TY  - JOUR
AU  - Peles, A.
AU  - Pavlović, Vera P.
AU  - Filipović, Suzana
AU  - Obradović, N.
AU  - Mancić, L.
AU  - Krstić, J.
AU  - Mitrić, M.
AU  - Vlahović, Branislav
AU  - Rasić, G.
AU  - Kosanović, Darko
AU  - Pavlović, Vladimir
PY  - 2015
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3691
AB  - Commercially available ZnO powder was mechanically activated in a planetary ball mill. In order to investigate the specific surface area, pore volume and microstructure of non-activated and mechanically activated ZnO powders the authors performed N-2 physisorption, SEM and TEM. Crystallite size and lattice microstrain were analyzed by X-ray diffraction method. XRD patterns indicate that peak intensities are getting lower and expend with activation time. The reduction in crystallite size and increasing of lattice microstrain with prolonged milling time were determined applying the Rietveld's method. The difference between non-activated and the activated powder has been also observed by X-ray photoelectron spectroscopy (XPS). XPS is used for investigating the chemical bonding of ZnO powder by analyzing the energy of photoelectrons. The lattice vibration spectra were obtained using Raman spectroscopy. In Raman spectra some changes along with atypical resonant scattering were noticed, which were caused by mechanical activation.
PB  - Elsevier Science Sa, Lausanne
T2  - Journal of Alloys and Compounds
T1  - Structural investigation of mechanically activated ZnO powder
EP  - 979
SP  - 971
VL  - 648
DO  - 10.1016/j.jallcom.2015.06.247
ER  - 

@article{
author = "Peles, A. and Pavlović, Vera P. and Filipović, Suzana and Obradović, N. and Mancić, L. and Krstić, J. and Mitrić, M. and Vlahović, Branislav and Rasić, G. and Kosanović, Darko and Pavlović, Vladimir",
year = "2015",
abstract = "Commercially available ZnO powder was mechanically activated in a planetary ball mill. In order to investigate the specific surface area, pore volume and microstructure of non-activated and mechanically activated ZnO powders the authors performed N-2 physisorption, SEM and TEM. Crystallite size and lattice microstrain were analyzed by X-ray diffraction method. XRD patterns indicate that peak intensities are getting lower and expend with activation time. The reduction in crystallite size and increasing of lattice microstrain with prolonged milling time were determined applying the Rietveld's method. The difference between non-activated and the activated powder has been also observed by X-ray photoelectron spectroscopy (XPS). XPS is used for investigating the chemical bonding of ZnO powder by analyzing the energy of photoelectrons. The lattice vibration spectra were obtained using Raman spectroscopy. In Raman spectra some changes along with atypical resonant scattering were noticed, which were caused by mechanical activation.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Journal of Alloys and Compounds",
title = "Structural investigation of mechanically activated ZnO powder",
pages = "979-971",
volume = "648",
doi = "10.1016/j.jallcom.2015.06.247"
}

Peles, A., Pavlović, V. P., Filipović, S., Obradović, N., Mancić, L., Krstić, J., Mitrić, M., Vlahović, B., Rasić, G., Kosanović, D.,& Pavlović, V.. (2015). Structural investigation of mechanically activated ZnO powder. in Journal of Alloys and Compounds
Elsevier Science Sa, Lausanne., 648, 971-979.
https://doi.org/10.1016/j.jallcom.2015.06.247

Peles A, Pavlović VP, Filipović S, Obradović N, Mancić L, Krstić J, Mitrić M, Vlahović B, Rasić G, Kosanović D, Pavlović V. Structural investigation of mechanically activated ZnO powder. in Journal of Alloys and Compounds. 2015;648:971-979.
doi:10.1016/j.jallcom.2015.06.247 .

Peles, A., Pavlović, Vera P., Filipović, Suzana, Obradović, N., Mancić, L., Krstić, J., Mitrić, M., Vlahović, Branislav, Rasić, G., Kosanović, Darko, Pavlović, Vladimir, "Structural investigation of mechanically activated ZnO powder" in Journal of Alloys and Compounds, 648 (2015):971-979,
https://doi.org/10.1016/j.jallcom.2015.06.247 . .

