based Refractory Coatings for Casting Applications. in International Journal of Applied Ceramic Technology
Wiley, Hoboken., 11(2), 321-331.
https://doi.org/10.1111/ijac.12010

Prstić A, Acimović-Pavlović Z, Terzić A, Pavlović L, Grujić S. Development of New Cordierite-Based Refractory Coatings for Casting Applications. in International Journal of Applied Ceramic Technology. 2014;11(2):321-331.
doi:10.1111/ijac.12010 .

Prstić, Aurel, Acimović-Pavlović, Zagorka, Terzić, Anja, Pavlović, Ljubica, Grujić, Snežana, "Development of New Cordierite-Based Refractory Coatings for Casting Applications" in International Journal of Applied Ceramic Technology, 11, no. 2 (2014):321-331,
https://doi.org/10.1111/ijac.12010 . .

TY  - JOUR
AU  - Smiljanić, Sonja
AU  - Grujić, Snežana
AU  - Tošić, Mihajlo B.
AU  - Živanović, Vladimir D.
AU  - Stojanović, Jovica
AU  - Matijašević, Srđan D.
AU  - Nikolić, Jelena D.
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2800
AB  - Glasses with a constant B2O3 and an increasing La2O3 content in the system La2O3-SrO-B2O3 were obtained by the usual melt quenching procedure. The crystallization and sinterability of the glasses were investigated by hot stage microscopy (HSM), differential thermal analysis (DTA), X-ray diffraction (XRD) analysis, transmission electron microscopy (TEM) and scanning electron microscopy (SEM). XRD analysis of the bulk samples evidenced the formation of the crystalline phases: La2SrB10O19, SrB6O10 and SrLaBO4. XRD and TEM/SAED analyses showed a polymorphic crystallization of the glass sample containing 14.3 mol% La2O3 with precipitation of the La2SrB10O19 phase. SEM analysis confirmed the surface crystallization mechanism of this sample. The kinetics of crystallization of the same sample was examined by DTA and the activation energy of crystal growth was calculated by the Kissinger model to be E-a=458 +/- 63 kJ mol(-1).
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - Crystallization and sinterability of glass-ceramics in the system La2O3-SrO-B2O3
EP  - 305
IS  - 1
SP  - 297
VL  - 40
DO  - 10.1016/j.ceramint.2013.06.002
ER  - 

@article{
author = "Smiljanić, Sonja and Grujić, Snežana and Tošić, Mihajlo B. and Živanović, Vladimir D. and Stojanović, Jovica and Matijašević, Srđan D. and Nikolić, Jelena D.",
year = "2014",
abstract = "Glasses with a constant B2O3 and an increasing La2O3 content in the system La2O3-SrO-B2O3 were obtained by the usual melt quenching procedure. The crystallization and sinterability of the glasses were investigated by hot stage microscopy (HSM), differential thermal analysis (DTA), X-ray diffraction (XRD) analysis, transmission electron microscopy (TEM) and scanning electron microscopy (SEM). XRD analysis of the bulk samples evidenced the formation of the crystalline phases: La2SrB10O19, SrB6O10 and SrLaBO4. XRD and TEM/SAED analyses showed a polymorphic crystallization of the glass sample containing 14.3 mol% La2O3 with precipitation of the La2SrB10O19 phase. SEM analysis confirmed the surface crystallization mechanism of this sample. The kinetics of crystallization of the same sample was examined by DTA and the activation energy of crystal growth was calculated by the Kissinger model to be E-a=458 +/- 63 kJ mol(-1).",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "Crystallization and sinterability of glass-ceramics in the system La2O3-SrO-B2O3",
pages = "305-297",
number = "1",
volume = "40",
doi = "10.1016/j.ceramint.2013.06.002"
}

Smiljanić, S., Grujić, S., Tošić, M. B., Živanović, V. D., Stojanović, J., Matijašević, S. D.,& Nikolić, J. D.. (2014). Crystallization and sinterability of glass-ceramics in the system La2O3-SrO-B2O3. in Ceramics International
Elsevier Sci Ltd, Oxford., 40(1), 297-305.
https://doi.org/10.1016/j.ceramint.2013.06.002

Smiljanić S, Grujić S, Tošić MB, Živanović VD, Stojanović J, Matijašević SD, Nikolić JD. Crystallization and sinterability of glass-ceramics in the system La2O3-SrO-B2O3. in Ceramics International. 2014;40(1):297-305.
doi:10.1016/j.ceramint.2013.06.002 .

