TY  - JOUR
AU  - Marković, Snežana
AU  - Radojković, Bojana
AU  - Jegdić, Bore
AU  - Jovanović, Aleksandar
AU  - Stojanović, Jovica
AU  - Trumić, Milan
AU  - Manojlović, Vaso
PY  - 2024
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7408
AB  - The corrosion behaviour of three types of alloys (two low-alloy carbon steel and one stainless iron with ~15 wt.% Cr), in a solution which simulates seawater (3% NaCl solution, pH 8.1) was tested. Tested samples are used to make steel (iron) balls applied in mils for grinding copper and other ore. The corrosion tests were performed using three electrochemical methods, at room temperature in the presence of atmospheric oxygen. The linear polarization resistance (LPR) method, electrochemical impedance spectroscopy (EIS) method, and linear sweep voltammetry (LSV) method were applied. Based on measurements by LPR and EIS methods (as non-destructive methods), the value of polarization resistance (Rp) was determined and the general corrosion rate (vcorr) of the examined samples was calculated. The obtained values of the general corrosion rate can be used to calculate the service life of steel (iron) balls under exploitation conditions (seawater). The appearance of the surface after linear sweep voltammetry (LSV) measurement showed the presence of localized corrosion (pits were formed) of the tested samples, especially stainless iron, and the LSV method is not suitable for the determination of the general corrosion rate of tested samples in seawater. This form of corrosion occurs at high anodic polarizations, during performing LSV measurements.
AB  - Ispitivano  je  koroziono  ponašanje  tri  vrste legura(dva  nisko-legirana  ugljenična  čelika  i  jedanuzorakje nerđajuće gvožđe sa ~15% Cr), u rastvoru koji simulira morsku vodu (3% rastvor NaCl, pH 8,1). Ispitani uzorcise koriste za proizvodnju čeličnih kugli koje se primenjuju u mlinovima za mlevenje  bakarnih  i  drugih  ruda. Koroziona  ispitivanja  su  izvedena  primenom  tri  elektrohemijske metode, na sobnoj temperaturi u prisustvu atmosferskog kiseonika. Korišćene su metoda linearne polarizacione   otpornosti   (LPR),   metoda   elektrohemijske   impedansne   spektroskopije   (EIS)   i metoda  linearne  promene  potencijala  (LSV).  Na  osnovu  merenja  LPR  i  EIS  metodama  (kao nerazarajućim  metodama),  određena  je  vrednost  polarizacione  otpornosti  (Rp),   a   zatim   je izračunata vrednost brzine opšte korozije (vkor)  ispitivanih uzoraka.  Dobijene  vrednosti  za  brzinu opšte  korozije  se  mogu  koristiti  za  izračunavanje  veka  trajanja  kugli  u  uslovima  eksploatacije (morska  voda).  Izgled  površine  ispitivanih uzorakanakon  izvođenja  LSV  metode  pokazao  je prisustvo  lokalizovane  korozije  (formirane  su  jamice,  pitovi)  na  ispitivanim uzorcima,  posebno  na nerđajućem gvožđu. Prema tome, LSV metoda nije pogodna za određivanje brzine opšte korozije ispitivanih čelika u morskoj vodi. Ovaj oblik korozije javlja se pri visokim anodnim polarizacijama tokom izvođenja LSV merenja.
PB  - Inženjersko društvo za koroziju
T2  - Zaštita materijala
T1  - Corrosion behavior of high- and low-chromium steel grinding balls in chloride solution
T1  - Koroziono ponašanje čeličnih kuglica za mlevenje sa visokim i niskim sadržajem hroma u rastvoru hlorida
EP  - 53
IS  - 1
SP  - 45
VL  - 65
DO  - 10.62638/zasmat998
ER  - 

