TY  - JOUR
AU  - Savić, Veljko
AU  - Dojčinović, Marina
AU  - Topalović, Vladimir
AU  - Cvijović-Alagić, Ivana
AU  - Stojanović, Jovica
AU  - Matijašević, Srđan
AU  - Grujić, Snežana
PY  - 2024
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7090
AB  - The incombustible portion of coal that remains after burning is known as bottom or fly ash, and it has a detrimental influence on the environment. One of the possible alternatives for reducing the amount of ash deposited in landfills might be the production of useful glass–ceramic from vitrified fly ash. Glass–ceramic was synthesized using fly ash from the thermal power plant "Nikola Tesla" and fluxing additives. Sinter crystallization of the parent glass resulted in glass ceramics. The glass was created by melting a combination of coal fly ash (CFA), Na2CO3, and CaCO3 at T = 1500 °C and quenching the melt in the air. Glass powders were sintered at temperatures 850 and 900 °C. The resulting glass–ceramics were characterized microstructurally, physically, and mechanically. The cavitation erosion of samples was evaluated. The cavitation rate was 0.015 mg/min for the sample sintered at 850 °C and 0.0053 mg/min for the sample sintered at 900 °C. The leaching of heavy metals in glass–ceramic samples was determined using Toxicity Characteristic Leaching Procedure. A low concentration of heavy metals in the leaching solution showed that heavy metals were successfully incorporated in the glass matrix and that obtained glass–ceramics are ecologically safe for usage. Both samples exhibit good resistance to cavitation erosion, suggesting their potential as possible replacements for structural ceramics commonly employed components of hydraulic machinery.
PB  - Springer
T2  - International Journal of Environmental Science and Technology
T1  - The effect of sintering temperature on cavitation erosion in glass–ceramics based on coal fly ash
DO  - 10.1007/s13762-023-05411-9
ER  - 

@article{
author = "Savić, Veljko and Dojčinović, Marina and Topalović, Vladimir and Cvijović-Alagić, Ivana and Stojanović, Jovica and Matijašević, Srđan and Grujić, Snežana",
year = "2024",
abstract = "The incombustible portion of coal that remains after burning is known as bottom or fly ash, and it has a detrimental influence on the environment. One of the possible alternatives for reducing the amount of ash deposited in landfills might be the production of useful glass–ceramic from vitrified fly ash. Glass–ceramic was synthesized using fly ash from the thermal power plant "Nikola Tesla" and fluxing additives. Sinter crystallization of the parent glass resulted in glass ceramics. The glass was created by melting a combination of coal fly ash (CFA), Na2CO3, and CaCO3 at T = 1500 °C and quenching the melt in the air. Glass powders were sintered at temperatures 850 and 900 °C. The resulting glass–ceramics were characterized microstructurally, physically, and mechanically. The cavitation erosion of samples was evaluated. The cavitation rate was 0.015 mg/min for the sample sintered at 850 °C and 0.0053 mg/min for the sample sintered at 900 °C. The leaching of heavy metals in glass–ceramic samples was determined using Toxicity Characteristic Leaching Procedure. A low concentration of heavy metals in the leaching solution showed that heavy metals were successfully incorporated in the glass matrix and that obtained glass–ceramics are ecologically safe for usage. Both samples exhibit good resistance to cavitation erosion, suggesting their potential as possible replacements for structural ceramics commonly employed components of hydraulic machinery.",
publisher = "Springer",
journal = "International Journal of Environmental Science and Technology",
title = "The effect of sintering temperature on cavitation erosion in glass–ceramics based on coal fly ash",
doi = "10.1007/s13762-023-05411-9"
}

Savić, V., Dojčinović, M., Topalović, V., Cvijović-Alagić, I., Stojanović, J., Matijašević, S.,& Grujić, S.. (2024). The effect of sintering temperature on cavitation erosion in glass–ceramics based on coal fly ash. in International Journal of Environmental Science and Technology
Springer..
https://doi.org/10.1007/s13762-023-05411-9

Savić V, Dojčinović M, Topalović V, Cvijović-Alagić I, Stojanović J, Matijašević S, Grujić S. The effect of sintering temperature on cavitation erosion in glass–ceramics based on coal fly ash. in International Journal of Environmental Science and Technology. 2024;.
doi:10.1007/s13762-023-05411-9 .