Smiljanić, Sonja, Grujić, Snežana, Tošić, Mihajlo B., Živanović, Vladimir D., Stojanović, Jovica, Matijašević, Srđan D., Nikolić, Jelena D., "Crystallization and sinterability of glass-ceramics in the system La2O3-SrO-B2O3" in Ceramics International, 40, no. 1 (2014):297-305,
https://doi.org/10.1016/j.ceramint.2013.06.002 . .

TY  - JOUR
AU  - Nikolić, Jelena D.
AU  - Smiljanić, Sonja
AU  - Matijašević, Srđan D.
AU  - Živanović, Vladimir D.
AU  - Tošić, Mihajlo B.
AU  - Grujić, Snežana
AU  - Stojanović, Jovica
PY  - 2013
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2333
AB  - The results of preparation and structural characterization of glass-ceramics from the system Li2O-Al2O3-GeO2-P2O5 are shown in this paper. The crystallization behaviour of the selected glass was examined under non-isothermal and isothermal crystallization conditions. DTA, XRD and SEM methods were employed for analyses. It was confirmed that this glass crystallizes by the volume crystallization mechanism. The results also showed that the glass crystallize by primary crystallization. As a primary phase the LiGe2(PO4)3 is formed and the traces of GeO2 as a secondary one is present. The crystallization process occurred at a high homogeneous nucleation rate and the spherical morphology of crystal growth. By applying the Kissinger relation the activation energy of crystal growth Ea = 462 kJ/mol was determined.
PB  - University of Novi Sad
T2  - Processing and Application of Ceramics
T1  - Preparation of glass-ceramic in Li2O-Al2O3-GeO2-P2O5 system
EP  - 151
IS  - 4
SP  - 147
VL  - 7
UR  - https://hdl.handle.net/21.15107/rcub_technorep_2333
ER  - 

@article{
author = "Nikolić, Jelena D. and Smiljanić, Sonja and Matijašević, Srđan D. and Živanović, Vladimir D. and Tošić, Mihajlo B. and Grujić, Snežana and Stojanović, Jovica",
year = "2013",
abstract = "The results of preparation and structural characterization of glass-ceramics from the system Li2O-Al2O3-GeO2-P2O5 are shown in this paper. The crystallization behaviour of the selected glass was examined under non-isothermal and isothermal crystallization conditions. DTA, XRD and SEM methods were employed for analyses. It was confirmed that this glass crystallizes by the volume crystallization mechanism. The results also showed that the glass crystallize by primary crystallization. As a primary phase the LiGe2(PO4)3 is formed and the traces of GeO2 as a secondary one is present. The crystallization process occurred at a high homogeneous nucleation rate and the spherical morphology of crystal growth. By applying the Kissinger relation the activation energy of crystal growth Ea = 462 kJ/mol was determined.",
publisher = "University of Novi Sad",
journal = "Processing and Application of Ceramics",
title = "Preparation of glass-ceramic in Li2O-Al2O3-GeO2-P2O5 system",
pages = "151-147",
number = "4",
volume = "7",
url = "https://hdl.handle.net/21.15107/rcub_technorep_2333"
}

Nikolić, J. D., Smiljanić, S., Matijašević, S. D., Živanović, V. D., Tošić, M. B., Grujić, S.,& Stojanović, J.. (2013). Preparation of glass-ceramic in Li2O-Al2O3-GeO2-P2O5 system. in Processing and Application of Ceramics
University of Novi Sad., 7(4), 147-151.
https://hdl.handle.net/21.15107/rcub_technorep_2333

Nikolić JD, Smiljanić S, Matijašević SD, Živanović VD, Tošić MB, Grujić S, Stojanović J. Preparation of glass-ceramic in Li2O-Al2O3-GeO2-P2O5 system. in Processing and Application of Ceramics. 2013;7(4):147-151.
https://hdl.handle.net/21.15107/rcub_technorep_2333 .