@article{
author = "Marković, Snežana and Radojković, Bojana and Jegdić, Bore and Jovanović, Aleksandar and Stojanović, Jovica and Trumić, Milan and Manojlović, Vaso",
year = "2024",
abstract = "The corrosion behaviour of three types of alloys (two low-alloy carbon steel and one stainless iron with ~15 wt.% Cr), in a solution which simulates seawater (3% NaCl solution, pH 8.1) was tested. Tested samples are used to make steel (iron) balls applied in mils for grinding copper and other ore. The corrosion tests were performed using three electrochemical methods, at room temperature in the presence of atmospheric oxygen. The linear polarization resistance (LPR) method, electrochemical impedance spectroscopy (EIS) method, and linear sweep voltammetry (LSV) method were applied. Based on measurements by LPR and EIS methods (as non-destructive methods), the value of polarization resistance (Rp) was determined and the general corrosion rate (vcorr) of the examined samples was calculated. The obtained values of the general corrosion rate can be used to calculate the service life of steel (iron) balls under exploitation conditions (seawater). The appearance of the surface after linear sweep voltammetry (LSV) measurement showed the presence of localized corrosion (pits were formed) of the tested samples, especially stainless iron, and the LSV method is not suitable for the determination of the general corrosion rate of tested samples in seawater. This form of corrosion occurs at high anodic polarizations, during performing LSV measurements., Ispitivano  je  koroziono  ponašanje  tri  vrste legura(dva  nisko-legirana  ugljenična  čelika  i  jedanuzorakje nerđajuće gvožđe sa ~15% Cr), u rastvoru koji simulira morsku vodu (3% rastvor NaCl, pH 8,1). Ispitani uzorcise koriste za proizvodnju čeličnih kugli koje se primenjuju u mlinovima za mlevenje  bakarnih  i  drugih  ruda. Koroziona  ispitivanja  su  izvedena  primenom  tri  elektrohemijske metode, na sobnoj temperaturi u prisustvu atmosferskog kiseonika. Korišćene su metoda linearne polarizacione   otpornosti   (LPR),   metoda   elektrohemijske   impedansne   spektroskopije   (EIS)   i metoda  linearne  promene  potencijala  (LSV).  Na  osnovu  merenja  LPR  i  EIS  metodama  (kao nerazarajućim  metodama),  određena  je  vrednost  polarizacione  otpornosti  (Rp),   a   zatim   je izračunata vrednost brzine opšte korozije (vkor)  ispitivanih uzoraka.  Dobijene  vrednosti  za  brzinu opšte  korozije  se  mogu  koristiti  za  izračunavanje  veka  trajanja  kugli  u  uslovima  eksploatacije (morska  voda).  Izgled  površine  ispitivanih uzorakanakon  izvođenja  LSV  metode  pokazao  je prisustvo  lokalizovane  korozije  (formirane  su  jamice,  pitovi)  na  ispitivanim uzorcima,  posebno  na nerđajućem gvožđu. Prema tome, LSV metoda nije pogodna za određivanje brzine opšte korozije ispitivanih čelika u morskoj vodi. Ovaj oblik korozije javlja se pri visokim anodnim polarizacijama tokom izvođenja LSV merenja.",
publisher = "Inženjersko društvo za koroziju",
journal = "Zaštita materijala",
title = "Corrosion behavior of high- and low-chromium steel grinding balls in chloride solution, Koroziono ponašanje čeličnih kuglica za mlevenje sa visokim i niskim sadržajem hroma u rastvoru hlorida",
pages = "53-45",
number = "1",
volume = "65",
doi = "10.62638/zasmat998"
}

Marković, S., Radojković, B., Jegdić, B., Jovanović, A., Stojanović, J., Trumić, M.,& Manojlović, V.. (2024). Corrosion behavior of high- and low-chromium steel grinding balls in chloride solution. in Zaštita materijala
Inženjersko društvo za koroziju., 65(1), 45-53.
https://doi.org/10.62638/zasmat998

Marković S, Radojković B, Jegdić B, Jovanović A, Stojanović J, Trumić M, Manojlović V. Corrosion behavior of high- and low-chromium steel grinding balls in chloride solution. in Zaštita materijala. 2024;65(1):45-53.
doi:10.62638/zasmat998 .

Marković, Snežana, Radojković, Bojana, Jegdić, Bore, Jovanović, Aleksandar, Stojanović, Jovica, Trumić, Milan, Manojlović, Vaso, "Corrosion behavior of high- and low-chromium steel grinding balls in chloride solution" in Zaštita materijala, 65, no. 1 (2024):45-53,
https://doi.org/10.62638/zasmat998 . .