Savić, Veljko, Dojčinović, Marina, Topalović, Vladimir, Cvijović-Alagić, Ivana, Stojanović, Jovica, Matijašević, Srđan, Grujić, Snežana, "The effect of sintering temperature on cavitation erosion in glass–ceramics based on coal fly ash" in International Journal of Environmental Science and Technology (2024),
https://doi.org/10.1007/s13762-023-05411-9 . .

TY  - JOUR
AU  - Savić, Veljko
AU  - Topalović, Vladimir
AU  - Nikolić, Jelena
AU  - Jevtić, Sanja
AU  - Manić, Nebojša
AU  - Komatina, Mirko
AU  - Matijašević, Srđan
AU  - Grujić, Snežana
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6579
AB  - Great waste production alongside limited natural resources represents huge environmental and economic problems worldwide. Sustainable waste management and industrial production can reduce pollution and gain some economic benefits. Eco-friendly thermal insulators such as foam glasses can be produced using secondary raw materials in open-loop recycling. Foam glasses were successfully produced using green bottle glass and sugar beet factory lime (SBFL), CaCO3-rich waste as a novel foaming agent. Glass powder was mixed with different amounts of SBFL, uniaxially pressed at 20 MPa, and sintered at different temperatures. The influence of sintering temperature and the addition of a foaming agent was examined. Obtained samples were mechanically, thermally, and microstructurally characterized. Results showed that samples sintered at 800 °C have the best properties. Obtained foam glasses can be used in a variety of industries where thermal insulation, non-flammability, and non-toxic materials are required.
PB  - Elsevier Ltd.
T2  - Heliyon
T1  - Foam glasses made from green bottle glass and sugar beet factory lime as a foaming agent
IS  - 7
SP  - e17664
VL  - 9
DO  - 10.1016/j.heliyon.2023.e17664
ER  - 

@article{
author = "Savić, Veljko and Topalović, Vladimir and Nikolić, Jelena and Jevtić, Sanja and Manić, Nebojša and Komatina, Mirko and Matijašević, Srđan and Grujić, Snežana",
year = "2023",
abstract = "Great waste production alongside limited natural resources represents huge environmental and economic problems worldwide. Sustainable waste management and industrial production can reduce pollution and gain some economic benefits. Eco-friendly thermal insulators such as foam glasses can be produced using secondary raw materials in open-loop recycling. Foam glasses were successfully produced using green bottle glass and sugar beet factory lime (SBFL), CaCO3-rich waste as a novel foaming agent. Glass powder was mixed with different amounts of SBFL, uniaxially pressed at 20 MPa, and sintered at different temperatures. The influence of sintering temperature and the addition of a foaming agent was examined. Obtained samples were mechanically, thermally, and microstructurally characterized. Results showed that samples sintered at 800 °C have the best properties. Obtained foam glasses can be used in a variety of industries where thermal insulation, non-flammability, and non-toxic materials are required.",
publisher = "Elsevier Ltd.",
journal = "Heliyon",
title = "Foam glasses made from green bottle glass and sugar beet factory lime as a foaming agent",
number = "7",
pages = "e17664",
volume = "9",
doi = "10.1016/j.heliyon.2023.e17664"
}

Savić, V., Topalović, V., Nikolić, J., Jevtić, S., Manić, N., Komatina, M., Matijašević, S.,& Grujić, S.. (2023). Foam glasses made from green bottle glass and sugar beet factory lime as a foaming agent. in Heliyon
Elsevier Ltd.., 9(7), e17664.
https://doi.org/10.1016/j.heliyon.2023.e17664

Savić V, Topalović V, Nikolić J, Jevtić S, Manić N, Komatina M, Matijašević S, Grujić S. Foam glasses made from green bottle glass and sugar beet factory lime as a foaming agent. in Heliyon. 2023;9(7):e17664.
doi:10.1016/j.heliyon.2023.e17664 .

Savić, Veljko, Topalović, Vladimir, Nikolić, Jelena, Jevtić, Sanja, Manić, Nebojša, Komatina, Mirko, Matijašević, Srđan, Grujić, Snežana, "Foam glasses made from green bottle glass and sugar beet factory lime as a foaming agent" in Heliyon, 9, no. 7 (2023):e17664,
https://doi.org/10.1016/j.heliyon.2023.e17664 . .