TY  - JOUR
AU  - Filipović, Suzana
AU  - Obradović, N.
AU  - Pavlović, Vladimir
AU  - Kosanović, Darko
AU  - Mitrić, M.
AU  - Mitrović, N.
AU  - Pouchly, V.
AU  - Kachlik, Martin
AU  - Maca, Karel
PY  - 2014
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3438
AB  - In this article, the advantages of combined sintering in comparison with the conventional one, of mechanically activated magnesium titanate ceramic were investigated. The stoichiometric mixtures of MgO and TiO2 were mechano-chemically activated for 0, 10, 40, 80 and 160 minutes by ball milling and then isostatically pressed (CIP) to form green bodies. Conventional sintering was realized by heating up to 1400 degrees C and hold for 30 minutes in air atmosphere. Resulting ceramic samples with closed porosity were post-sintered by pressure assisted technique Hot Isostatic Pressing (HIP) at 1280 degrees C/3h in argon atmosphere with a pressure of 200 MPa. The best results were observed in the case of samples post-sintered by HIP, when single-phase MgTiO3 samples with relative density of 96% were prepared.
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - Advantages of Combined Sintering Compared to Conventional Sintering of Mechanically Activated Magnesium Titanate
EP  - 290
IS  - 3
SP  - 283
VL  - 46
DO  - 10.2298/SOS1403283F
ER  - 

@article{
author = "Filipović, Suzana and Obradović, N. and Pavlović, Vladimir and Kosanović, Darko and Mitrić, M. and Mitrović, N. and Pouchly, V. and Kachlik, Martin and Maca, Karel",
year = "2014",
abstract = "In this article, the advantages of combined sintering in comparison with the conventional one, of mechanically activated magnesium titanate ceramic were investigated. The stoichiometric mixtures of MgO and TiO2 were mechano-chemically activated for 0, 10, 40, 80 and 160 minutes by ball milling and then isostatically pressed (CIP) to form green bodies. Conventional sintering was realized by heating up to 1400 degrees C and hold for 30 minutes in air atmosphere. Resulting ceramic samples with closed porosity were post-sintered by pressure assisted technique Hot Isostatic Pressing (HIP) at 1280 degrees C/3h in argon atmosphere with a pressure of 200 MPa. The best results were observed in the case of samples post-sintered by HIP, when single-phase MgTiO3 samples with relative density of 96% were prepared.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "Advantages of Combined Sintering Compared to Conventional Sintering of Mechanically Activated Magnesium Titanate",
pages = "290-283",
number = "3",
volume = "46",
doi = "10.2298/SOS1403283F"
}

Filipović, S., Obradović, N., Pavlović, V., Kosanović, D., Mitrić, M., Mitrović, N., Pouchly, V., Kachlik, M.,& Maca, K.. (2014). Advantages of Combined Sintering Compared to Conventional Sintering of Mechanically Activated Magnesium Titanate. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 46(3), 283-290.
https://doi.org/10.2298/SOS1403283F

Filipović S, Obradović N, Pavlović V, Kosanović D, Mitrić M, Mitrović N, Pouchly V, Kachlik M, Maca K. Advantages of Combined Sintering Compared to Conventional Sintering of Mechanically Activated Magnesium Titanate. in Science of Sintering. 2014;46(3):283-290.
doi:10.2298/SOS1403283F .

Filipović, Suzana, Obradović, N., Pavlović, Vladimir, Kosanović, Darko, Mitrić, M., Mitrović, N., Pouchly, V., Kachlik, Martin, Maca, Karel, "Advantages of Combined Sintering Compared to Conventional Sintering of Mechanically Activated Magnesium Titanate" in Science of Sintering, 46, no. 3 (2014):283-290,
https://doi.org/10.2298/SOS1403283F . .