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  - Đošić, Marija
AU  - Janković, Ana
AU  - Stevanović, Milena
AU  - Stojanović, Jovica
AU  - Vukašinović-Sekulić, Maja
AU  - Kojić, Vesna
AU  - Mišković-Stanković, Vesna
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6364
AB  - Electrophoretic deposition (EPD) was employed to fabricate composite coatings aimed for orthopedic implants. Hydroxyapatite (HAP), poly(vinyl alcohol) (PVA) and chitosan (CS) coatings, with or without antibiotic gentamicin (Gent) were deposited in a single-step process from aqueous suspension, using EPD. Polymer/mineral composite coatings were formed with the aim to mimic the natural composition of bone tissue, along with improved coatings antibacterial properties, at the same time serving as a drug carrier, allowing local administration of antibiotic. Structural and morphological characterization of HAP/PVA/CS and HAP/PVA/CS/Gent coatings was investigated by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), thermogravimetric analysis (TG/DTG), and scanning electron microscopy (SEM) proving carbonate-substituted HAP. The presence of gentamicin contributed to the bactericidal activity of composite HAP/PVA/CS/Gent coating against Staphylococcus aureus and Escherichia coli. Cytotoxicity studies were performed towards human MRC-5 and mice L929 fibroblast cell lines, and both investigated samples (HAP/PVA/CS and HAP/PVA/CS/Gent) expressed good biocompatibility, without causing toxic effect on tested cells. Biomineralization potential was investigated by measuring the alkaline phosphatase activity, demonstrating high potential of HAP/PVA/CS/Gent to induce the growth of new HAP layer. Therefore, the present investigation proposes the production of composite coatings from non-toxic (aqueous) suspensions, consisting of biocompatible and bioactive components, along with antibiotic gentamicin, improving the antibacterial coatings' properties.
PB  - Elsevier Ltd.
T2  - Materials Chemistry and Physics
T1  - Hydroxyapatite/poly(vinyl alcohol)/chitosan coating with gentamicin for orthopedic implants
SP  - 127766
VL  - 303
DO  - 10.1016/j.matchemphys.2023.127766
ER  - 

@article{
author = "Đošić, Marija and Janković, Ana and Stevanović, Milena and Stojanović, Jovica and Vukašinović-Sekulić, Maja and Kojić, Vesna and Mišković-Stanković, Vesna",
year = "2023",
abstract = "Electrophoretic deposition (EPD) was employed to fabricate composite coatings aimed for orthopedic implants. Hydroxyapatite (HAP), poly(vinyl alcohol) (PVA) and chitosan (CS) coatings, with or without antibiotic gentamicin (Gent) were deposited in a single-step process from aqueous suspension, using EPD. Polymer/mineral composite coatings were formed with the aim to mimic the natural composition of bone tissue, along with improved coatings antibacterial properties, at the same time serving as a drug carrier, allowing local administration of antibiotic. Structural and morphological characterization of HAP/PVA/CS and HAP/PVA/CS/Gent coatings was investigated by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), thermogravimetric analysis (TG/DTG), and scanning electron microscopy (SEM) proving carbonate-substituted HAP. The presence of gentamicin contributed to the bactericidal activity of composite HAP/PVA/CS/Gent coating against Staphylococcus aureus and Escherichia coli. Cytotoxicity studies were performed towards human MRC-5 and mice L929 fibroblast cell lines, and both investigated samples (HAP/PVA/CS and HAP/PVA/CS/Gent) expressed good biocompatibility, without causing toxic effect on tested cells. Biomineralization potential was investigated by measuring the alkaline phosphatase activity, demonstrating high potential of HAP/PVA/CS/Gent to induce the growth of new HAP layer. Therefore, the present investigation proposes the production of composite coatings from non-toxic (aqueous) suspensions, consisting of biocompatible and bioactive components, along with antibiotic gentamicin, improving the antibacterial coatings' properties.",
publisher = "Elsevier Ltd.",
journal = "Materials Chemistry and Physics",
title = "Hydroxyapatite/poly(vinyl alcohol)/chitosan coating with gentamicin for orthopedic implants",
pages = "127766",
volume = "303",
doi = "10.1016/j.matchemphys.2023.127766"
}

Đošić, M., Janković, A., Stevanović, M., Stojanović, J., Vukašinović-Sekulić, M., Kojić, V.,& Mišković-Stanković, V.. (2023). Hydroxyapatite/poly(vinyl alcohol)/chitosan coating with gentamicin for orthopedic implants. in Materials Chemistry and Physics
Elsevier Ltd.., 303, 127766.
https://doi.org/10.1016/j.matchemphys.2023.127766

Đošić M, Janković A, Stevanović M, Stojanović J, Vukašinović-Sekulić M, Kojić V, Mišković-Stanković V. Hydroxyapatite/poly(vinyl alcohol)/chitosan coating with gentamicin for orthopedic implants. in Materials Chemistry and Physics. 2023;303:127766.
doi:10.1016/j.matchemphys.2023.127766 .