TY  - JOUR
AU  - Matijašević, Srđan D.
AU  - Topalović, Vladimir S.
AU  - Savić, Veljko V.
AU  - Labus, Nebojša J.
AU  - Nikolić, Jelena D.
AU  - Zildžović, Snežana N.
AU  - Grujić, Snežana R.
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7281
AB  - The crystal growth rate of LiGe2(PO4)3 phase from lithium germanium-phosphate glass was studied. The glass have been homogenized using the previously established temperature-time conditions, which make it possible to remove volatile substances from the glass melt. The atomic absorption spectrophotometry (AAS) was used to determine the chemical content of the obtained glass and scanning electron microscope (SEM) were used to reveal the isothermal process of crystal growth. The crystal growth rates were determined experimentally and theoretically.
PB  - International Institute for the Science of Sintering
T2  - Science of Sintering
T1  - The crystal growth of NASICON phase from the lithium germanium phosphate glass
EP  - 547
IS  - 4
SP  - 539
VL  - 55
DO  - 10.2298/SOS220809022M
ER  - 

@article{
author = "Matijašević, Srđan D. and Topalović, Vladimir S. and Savić, Veljko V. and Labus, Nebojša J. and Nikolić, Jelena D. and Zildžović, Snežana N. and Grujić, Snežana R.",
year = "2023",
abstract = "The crystal growth rate of LiGe2(PO4)3 phase from lithium germanium-phosphate glass was studied. The glass have been homogenized using the previously established temperature-time conditions, which make it possible to remove volatile substances from the glass melt. The atomic absorption spectrophotometry (AAS) was used to determine the chemical content of the obtained glass and scanning electron microscope (SEM) were used to reveal the isothermal process of crystal growth. The crystal growth rates were determined experimentally and theoretically.",
publisher = "International Institute for the Science of Sintering",
journal = "Science of Sintering",
title = "The crystal growth of NASICON phase from the lithium germanium phosphate glass",
pages = "547-539",
number = "4",
volume = "55",
doi = "10.2298/SOS220809022M"
}

Matijašević, S. D., Topalović, V. S., Savić, V. V., Labus, N. J., Nikolić, J. D., Zildžović, S. N.,& Grujić, S. R.. (2023). The crystal growth of NASICON phase from the lithium germanium phosphate glass. in Science of Sintering
International Institute for the Science of Sintering., 55(4), 539-547.
https://doi.org/10.2298/SOS220809022M

Matijašević SD, Topalović VS, Savić VV, Labus NJ, Nikolić JD, Zildžović SN, Grujić SR. The crystal growth of NASICON phase from the lithium germanium phosphate glass. in Science of Sintering. 2023;55(4):539-547.
doi:10.2298/SOS220809022M .

Matijašević, Srđan D., Topalović, Vladimir S., Savić, Veljko V., Labus, Nebojša J., Nikolić, Jelena D., Zildžović, Snežana N., Grujić, Snežana R., "The crystal growth of NASICON phase from the lithium germanium phosphate glass" in Science of Sintering, 55, no. 4 (2023):539-547,
https://doi.org/10.2298/SOS220809022M . .

TY  - JOUR
AU  - Matijašević, Srđan
AU  - Grujić, Snežana
AU  - Nikolić, Jelena
AU  - Topalović, Vladimir
AU  - Savić, Veljko
AU  - Zildžović, Snežana
AU  - Labus, Nebojša
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5370
AB  - The nucleation process of lithium germanium-phosphate glass was studied to determine the temperature range of nucleation and the temperature of the maximum nucleation rate. The differential thermal analysis (DTA), and scanning electron microscope (SEM) were used to reveal the nonisothermal and isothermal process of nucleation, respectively. The crystallization process occurred at a high homogeneous nucleation rate and the spherulitic crystal growth morphology. Nanostructured samples were obtained.
T2  - Science of Sintering
T1  - The Analysis of the Nucleation Process of the Lithium Germanium Phosphate Glass
EP  - 334
IS  - 3
SP  - 321
VL  - 54
DO  - 10.2298/SOS2203321M
UR  - https://hdl.handle.net/21.15107/rcub_dais_13580
ER  - 

@article{
author = "Matijašević, Srđan and Grujić, Snežana and Nikolić, Jelena and Topalović, Vladimir and Savić, Veljko and Zildžović, Snežana and Labus, Nebojša",
year = "2022",
abstract = "The nucleation process of lithium germanium-phosphate glass was studied to determine the temperature range of nucleation and the temperature of the maximum nucleation rate. The differential thermal analysis (DTA), and scanning electron microscope (SEM) were used to reveal the nonisothermal and isothermal process of nucleation, respectively. The crystallization process occurred at a high homogeneous nucleation rate and the spherulitic crystal growth morphology. Nanostructured samples were obtained.",
journal = "Science of Sintering",
title = "The Analysis of the Nucleation Process of the Lithium Germanium Phosphate Glass",
pages = "334-321",
number = "3",
volume = "54",
doi = "10.2298/SOS2203321M",
url = "https://hdl.handle.net/21.15107/rcub_dais_13580"
}