Nikolić, Jelena D., Smiljanić, Sonja, Matijašević, Srđan D., Živanović, Vladimir D., Tošić, Mihajlo B., Grujić, Snežana, Stojanović, Jovica, "Preparation of glass-ceramic in Li2O-Al2O3-GeO2-P2O5 system" in Processing and Application of Ceramics, 7, no. 4 (2013):147-151,
https://hdl.handle.net/21.15107/rcub_technorep_2333 .

TY  - JOUR
AU  - Tošić, Mihajlo B.
AU  - Nikolić, J. D.
AU  - Grujić, Snežana
AU  - Živanović, Vladimir D.
AU  - Zildžović, Snežana
AU  - Matijašević, Srđan D.
AU  - Ždrale, Sonja V.
PY  - 2013
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2540
AB  - The dissolution behavior of a polyphosphate glass with a molar ratio [M2O + MO]/P2O5 gt 1 in distilled water under static condition was studied. The leaching tests were performed with glass powder samples (0.1-0.65 mm) at T=15-50 degrees C for times up to 720 h. The mass loss of the samples, the changes of pH and the concentration of elements (P, K, Ca, Mg, Zn and Mn) in solution were determined. The effects of temperature, time and particle size were analyzed. The results of the tests showed a complex dissolution behavior of this glass. The selective dissolution of the glass components was determined. The mechanism of formation and the structure of dissolved glass layer were investigated. The effects of cations on the mechanisms and kinetics of dissolution of the polyphosphate glass are presented. The activation energy of dissolution, Ea, was determined to be 39 +/- 5 kJ/mol.
PB  - Elsevier, Amsterdam
T2  - Journal of Non-Crystalline Solids
T1  - Dissolution behavior of a polyphosphate glass into an aqueous solution under static leaching conditions
EP  - 194
SP  - 185
VL  - 362
DO  - 10.1016/j.jnoncrysol.2012.11.024
ER  - 

@article{
author = "Tošić, Mihajlo B. and Nikolić, J. D. and Grujić, Snežana and Živanović, Vladimir D. and Zildžović, Snežana and Matijašević, Srđan D. and Ždrale, Sonja V.",
year = "2013",
abstract = "The dissolution behavior of a polyphosphate glass with a molar ratio [M2O + MO]/P2O5 gt 1 in distilled water under static condition was studied. The leaching tests were performed with glass powder samples (0.1-0.65 mm) at T=15-50 degrees C for times up to 720 h. The mass loss of the samples, the changes of pH and the concentration of elements (P, K, Ca, Mg, Zn and Mn) in solution were determined. The effects of temperature, time and particle size were analyzed. The results of the tests showed a complex dissolution behavior of this glass. The selective dissolution of the glass components was determined. The mechanism of formation and the structure of dissolved glass layer were investigated. The effects of cations on the mechanisms and kinetics of dissolution of the polyphosphate glass are presented. The activation energy of dissolution, Ea, was determined to be 39 +/- 5 kJ/mol.",
publisher = "Elsevier, Amsterdam",
journal = "Journal of Non-Crystalline Solids",
title = "Dissolution behavior of a polyphosphate glass into an aqueous solution under static leaching conditions",
pages = "194-185",
volume = "362",
doi = "10.1016/j.jnoncrysol.2012.11.024"
}