TY  - JOUR
AU  - Kosanović, Darko
AU  - Obradović, N.
AU  - Zivojinović, J.
AU  - Filipović, Suzana
AU  - Maricić, A.
AU  - Pavlović, Vladimir
AU  - Tang, Y.
AU  - Ristić, M.M.
PY  - 2012
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3040
AB  - Barium-Strontium-Titanate Ba0.77Sr0.23TiO3 was prepared from starting materials BaCO3, SrCO3 and TiO2 through solid-state reactions. Mixtures of these oxides are mechanically activated in a high-energy planetary ball mill at different time intervals from 0 to 120 minutes. In order to obtain information on phase composition, crystal structure was determent by X-ray diffraction. It was observed that after 80 minutes in process synthesis Ba0.77Sr0.23TiO3 started Thermal analyzes were performed in order to determine the characteristic temperatures of the processes that occur in the solid phase. Particle size distribution, together with electron microscopy scanning has given us very useful information about the morphology of the powder.
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - Mechanical-Chemical Synthesis Ba0.77Sr0.23TiO3
EP  - 55
IS  - 1
SP  - 47
VL  - 44
DO  - 10.2298/SOS1201047K
ER  - 

@article{
author = "Kosanović, Darko and Obradović, N. and Zivojinović, J. and Filipović, Suzana and Maricić, A. and Pavlović, Vladimir and Tang, Y. and Ristić, M.M.",
year = "2012",
abstract = "Barium-Strontium-Titanate Ba0.77Sr0.23TiO3 was prepared from starting materials BaCO3, SrCO3 and TiO2 through solid-state reactions. Mixtures of these oxides are mechanically activated in a high-energy planetary ball mill at different time intervals from 0 to 120 minutes. In order to obtain information on phase composition, crystal structure was determent by X-ray diffraction. It was observed that after 80 minutes in process synthesis Ba0.77Sr0.23TiO3 started Thermal analyzes were performed in order to determine the characteristic temperatures of the processes that occur in the solid phase. Particle size distribution, together with electron microscopy scanning has given us very useful information about the morphology of the powder.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "Mechanical-Chemical Synthesis Ba0.77Sr0.23TiO3",
pages = "55-47",
number = "1",
volume = "44",
doi = "10.2298/SOS1201047K"
}

Kosanović, D., Obradović, N., Zivojinović, J., Filipović, S., Maricić, A., Pavlović, V., Tang, Y.,& Ristić, M.M.. (2012). Mechanical-Chemical Synthesis Ba0.77Sr0.23TiO3. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 44(1), 47-55.
https://doi.org/10.2298/SOS1201047K

Kosanović D, Obradović N, Zivojinović J, Filipović S, Maricić A, Pavlović V, Tang Y, Ristić M. Mechanical-Chemical Synthesis Ba0.77Sr0.23TiO3. in Science of Sintering. 2012;44(1):47-55.
doi:10.2298/SOS1201047K .

Kosanović, Darko, Obradović, N., Zivojinović, J., Filipović, Suzana, Maricić, A., Pavlović, Vladimir, Tang, Y., Ristić, M.M., "Mechanical-Chemical Synthesis Ba0.77Sr0.23TiO3" in Science of Sintering, 44, no. 1 (2012):47-55,
https://doi.org/10.2298/SOS1201047K . .

TY  - JOUR
AU  - Obradović, N.
AU  - Nikolić, M.V.
AU  - Nikolić, N.
AU  - Filipović, Suzana
AU  - Mitrić, M.
AU  - Pavlović, Vladimir
AU  - Nikolić, P.M.
AU  - Djordjević, Antonije
AU  - Ristić, M.M.
PY  - 2012
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3052
AB  - Mixtures of BaCO3, ZnO and TiO2 powders, with molar ratio of 1:2:4, were mechanically activated for 20, 40 and minutes in a planetary ball mill. The resulting powders were compacted into pellets and isothermally sintered at 1250 degrees C for 2h with a heating rate of 10 degrees C/min. X-ray diffraction analysis of obtained powders and sintered samples was performed in order to investigate changes of the phase composition. The microstructure of sintered samples was examined by scanning electron microscopy. The photoacoustic phase and amplitude spectra of sintered samples were measured as a function of the laser beam modulating frequency using a transmission detection configuration. Fitting of experimental data enabled determination of photoacoustic properties including thermal diffusivity. Based on the results obtained correlation between thermal diffusivity and experimental conditions, as well the samples microstructure characteristics, was discussed.
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - Synthesis of Barium-zinc-titanate Ceramics
EP  - 71
IS  - 1
SP  - 65
VL  - 44
DO  - 10.2298/SOS1201065O
ER  - 