Matijašević, S., Grujić, S., Nikolić, J., Topalović, V., Savić, V., Zildžović, S.,& Labus, N.. (2022). The Analysis of the Nucleation Process of the Lithium Germanium Phosphate Glass. in Science of Sintering, 54(3), 321-334.
https://doi.org/10.2298/SOS2203321M
https://hdl.handle.net/21.15107/rcub_dais_13580

Matijašević S, Grujić S, Nikolić J, Topalović V, Savić V, Zildžović S, Labus N. The Analysis of the Nucleation Process of the Lithium Germanium Phosphate Glass. in Science of Sintering. 2022;54(3):321-334.
doi:10.2298/SOS2203321M
https://hdl.handle.net/21.15107/rcub_dais_13580 .

Matijašević, Srđan, Grujić, Snežana, Nikolić, Jelena, Topalović, Vladimir, Savić, Veljko, Zildžović, Snežana, Labus, Nebojša, "The Analysis of the Nucleation Process of the Lithium Germanium Phosphate Glass" in Science of Sintering, 54, no. 3 (2022):321-334,
https://doi.org/10.2298/SOS2203321M .,
https://hdl.handle.net/21.15107/rcub_dais_13580 .

TY  - JOUR
AU  - Smiljanić, Sonja
AU  - Grujić, Snežana
AU  - Matijašević, Srđan D.
AU  - Stojanović, Jovica
AU  - Nikolić, Jelena
AU  - Savić, Veljko
AU  - Popović, Daniela
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/13
AB  - The crystal growth rate of La(2)SrB(10)O(19)in an undercooled melt of stoichiometric composition was studied. The crystallization of the bulk samples was performed in a single-stage regime under isothermal conditions at the selected temperatures for the different time periods. The surface crystallization was observed and in all crystallized samples, the La(2)SrB(10)O(19)crystalline phase was identified. Based on the dependence of the crystalline layer thickness on treatment time at selected temperature, crystal growth rate was obtained. The crystal growth rates were from 1.65 x 10(-8)to 2.77 x 10(-7)m s(-1)in the temperature interval (700-780 degrees C). The experimental values were compared to the calculated values using theoretical model of the crystal growth. The experimental growth rate followed the same trend as the calculated growth rate, but the experimental values were higher than the calculated.
PB  - Springer, Dordrecht
T2  - Journal of Thermal Analysis and Calorimetry
T1  - Crystal growth of la(2)srb(10)o(19)from undercooled melt
DO  - 10.1007/s10973-020-10122-1
ER  - 

@article{
author = "Smiljanić, Sonja and Grujić, Snežana and Matijašević, Srđan D. and Stojanović, Jovica and Nikolić, Jelena and Savić, Veljko and Popović, Daniela",
year = "2020",
abstract = "The crystal growth rate of La(2)SrB(10)O(19)in an undercooled melt of stoichiometric composition was studied. The crystallization of the bulk samples was performed in a single-stage regime under isothermal conditions at the selected temperatures for the different time periods. The surface crystallization was observed and in all crystallized samples, the La(2)SrB(10)O(19)crystalline phase was identified. Based on the dependence of the crystalline layer thickness on treatment time at selected temperature, crystal growth rate was obtained. The crystal growth rates were from 1.65 x 10(-8)to 2.77 x 10(-7)m s(-1)in the temperature interval (700-780 degrees C). The experimental values were compared to the calculated values using theoretical model of the crystal growth. The experimental growth rate followed the same trend as the calculated growth rate, but the experimental values were higher than the calculated.",
publisher = "Springer, Dordrecht",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "Crystal growth of la(2)srb(10)o(19)from undercooled melt",
doi = "10.1007/s10973-020-10122-1"
}

Smiljanić, S., Grujić, S., Matijašević, S. D., Stojanović, J., Nikolić, J., Savić, V.,& Popović, D.. (2020). Crystal growth of la(2)srb(10)o(19)from undercooled melt. in Journal of Thermal Analysis and Calorimetry
Springer, Dordrecht..
https://doi.org/10.1007/s10973-020-10122-1

Smiljanić S, Grujić S, Matijašević SD, Stojanović J, Nikolić J, Savić V, Popović D. Crystal growth of la(2)srb(10)o(19)from undercooled melt. in Journal of Thermal Analysis and Calorimetry. 2020;.
doi:10.1007/s10973-020-10122-1 .