Tošić, M. B., Nikolić, J. D., Grujić, S., Živanović, V. D., Zildžović, S., Matijašević, S. D.,& Ždrale, S. V.. (2013). Dissolution behavior of a polyphosphate glass into an aqueous solution under static leaching conditions. in Journal of Non-Crystalline Solids
Elsevier, Amsterdam., 362, 185-194.
https://doi.org/10.1016/j.jnoncrysol.2012.11.024

Tošić MB, Nikolić JD, Grujić S, Živanović VD, Zildžović S, Matijašević SD, Ždrale SV. Dissolution behavior of a polyphosphate glass into an aqueous solution under static leaching conditions. in Journal of Non-Crystalline Solids. 2013;362:185-194.
doi:10.1016/j.jnoncrysol.2012.11.024 .

Tošić, Mihajlo B., Nikolić, J. D., Grujić, Snežana, Živanović, Vladimir D., Zildžović, Snežana, Matijašević, Srđan D., Ždrale, Sonja V., "Dissolution behavior of a polyphosphate glass into an aqueous solution under static leaching conditions" in Journal of Non-Crystalline Solids, 362 (2013):185-194,
https://doi.org/10.1016/j.jnoncrysol.2012.11.024 . .

TY  - JOUR
AU  - Matijašević, Srđan D.
AU  - Tošić, Mihajlo B.
AU  - Stojanović, Jovica
AU  - Grujić, Snežana
AU  - Živanović, Vladimir D.
AU  - Nikolić, Jelena D.
AU  - Đošić, Marija
PY  - 2012
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1981
AB  - Potassium germanate glass with molar ratio [GeO2]/[K2O] = 1.2 and Nb2O5 content of 34 mol% have been synthesized by a melt-quenching method. The crystallization behavior under non-isothermal and isothermal crystallization conditions was investigated. The results showed that this glass exposed complex primary crystallization. In the temperature range  lt  800 degrees C primary phase is K3.8Nb5Ge3O20.4, while K6Nb6Ge4O26 appeared as primary phase at temperatures  gt  800 degrees C. K10Nb22Ge4O68 and metastable KNbO3 and K4Nb6O17 were formed as secondary phases. The crystallization commenced at T  gt  640 degrees C with high homogeneous nucleation rate and spherulite crystal growth morphology. DTA curves recorded for powder samples particle size  lt  0.1 mm revealed three exothermic peaks and three endothermic peaks within temperature range of T = 640-940 degrees C, while the DTA curves recorded for powder samples particle size  gt  0.1 mm showed two exothermic peaks and two endothermic peaks within temperature range of T = 640-1020 degrees C. The analysis of the dominant crystallization mechanism of powder glass sample and kinetics of crystallization is presented.
PB  - University of Chemistry and Technology, Prague
T2  - Ceramics - Silikaty
T1  - The crystallization of potassium germanate glass with high content of niobium oxide
EP  - 68
IS  - 1
SP  - 61
VL  - 56
UR  - https://hdl.handle.net/21.15107/rcub_technorep_1981
ER  - 

@article{
author = "Matijašević, Srđan D. and Tošić, Mihajlo B. and Stojanović, Jovica and Grujić, Snežana and Živanović, Vladimir D. and Nikolić, Jelena D. and Đošić, Marija",
year = "2012",
abstract = "Potassium germanate glass with molar ratio [GeO2]/[K2O] = 1.2 and Nb2O5 content of 34 mol% have been synthesized by a melt-quenching method. The crystallization behavior under non-isothermal and isothermal crystallization conditions was investigated. The results showed that this glass exposed complex primary crystallization. In the temperature range  lt  800 degrees C primary phase is K3.8Nb5Ge3O20.4, while K6Nb6Ge4O26 appeared as primary phase at temperatures  gt  800 degrees C. K10Nb22Ge4O68 and metastable KNbO3 and K4Nb6O17 were formed as secondary phases. The crystallization commenced at T  gt  640 degrees C with high homogeneous nucleation rate and spherulite crystal growth morphology. DTA curves recorded for powder samples particle size  lt  0.1 mm revealed three exothermic peaks and three endothermic peaks within temperature range of T = 640-940 degrees C, while the DTA curves recorded for powder samples particle size  gt  0.1 mm showed two exothermic peaks and two endothermic peaks within temperature range of T = 640-1020 degrees C. The analysis of the dominant crystallization mechanism of powder glass sample and kinetics of crystallization is presented.",
publisher = "University of Chemistry and Technology, Prague",
journal = "Ceramics - Silikaty",
title = "The crystallization of potassium germanate glass with high content of niobium oxide",
pages = "68-61",
number = "1",
volume = "56",
url = "https://hdl.handle.net/21.15107/rcub_technorep_1981"
}