Đošić, Marija, Janković, Ana, Stevanović, Milena, Stojanović, Jovica, Vukašinović-Sekulić, Maja, Kojić, Vesna, Mišković-Stanković, Vesna, "Hydroxyapatite/poly(vinyl alcohol)/chitosan coating with gentamicin for orthopedic implants" in Materials Chemistry and Physics, 303 (2023):127766,
https://doi.org/10.1016/j.matchemphys.2023.127766 . .

TY  - JOUR
AU  - Jaćimović, Nevena
AU  - Đošić, Marija
AU  - Janković, Ana
AU  - Grujić, Svetlana
AU  - Matić Bujagić, Ivana
AU  - Stojanović, Jovica
AU  - Vukašinović-Sekulić, Maja
AU  - Kojić, Vesna
AU  - Mišković-Stanković, Vesna
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7260
AB  - Biocomposite hydroxyapatite/poly(vinyl alcohol)/chitosan/gentamicin coatings were fabricated on titanium by an electrophoretic deposition process (EPD) from an aqueous suspension using the constant voltage method. Characterization of the deposited coatings was performed by scanning electron micros-copy with field emission (FE-SEM), Fourier transform infrared spectroscopy (FT-IR), and X-ray diffraction (XRD) after immersion in simulated body fluid (SBF) at 37 °C. The concentration of the released gentamicin was determined using high-performance liquid chromatography (HPLC) coupled with a mass spectrometer (MS). The release profile confirmed an initial “burst-release effect” with ~ 30 % of the gen-tamicin released in the first 48 h, which could be of assistance in the prevention of biofilm formation. An-tibacterial activity was proven by the agar diffusion method on Staphylococcus aureus TL and Escherich-ia coli ATCC 25922 bacterial strains. Cytotoxicity was tested by the dye exclusion test (DET) on MRC-5 and L929 fibroblast cell lines, with both coatings expressing nontoxicity. The results showed the high ap-plicability potential of a poly(vinyl alcohol)-based biocomposite coating for medical purposes.
PB  - Society of Chemists and Technologists of Macedonia
T2  - Macedonian Journal of Chemistry and Chemical Engineering
T1  - Single-step, electrophoretically deposited hydroxyapatite/poly(vinyl alcohol)/chitosan/gentamicin coating for biomedical applications
EP  - 262
IS  - 2
SP  - 249
VL  - 42
DO  - 10.20450/mjcce.2023.2775
ER  - 

@article{
author = "Jaćimović, Nevena and Đošić, Marija and Janković, Ana and Grujić, Svetlana and Matić Bujagić, Ivana and Stojanović, Jovica and Vukašinović-Sekulić, Maja and Kojić, Vesna and Mišković-Stanković, Vesna",
year = "2023",
abstract = "Biocomposite hydroxyapatite/poly(vinyl alcohol)/chitosan/gentamicin coatings were fabricated on titanium by an electrophoretic deposition process (EPD) from an aqueous suspension using the constant voltage method. Characterization of the deposited coatings was performed by scanning electron micros-copy with field emission (FE-SEM), Fourier transform infrared spectroscopy (FT-IR), and X-ray diffraction (XRD) after immersion in simulated body fluid (SBF) at 37 °C. The concentration of the released gentamicin was determined using high-performance liquid chromatography (HPLC) coupled with a mass spectrometer (MS). The release profile confirmed an initial “burst-release effect” with ~ 30 % of the gen-tamicin released in the first 48 h, which could be of assistance in the prevention of biofilm formation. An-tibacterial activity was proven by the agar diffusion method on Staphylococcus aureus TL and Escherich-ia coli ATCC 25922 bacterial strains. Cytotoxicity was tested by the dye exclusion test (DET) on MRC-5 and L929 fibroblast cell lines, with both coatings expressing nontoxicity. The results showed the high ap-plicability potential of a poly(vinyl alcohol)-based biocomposite coating for medical purposes.",
publisher = "Society of Chemists and Technologists of Macedonia",
journal = "Macedonian Journal of Chemistry and Chemical Engineering",
title = "Single-step, electrophoretically deposited hydroxyapatite/poly(vinyl alcohol)/chitosan/gentamicin coating for biomedical applications",
pages = "262-249",
number = "2",
volume = "42",
doi = "10.20450/mjcce.2023.2775"
}