Smiljanić, Sonja, Grujić, Snežana, Matijašević, Srđan D., Stojanović, Jovica, Nikolić, Jelena, Savić, Veljko, Popović, Daniela, "Crystal growth of la(2)srb(10)o(19)from undercooled melt" in Journal of Thermal Analysis and Calorimetry (2020),
https://doi.org/10.1007/s10973-020-10122-1 . .

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  - Stojanović, Jovica
AU  - Smiljanić, Sonja
AU  - Grujić, Snežana
AU  - Vulić, Predrag
AU  - Matijašević, Srđan D.
AU  - Nikolić, Jelena D.
AU  - Savić, Veljko
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4305
AB  - The crystal structure of new lanthanum strontium borate glass-ceramics was refined by the Rietveld method. The results showed that La2SrB10O19 has the monoclinic crystal structure, space group C2 (No. 5) with a = 11.1170(6), b = 6.5667(3), c = 9.2363(3) angstrom,beta = 91.481 degrees, V = 674.04(7) angstrom(3), two formula units per unit-cell, and density 3.830 g cm(-3). The main building units of the crystal structure are BO4 tetrahedra and BO3 triangles. Clusters composed of [B5O12] form an infinite double layer running perpendicular to the c-axis. Lanthanum atoms, situated in [B5O12](n) layers, are coordinated with 10 oxygen atom in a form of LaO10 polyhedra, while Sr atoms, located between [B5O12](n) layers, are coordinated with 8 oxygen atoms in a form of SrO8 polyhedra. Microstructural measurements contain both crystallite domain sizes and microstrain calculations obtained by the Warren Averbach and the simplified integral-breadth methods.
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - Structure and Microstructure Characterization of the La2SrB10O19 Glass-ceramics
EP  - 399
IS  - 4
SP  - 389
VL  - 51
DO  - 10.2298/SOS1904389S
ER  - 

@article{
author = "Stojanović, Jovica and Smiljanić, Sonja and Grujić, Snežana and Vulić, Predrag and Matijašević, Srđan D. and Nikolić, Jelena D. and Savić, Veljko",
year = "2019",
abstract = "The crystal structure of new lanthanum strontium borate glass-ceramics was refined by the Rietveld method. The results showed that La2SrB10O19 has the monoclinic crystal structure, space group C2 (No. 5) with a = 11.1170(6), b = 6.5667(3), c = 9.2363(3) angstrom,beta = 91.481 degrees, V = 674.04(7) angstrom(3), two formula units per unit-cell, and density 3.830 g cm(-3). The main building units of the crystal structure are BO4 tetrahedra and BO3 triangles. Clusters composed of [B5O12] form an infinite double layer running perpendicular to the c-axis. Lanthanum atoms, situated in [B5O12](n) layers, are coordinated with 10 oxygen atom in a form of LaO10 polyhedra, while Sr atoms, located between [B5O12](n) layers, are coordinated with 8 oxygen atoms in a form of SrO8 polyhedra. Microstructural measurements contain both crystallite domain sizes and microstrain calculations obtained by the Warren Averbach and the simplified integral-breadth methods.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "Structure and Microstructure Characterization of the La2SrB10O19 Glass-ceramics",
pages = "399-389",
number = "4",
volume = "51",
doi = "10.2298/SOS1904389S"
}

Stojanović, J., Smiljanić, S., Grujić, S., Vulić, P., Matijašević, S. D., Nikolić, J. D.,& Savić, V.. (2019). Structure and Microstructure Characterization of the La2SrB10O19 Glass-ceramics. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 51(4), 389-399.
https://doi.org/10.2298/SOS1904389S

Stojanović J, Smiljanić S, Grujić S, Vulić P, Matijašević SD, Nikolić JD, Savić V. Structure and Microstructure Characterization of the La2SrB10O19 Glass-ceramics. in Science of Sintering. 2019;51(4):389-399.
doi:10.2298/SOS1904389S .

Stojanović, Jovica, Smiljanić, Sonja, Grujić, Snežana, Vulić, Predrag, Matijašević, Srđan D., Nikolić, Jelena D., Savić, Veljko, "Structure and Microstructure Characterization of the La2SrB10O19 Glass-ceramics" in Science of Sintering, 51, no. 4 (2019):389-399,
https://doi.org/10.2298/SOS1904389S . .

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  - 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 . .