Matijašević, S. D., Tošić, M. B., Stojanović, J., Grujić, S., Živanović, V. D., Nikolić, J. D.,& Đošić, M.. (2012). The crystallization of potassium germanate glass with high content of niobium oxide. in Ceramics - Silikaty
University of Chemistry and Technology, Prague., 56(1), 61-68.
https://hdl.handle.net/21.15107/rcub_technorep_1981

Matijašević SD, Tošić MB, Stojanović J, Grujić S, Živanović VD, Nikolić JD, Đošić M. The crystallization of potassium germanate glass with high content of niobium oxide. in Ceramics - Silikaty. 2012;56(1):61-68.
https://hdl.handle.net/21.15107/rcub_technorep_1981 .

Matijašević, Srđan D., Tošić, Mihajlo B., Stojanović, Jovica, Grujić, Snežana, Živanović, Vladimir D., Nikolić, Jelena D., Đošić, Marija, "The crystallization of potassium germanate glass with high content of niobium oxide" in Ceramics - Silikaty, 56, no. 1 (2012):61-68,
https://hdl.handle.net/21.15107/rcub_technorep_1981 .

TY  - JOUR
AU  - Nikolić, Jelena
AU  - Tošić, Mihajlo B.
AU  - Živanović, Vladimir D.
AU  - Matijašević, Srđan D.
AU  - Zildžović, Snežana
AU  - Grujić, Snežana
AU  - Ždrale, Sonja V.
PY  - 2012
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2025
AB  - In this paper the new methods for reduction of NOx emission from glass melting furnaces were presented. The secondary measures are focused on development of different methods for elimination of nitrogen oxide from the smoke gasses. The main characteristics of the selective catalytic reduction process (SCR), selective non catalytic reduction process (SNCR) and 3R process were presented and some advantages and limitations of these processes were analyzed.
AB  - U ovom radu su prikazani novi postupci smanjenja emisije NOx iz peći za topljenje stakla. Zbog visokih temperatura do kojih se zagreva vazduh neophodan za sagorevanje dolazi do visoke emisije oksida NOx iz staklarskih peći. Sekundarne mere usmerene su na razvoj postupaka za uklanjanje azotnih oksida iz dimnih gasova. Dat je prikaz selektivno nekatalitičkog, selektivno katalitičkog redukcionog i 3R postupka kao i njihove prednosti i nedostaci.
PB  - Savez inženjera i tehničara Srbije, Beograd
T2  - Tehnika
T1  - Secondary measures for reduction of NOx emission in glass melting process
T1  - Sekundarni postupci smanjenja emisije oksida azota u procesu topljenja stakla
EP  - 556
IS  - 4
SP  - 553
VL  - 67
UR  - https://hdl.handle.net/21.15107/rcub_technorep_2025
ER  - 