Jaćimović, N., Đošić, M., Janković, A., Grujić, S., Matić Bujagić, I., Stojanović, J., Vukašinović-Sekulić, M., Kojić, V.,& Mišković-Stanković, V.. (2023). Single-step, electrophoretically deposited hydroxyapatite/poly(vinyl alcohol)/chitosan/gentamicin coating for biomedical applications. in Macedonian Journal of Chemistry and Chemical Engineering
Society of Chemists and Technologists of Macedonia., 42(2), 249-262.
https://doi.org/10.20450/mjcce.2023.2775

Jaćimović N, Đošić M, Janković A, Grujić S, Matić Bujagić I, Stojanović J, Vukašinović-Sekulić M, Kojić V, Mišković-Stanković V. Single-step, electrophoretically deposited hydroxyapatite/poly(vinyl alcohol)/chitosan/gentamicin coating for biomedical applications. in Macedonian Journal of Chemistry and Chemical Engineering. 2023;42(2):249-262.
doi:10.20450/mjcce.2023.2775 .

Jaćimović, Nevena, Đošić, Marija, Janković, Ana, Grujić, Svetlana, Matić Bujagić, Ivana, Stojanović, Jovica, Vukašinović-Sekulić, Maja, Kojić, Vesna, Mišković-Stanković, Vesna, "Single-step, electrophoretically deposited hydroxyapatite/poly(vinyl alcohol)/chitosan/gentamicin coating for biomedical applications" in Macedonian Journal of Chemistry and Chemical Engineering, 42, no. 2 (2023):249-262,
https://doi.org/10.20450/mjcce.2023.2775 . .

TY  - JOUR
AU  - Topalović, Vladimir
AU  - Nikolić, Jelena
AU  - Matijašević, Srđan
AU  - Stojanović, Jovica
AU  - Karamanov, Alexander
AU  - Grujić, Snežana
AU  - Jevtić, Sanja
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5272
AB  - The goal of this research is to investigate the effect of SrO and La2O3 addition on the crystallization characteristics and sintering behavior of polyphosphate glasses. Differential scanning calorimetry (DSC), hot stage microscopy (HSM), X-ray diffraction (XRD), and scanning electron microscopy (SEM) methods were used to investigate the crystallization and sintering behaviors of glasses. The addition of SrO and La2O3 (1 or 5%), at the expense of phosphate mole fraction in polyphosphate bioactive glass, raises the characteristic temperature of glasses, and resistance to crystallization. Furthermore, the temperature of maximal shrinkage increases with the addition of SrO and La2O3. Surface crystallization is the dominant mechanism of crystallization in all samples. All glasses show complex crystallization leading to the formation of several crystalline phases. Sintered phosphate glass–ceramic containing bioactive β-CaP2O6, α-Ca3(PO4)2, and β-Ca3(PO4)2 phases were successfully prepared.
PB  - Springer Science and Business Media B.V.
T2  - Journal of Thermal Analysis and Calorimetry
T1  - The effect of SrO and La2O3 addition on the crystallization characteristics and sintering behavior of distinct polyphosphate glasses
DO  - 10.1007/s10973-022-11777-8
ER  - 

@article{
author = "Topalović, Vladimir and Nikolić, Jelena and Matijašević, Srđan and Stojanović, Jovica and Karamanov, Alexander and Grujić, Snežana and Jevtić, Sanja",
year = "2022",
abstract = "The goal of this research is to investigate the effect of SrO and La2O3 addition on the crystallization characteristics and sintering behavior of polyphosphate glasses. Differential scanning calorimetry (DSC), hot stage microscopy (HSM), X-ray diffraction (XRD), and scanning electron microscopy (SEM) methods were used to investigate the crystallization and sintering behaviors of glasses. The addition of SrO and La2O3 (1 or 5%), at the expense of phosphate mole fraction in polyphosphate bioactive glass, raises the characteristic temperature of glasses, and resistance to crystallization. Furthermore, the temperature of maximal shrinkage increases with the addition of SrO and La2O3. Surface crystallization is the dominant mechanism of crystallization in all samples. All glasses show complex crystallization leading to the formation of several crystalline phases. Sintered phosphate glass–ceramic containing bioactive β-CaP2O6, α-Ca3(PO4)2, and β-Ca3(PO4)2 phases were successfully prepared.",
publisher = "Springer Science and Business Media B.V.",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "The effect of SrO and La2O3 addition on the crystallization characteristics and sintering behavior of distinct polyphosphate glasses",
doi = "10.1007/s10973-022-11777-8"
}

Topalović, V., Nikolić, J., Matijašević, S., Stojanović, J., Karamanov, A., Grujić, S.,& Jevtić, S.. (2022). The effect of SrO and La2O3 addition on the crystallization characteristics and sintering behavior of distinct polyphosphate glasses. in Journal of Thermal Analysis and Calorimetry
Springer Science and Business Media B.V...
https://doi.org/10.1007/s10973-022-11777-8

Topalović V, Nikolić J, Matijašević S, Stojanović J, Karamanov A, Grujić S, Jevtić S. The effect of SrO and La2O3 addition on the crystallization characteristics and sintering behavior of distinct polyphosphate glasses. in Journal of Thermal Analysis and Calorimetry. 2022;.
doi:10.1007/s10973-022-11777-8 .

Topalović, Vladimir, Nikolić, Jelena, Matijašević, Srđan, Stojanović, Jovica, Karamanov, Alexander, Grujić, Snežana, Jevtić, Sanja, "The effect of SrO and La2O3 addition on the crystallization characteristics and sintering behavior of distinct polyphosphate glasses" in Journal of Thermal Analysis and Calorimetry (2022),
https://doi.org/10.1007/s10973-022-11777-8 . .

TY  - JOUR
AU  - Sokić, Miroslav
AU  - Stojanović, Jovica
AU  - Marković, Branislav
AU  - Kamberović, Željko
AU  - Gajić, Nataša
AU  - Radosavljević-Mihajlović, Ana
AU  - Milojkov, Dušan
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5238
AB  - This paper examines the effects of structural-textural characteristics of sulfide minerals on their leaching from polymetallic concentrates with sulfuric acid and hydrogen peroxide solutions. The polymetallic concentrate was obtained by flotation of polymetallic ore from the Rudnik deposit in Serbia. X-ray diffraction (XRD), qualitative and quantitative mineralogical, scanning electron microscopy (SEM/EDX), and chemical analyses were used to characterize the polymetallic concentrate and leach residue. The polymetallic concentrate contained chalcopyrite, galena, sphalerite, pyrrhotite, and quartz. The total content of sulfide minerals was 69.5%, and the occurrence of free sulfide mineral grains was about 60.9%. The comprehensive thermodynamic analysis was done by HSC Chemistry® package 9.9.2.3 to determine optimal experimental leaching conditions. Chalcopyrite, sphalerite, and pyrrhotite oxidized during leaching, and dissolution occurred. The oxidized galena remains in the solid residual as insoluble anglesite. Also, elemental sulfur and unleached minerals of copper, zinc, and iron were found in the leach residues. It was found that the structural assembly of sulfide minerals in the leach residue is very favorable and that undissolved sulfide grains are primarily present in free form. Accordingly, there was no reason to reduce the leaching rate with time. The presence of elemental sulfur and anglesite formed in the leaching process and precipitated on the surface of mineral grains was confirmed by XRD, quantitative and qualitative mineralogical analysis, and SEM/EDX.
PB  - Pleiades journals
T2  - Russian Journal of Non-Ferrous Metals
T1  - Modification of Structural-Textural Properties of Sulfide Minerals at Polymetallic Concentrate Leaching with Sulfuric Acid and Hydrogen Peroxide Solutions
EP  - 472
IS  - 5
SP  - 457
VL  - 63
DO  - 10.3103/S1067821222050091
ER  - 