@article{
author = "Nikolić, Jelena and Tošić, Mihajlo B. and Živanović, Vladimir D. and Matijašević, Srđan D. and Zildžović, Snežana and Grujić, Snežana and Ždrale, Sonja V.",
year = "2012",
abstract = "In this paper the new methods for reduction of NOx emission from glass melting furnaces were presented. The secondary measures are focused on development of different methods for elimination of nitrogen oxide from the smoke gasses. The main characteristics of the selective catalytic reduction process (SCR), selective non catalytic reduction process (SNCR) and 3R process were presented and some advantages and limitations of these processes were analyzed., U ovom radu su prikazani novi postupci smanjenja emisije NOx iz peći za topljenje stakla. Zbog visokih temperatura do kojih se zagreva vazduh neophodan za sagorevanje dolazi do visoke emisije oksida NOx iz staklarskih peći. Sekundarne mere usmerene su na razvoj postupaka za uklanjanje azotnih oksida iz dimnih gasova. Dat je prikaz selektivno nekatalitičkog, selektivno katalitičkog redukcionog i 3R postupka kao i njihove prednosti i nedostaci.",
publisher = "Savez inženjera i tehničara Srbije, Beograd",
journal = "Tehnika",
title = "Secondary measures for reduction of NOx emission in glass melting process, Sekundarni postupci smanjenja emisije oksida azota u procesu topljenja stakla",
pages = "556-553",
number = "4",
volume = "67",
url = "https://hdl.handle.net/21.15107/rcub_technorep_2025"
}

Nikolić, J., Tošić, M. B., Živanović, V. D., Matijašević, S. D., Zildžović, S., Grujić, S.,& Ždrale, S. V.. (2012). Secondary measures for reduction of NOx emission in glass melting process. in Tehnika
Savez inženjera i tehničara Srbije, Beograd., 67(4), 553-556.
https://hdl.handle.net/21.15107/rcub_technorep_2025

Nikolić J, Tošić MB, Živanović VD, Matijašević SD, Zildžović S, Grujić S, Ždrale SV. Secondary measures for reduction of NOx emission in glass melting process. in Tehnika. 2012;67(4):553-556.
https://hdl.handle.net/21.15107/rcub_technorep_2025 .

Nikolić, Jelena, Tošić, Mihajlo B., Živanović, Vladimir D., Matijašević, Srđan D., Zildžović, Snežana, Grujić, Snežana, Ždrale, Sonja V., "Secondary measures for reduction of NOx emission in glass melting process" in Tehnika, 67, no. 4 (2012):553-556,
https://hdl.handle.net/21.15107/rcub_technorep_2025 .

TY  - JOUR
AU  - Matijašević, Srđan D.
AU  - Tošić, Mihajlo B.
AU  - Grujić, Snežana
AU  - Stojanović, Jovica
AU  - Živanović, Vladimir D.
AU  - Nikolić, J. D.
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1832
AB  - The effect of K2O content on the crystallization of niobium germanate glasses with 22.7- 24.27 wt% of GeO2 and 54.59-57.48 wt% of Nb2O5 was examined. The glasses crystallize by primary crystallization and the formed crystalline phases were K6Nb6Ge4O26, K3.8Nb5Ge3O20.4 and KNbO3. Increasing the K2O content caused a decrease in the GeO2 content of the primary phases. The effect of the K2O content on the kinetics of primary crystallization was analyzed. It was demonstrated that an increase of the K2O content decreased the activation energy of crystal growth at first of the crystallization peaks (Ec1). At second crystallization peaks the activation energies of crystal growth increased (Ec2).
AB  - Ispitan je uticaj sadržaja K2O na kristalizaciju niobijum germanatnih stakala sa 22,7-24,27 mas % GeO2 i 54,59-57,48 mas % Nb2O5. Ova stakla kristališu primarnom kristalizacijom i stvaraju se kristalne faze K6Nb6Ge4O26, K3.8Nb5Ge3O20.4 i KNbO3. Povećanje sadržaja K2O prouzrokuje smanjenje sadržaja GeO2 u primarnim fazama. Analiziran je uticaj sadržaja K2O na kinetiku primarne kristalizacije. Pokazano je da povećanje sadržaja K2O smanjuje energiju aktivacije rasta kristala na prvom kristalizacionom piku (Ec1). Na drugom kristalizacionom piku energije aktivacije rasta kristala se povećavaju (Ec2).
PB  - International Institute for the Science of Sintering, Beograd
T2  - Science of Sintering
T1  - The effect of K2O on the crystallization of niobium germanate glasses
EP  - 53
IS  - 1
SP  - 47
VL  - 43
UR  - https://hdl.handle.net/21.15107/rcub_technorep_1832
ER  - 