@article{
author = "Sokić, Miroslav and Stojanović, Jovica and Marković, Branislav and Kamberović, Željko and Gajić, Nataša and Radosavljević-Mihajlović, Ana and Milojkov, Dušan",
year = "2022",
abstract = "This paper examines the effects of structural-textural characteristics of sulfide minerals on their leaching from polymetallic concentrates with sulfuric acid and hydrogen peroxide solutions. The polymetallic concentrate was obtained by flotation of polymetallic ore from the Rudnik deposit in Serbia. X-ray diffraction (XRD), qualitative and quantitative mineralogical, scanning electron microscopy (SEM/EDX), and chemical analyses were used to characterize the polymetallic concentrate and leach residue. The polymetallic concentrate contained chalcopyrite, galena, sphalerite, pyrrhotite, and quartz. The total content of sulfide minerals was 69.5%, and the occurrence of free sulfide mineral grains was about 60.9%. The comprehensive thermodynamic analysis was done by HSC Chemistry® package 9.9.2.3 to determine optimal experimental leaching conditions. Chalcopyrite, sphalerite, and pyrrhotite oxidized during leaching, and dissolution occurred. The oxidized galena remains in the solid residual as insoluble anglesite. Also, elemental sulfur and unleached minerals of copper, zinc, and iron were found in the leach residues. It was found that the structural assembly of sulfide minerals in the leach residue is very favorable and that undissolved sulfide grains are primarily present in free form. Accordingly, there was no reason to reduce the leaching rate with time. The presence of elemental sulfur and anglesite formed in the leaching process and precipitated on the surface of mineral grains was confirmed by XRD, quantitative and qualitative mineralogical analysis, and SEM/EDX.",
publisher = "Pleiades journals",
journal = "Russian Journal of Non-Ferrous Metals",
title = "Modification of Structural-Textural Properties of Sulfide Minerals at Polymetallic Concentrate Leaching with Sulfuric Acid and Hydrogen Peroxide Solutions",
pages = "472-457",
number = "5",
volume = "63",
doi = "10.3103/S1067821222050091"
}

Sokić, M., Stojanović, J., Marković, B., Kamberović, Ž., Gajić, N., Radosavljević-Mihajlović, A.,& Milojkov, D.. (2022). Modification of Structural-Textural Properties of Sulfide Minerals at Polymetallic Concentrate Leaching with Sulfuric Acid and Hydrogen Peroxide Solutions. in Russian Journal of Non-Ferrous Metals
Pleiades journals., 63(5), 457-472.
https://doi.org/10.3103/S1067821222050091

Sokić M, Stojanović J, Marković B, Kamberović Ž, Gajić N, Radosavljević-Mihajlović A, Milojkov D. Modification of Structural-Textural Properties of Sulfide Minerals at Polymetallic Concentrate Leaching with Sulfuric Acid and Hydrogen Peroxide Solutions. in Russian Journal of Non-Ferrous Metals. 2022;63(5):457-472.
doi:10.3103/S1067821222050091 .

Sokić, Miroslav, Stojanović, Jovica, Marković, Branislav, Kamberović, Željko, Gajić, Nataša, Radosavljević-Mihajlović, Ana, Milojkov, Dušan, "Modification of Structural-Textural Properties of Sulfide Minerals at Polymetallic Concentrate Leaching with Sulfuric Acid and Hydrogen Peroxide Solutions" in Russian Journal of Non-Ferrous Metals, 63, no. 5 (2022):457-472,
https://doi.org/10.3103/S1067821222050091 . .

TY  - JOUR
AU  - Prstić, Aurel
AU  - Aćimović-Pavlović, Zagorka
AU  - Andrić, Ljubiša
AU  - Stojanović, Jovica
AU  - Terzić, Anja
PY  - 2012
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5748
AB  - U ovom radu je istraživana mogućnost dobijanja novih vatrostalnih premaza na bazi cirkona koji bi imali primenu u livarstvu. Optimizacija sastava premaza kontrolisana reološkim svojstvima postignuta je primenom različitih komponenata premaza, naročito primenom novog veziva na bazi suspenzije i variranjem načina spravljanja premaza. Čestice cirkonskoh praha veličine 25×10-6 m su korišćene kao ispuna. Uzorak cirkona ispitivan je pomoću sledećih metoda: difrakcija X-zraka, diferencijalna termalna analiza i mikroskopija. Oblik i veličina zrna su analizirani pomoću računarskog programa za analizu slike OZARIA 2.5. Pokazano je da primena ovih premaza na bazi vode i alkohola ima pozitivan uticaj na kvalitet površine, tj. na strukturne i mehaničke karakteristike odlivaka livenog gvožđa koji su dobijeni metodom livenja u peščane kalupe i pomoću isparljivih modela (Lost Foam metoda livenja).
AB  - In this work, a possibility to develop a new zircon-based refractory coating for casting applications was investigated. Optimization of the coating composition with controlled rheological properties was attained by application of different coating components, particularly by application of a new suspension agent and by alteration of coating production procedure. Zircon powder with particle size of 25×10-6 m was used as filler. The zircon sample was investigated by means of X-ray diffraction analysis, diffraction thermal analysis and polarized microscopy. The shape and grain size were analyzed using OZARIA 2.5 software. It was shown that application of this type of water-alcohol-based coating had a positive influence on surface quality, structural and mechanical properties of the castings of cast iron obtained by pouring into sand molds by means of the expandable patterns method (Lost Foam casting process).
PB  - Savez hemijskih inženjera, Beograd
T2  - Chemical Industry and Chemical Engineering Quarterly / CICEQ
T1  - Premazi na bazi cirkona sa primenom u Lost Foam procesu livenja
T1  - Zircon-based coating for the applications in Lost Foam casting process
EP  - 593
IS  - 4
SP  - 587
VL  - 18
DO  - 10.2298/CICEQ111122034P
ER  - 