@article{
author = "Matijašević, Srđan D. and Tošić, Mihajlo B. and Grujić, Snežana and Stojanović, Jovica and Živanović, Vladimir D. and Nikolić, J. D.",
year = "2011",
abstract = "The effect of K2O content on the crystallization of niobium germanate glasses with 22.7- 24.27 wt% of GeO2 and 54.59-57.48 wt% of Nb2O5 was examined. The glasses crystallize by primary crystallization and the formed crystalline phases were K6Nb6Ge4O26, K3.8Nb5Ge3O20.4 and KNbO3. Increasing the K2O content caused a decrease in the GeO2 content of the primary phases. The effect of the K2O content on the kinetics of primary crystallization was analyzed. It was demonstrated that an increase of the K2O content decreased the activation energy of crystal growth at first of the crystallization peaks (Ec1). At second crystallization peaks the activation energies of crystal growth increased (Ec2)., Ispitan je uticaj sadržaja K2O na kristalizaciju niobijum germanatnih stakala sa 22,7-24,27 mas % GeO2 i 54,59-57,48 mas % Nb2O5. Ova stakla kristališu primarnom kristalizacijom i stvaraju se kristalne faze K6Nb6Ge4O26, K3.8Nb5Ge3O20.4 i KNbO3. Povećanje sadržaja K2O prouzrokuje smanjenje sadržaja GeO2 u primarnim fazama. Analiziran je uticaj sadržaja K2O na kinetiku primarne kristalizacije. Pokazano je da povećanje sadržaja K2O smanjuje energiju aktivacije rasta kristala na prvom kristalizacionom piku (Ec1). Na drugom kristalizacionom piku energije aktivacije rasta kristala se povećavaju (Ec2).",
publisher = "International Institute for the Science of Sintering, Beograd",
journal = "Science of Sintering",
title = "The effect of K2O on the crystallization of niobium germanate glasses",
pages = "53-47",
number = "1",
volume = "43",
url = "https://hdl.handle.net/21.15107/rcub_technorep_1832"
}

Matijašević, S. D., Tošić, M. B., Grujić, S., Stojanović, J., Živanović, V. D.,& Nikolić, J. D.. (2011). The effect of K2O on the crystallization of niobium germanate glasses. in Science of Sintering
International Institute for the Science of Sintering, Beograd., 43(1), 47-53.
https://hdl.handle.net/21.15107/rcub_technorep_1832

Matijašević SD, Tošić MB, Grujić S, Stojanović J, Živanović VD, Nikolić JD. The effect of K2O on the crystallization of niobium germanate glasses. in Science of Sintering. 2011;43(1):47-53.
https://hdl.handle.net/21.15107/rcub_technorep_1832 .

Matijašević, Srđan D., Tošić, Mihajlo B., Grujić, Snežana, Stojanović, Jovica, Živanović, Vladimir D., Nikolić, J. D., "The effect of K2O on the crystallization of niobium germanate glasses" in Science of Sintering, 43, no. 1 (2011):47-53,
https://hdl.handle.net/21.15107/rcub_technorep_1832 .

TY  - JOUR
AU  - Matijašević, Srđan D.
AU  - Živanović, Vladimir D.
AU  - Tošić, Mihajlo B.
AU  - Grujić, Snežana
AU  - Stojanović, Jovica
AU  - Nikolić, Jelena D.
AU  - Ždrale, Sonja V.
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1821
AB  - This paper deals with the crystallization of glass 30Li2O·15Nb2O5·50SiO2·5TiO2 (mol%). The crystallization behavior was studied under isothermal and non-isothermal conditions. XRD and SEM methods were employed for determination of phase composition and microstructure of crystallized glass. It was detected that this glass crystallizes by the surface crystallization mechanism. SEM micrographs of the crystallized samples revealed that the crystals grow in the form of dendrites. The glass-ceramics with complex phase composition was obtained. Three crystalline phases were detected where LiNbO3 has grown as primary phase and a secondary ones Li2Si2O5 and SiO2 appeared. The calculated average crystallite sizes are: 27 nm for LiNbO3 , 115 nm for Li2Si2O5 and 45 nm for SiO2 . From the experimental data an activation energy of crystals growth, calculated using the Kissinger relation, is Ea = 275 ±10 KJ / mol.
PB  - University of Novi Sad
T2  - Processing and Application of Ceramics
T1  - Crystallization behaviour of Li2O·Nb2O5·SiO2 glass containing TiO2
EP  - 227
IS  - 4
SP  - 223
VL  - 5
UR  - https://hdl.handle.net/21.15107/rcub_technorep_1821
ER  - 

@article{
author = "Matijašević, Srđan D. and Živanović, Vladimir D. and Tošić, Mihajlo B. and Grujić, Snežana and Stojanović, Jovica and Nikolić, Jelena D. and Ždrale, Sonja V.",
year = "2011",
abstract = "This paper deals with the crystallization of glass 30Li2O·15Nb2O5·50SiO2·5TiO2 (mol%). The crystallization behavior was studied under isothermal and non-isothermal conditions. XRD and SEM methods were employed for determination of phase composition and microstructure of crystallized glass. It was detected that this glass crystallizes by the surface crystallization mechanism. SEM micrographs of the crystallized samples revealed that the crystals grow in the form of dendrites. The glass-ceramics with complex phase composition was obtained. Three crystalline phases were detected where LiNbO3 has grown as primary phase and a secondary ones Li2Si2O5 and SiO2 appeared. The calculated average crystallite sizes are: 27 nm for LiNbO3 , 115 nm for Li2Si2O5 and 45 nm for SiO2 . From the experimental data an activation energy of crystals growth, calculated using the Kissinger relation, is Ea = 275 ±10 KJ / mol.",
publisher = "University of Novi Sad",
journal = "Processing and Application of Ceramics",
title = "Crystallization behaviour of Li2O·Nb2O5·SiO2 glass containing TiO2",
pages = "227-223",
number = "4",
volume = "5",
url = "https://hdl.handle.net/21.15107/rcub_technorep_1821"
}

Matijašević, S. D., Živanović, V. D., Tošić, M. B., Grujić, S., Stojanović, J., Nikolić, J. D.,& Ždrale, S. V.. (2011). Crystallization behaviour of Li2O·Nb2O5·SiO2 glass containing TiO2. in Processing and Application of Ceramics
University of Novi Sad., 5(4), 223-227.
https://hdl.handle.net/21.15107/rcub_technorep_1821

Matijašević SD, Živanović VD, Tošić MB, Grujić S, Stojanović J, Nikolić JD, Ždrale SV. Crystallization behaviour of Li2O·Nb2O5·SiO2 glass containing TiO2. in Processing and Application of Ceramics. 2011;5(4):223-227.
https://hdl.handle.net/21.15107/rcub_technorep_1821 .

Matijašević, Srđan D., Živanović, Vladimir D., Tošić, Mihajlo B., Grujić, Snežana, Stojanović, Jovica, Nikolić, Jelena D., Ždrale, Sonja V., "Crystallization behaviour of Li2O·Nb2O5·SiO2 glass containing TiO2" in Processing and Application of Ceramics, 5, no. 4 (2011):223-227,
https://hdl.handle.net/21.15107/rcub_technorep_1821 .