@article{
author = "Prstić, Aurel and Aćimović-Pavlović, Zagorka and Andrić, Ljubiša and Stojanović, Jovica and Terzić, Anja",
year = "2012",
abstract = "U ovom radu je istraživana mogućnost dobijanja novih vatrostalnih premaza na bazi cirkona koji bi imali primenu u livarstvu. Optimizacija sastava premaza kontrolisana reološkim svojstvima postignuta je primenom različitih komponenata premaza, naročito primenom novog veziva na bazi suspenzije i variranjem načina spravljanja premaza. Čestice cirkonskoh praha veličine 25×10-6 m su korišćene kao ispuna. Uzorak cirkona ispitivan je pomoću sledećih metoda: difrakcija X-zraka, diferencijalna termalna analiza i mikroskopija. Oblik i veličina zrna su analizirani pomoću računarskog programa za analizu slike OZARIA 2.5. Pokazano je da primena ovih premaza na bazi vode i alkohola ima pozitivan uticaj na kvalitet površine, tj. na strukturne i mehaničke karakteristike odlivaka livenog gvožđa koji su dobijeni metodom livenja u peščane kalupe i pomoću isparljivih modela (Lost Foam metoda livenja)., In this work, a possibility to develop a new zircon-based refractory coating for casting applications was investigated. Optimization of the coating composition with controlled rheological properties was attained by application of different coating components, particularly by application of a new suspension agent and by alteration of coating production procedure. Zircon powder with particle size of 25×10-6 m was used as filler. The zircon sample was investigated by means of X-ray diffraction analysis, diffraction thermal analysis and polarized microscopy. The shape and grain size were analyzed using OZARIA 2.5 software. It was shown that application of this type of water-alcohol-based coating had a positive influence on surface quality, structural and mechanical properties of the castings of cast iron obtained by pouring into sand molds by means of the expandable patterns method (Lost Foam casting process).",
publisher = "Savez hemijskih inženjera, Beograd",
journal = "Chemical Industry and Chemical Engineering Quarterly / CICEQ",
title = "Premazi na bazi cirkona sa primenom u Lost Foam procesu livenja, Zircon-based coating for the applications in Lost Foam casting process",
pages = "593-587",
number = "4",
volume = "18",
doi = "10.2298/CICEQ111122034P"
}

Prstić, A., Aćimović-Pavlović, Z., Andrić, L., Stojanović, J.,& Terzić, A.. (2012). Premazi na bazi cirkona sa primenom u Lost Foam procesu livenja. in Chemical Industry and Chemical Engineering Quarterly / CICEQ
Savez hemijskih inženjera, Beograd., 18(4), 587-593.
https://doi.org/10.2298/CICEQ111122034P

Prstić A, Aćimović-Pavlović Z, Andrić L, Stojanović J, Terzić A. Premazi na bazi cirkona sa primenom u Lost Foam procesu livenja. in Chemical Industry and Chemical Engineering Quarterly / CICEQ. 2012;18(4):587-593.
doi:10.2298/CICEQ111122034P .

Prstić, Aurel, Aćimović-Pavlović, Zagorka, Andrić, Ljubiša, Stojanović, Jovica, Terzić, Anja, "Premazi na bazi cirkona sa primenom u Lost Foam procesu livenja" in Chemical Industry and Chemical Engineering Quarterly / CICEQ, 18, no. 4 (2012):587-593,
https://doi.org/10.2298/CICEQ111122034P . .