@article{
author = "Obradović, N. and Nikolić, M.V. and Nikolić, N. and Filipović, Suzana and Mitrić, M. and Pavlović, Vladimir and Nikolić, P.M. and Djordjević, Antonije and Ristić, M.M.",
year = "2012",
abstract = "Mixtures of BaCO3, ZnO and TiO2 powders, with molar ratio of 1:2:4, were mechanically activated for 20, 40 and minutes in a planetary ball mill. The resulting powders were compacted into pellets and isothermally sintered at 1250 degrees C for 2h with a heating rate of 10 degrees C/min. X-ray diffraction analysis of obtained powders and sintered samples was performed in order to investigate changes of the phase composition. The microstructure of sintered samples was examined by scanning electron microscopy. The photoacoustic phase and amplitude spectra of sintered samples were measured as a function of the laser beam modulating frequency using a transmission detection configuration. Fitting of experimental data enabled determination of photoacoustic properties including thermal diffusivity. Based on the results obtained correlation between thermal diffusivity and experimental conditions, as well the samples microstructure characteristics, was discussed.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "Synthesis of Barium-zinc-titanate Ceramics",
pages = "71-65",
number = "1",
volume = "44",
doi = "10.2298/SOS1201065O"
}

Obradović, N., Nikolić, M.V., Nikolić, N., Filipović, S., Mitrić, M., Pavlović, V., Nikolić, P.M., Djordjević, A.,& Ristić, M.M.. (2012). Synthesis of Barium-zinc-titanate Ceramics. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 44(1), 65-71.
https://doi.org/10.2298/SOS1201065O

Obradović N, Nikolić M, Nikolić N, Filipović S, Mitrić M, Pavlović V, Nikolić P, Djordjević A, Ristić M. Synthesis of Barium-zinc-titanate Ceramics. in Science of Sintering. 2012;44(1):65-71.
doi:10.2298/SOS1201065O .

Obradović, N., Nikolić, M.V., Nikolić, N., Filipović, Suzana, Mitrić, M., Pavlović, Vladimir, Nikolić, P.M., Djordjević, Antonije, Ristić, M.M., "Synthesis of Barium-zinc-titanate Ceramics" in Science of Sintering, 44, no. 1 (2012):65-71,
https://doi.org/10.2298/SOS1201065O . .

TY  - JOUR
AU  - Kosanović, Darko
AU  - Obradović, N.
AU  - Zivojinović, J.
AU  - Maricić, A.
AU  - Pavlović, Vera P.
AU  - Pavlović, Vladimir
AU  - Ristić, M.M.
PY  - 2012
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3050
AB  - In this article the influence of mechanical activation on sintering process of barium-strontium-titanate ceramics has been investigated. Both non-activated and mixtures treated in a planetary ball mill for 5, 10, 20, 40, 80 and 120 minutes were sintered at 1100-1400 degrees C for 2 hours in presence of air atmosphere. The influence of mechanical activation on phase composition and crystal structure has been analyzed by XRD, while the effect of activation and sintering process on microstructure was investigated by scanning electron microscopy. It has been established that temperature of 1100 degrees C was too low to induce final sintering stage for this system. Electrical measurements have been conducted for the densest ceramics sintered at 1400 degrees C for 2 hours.
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - The Influence of Mechanical Activation on Sintering Process of BaCO3-SrCO3-TiO2 System
EP  - 280
IS  - 3
SP  - 271
VL  - 44
DO  - 10.2298/SOS1203271K
ER  - 

@article{
author = "Kosanović, Darko and Obradović, N. and Zivojinović, J. and Maricić, A. and Pavlović, Vera P. and Pavlović, Vladimir and Ristić, M.M.",
year = "2012",
abstract = "In this article the influence of mechanical activation on sintering process of barium-strontium-titanate ceramics has been investigated. Both non-activated and mixtures treated in a planetary ball mill for 5, 10, 20, 40, 80 and 120 minutes were sintered at 1100-1400 degrees C for 2 hours in presence of air atmosphere. The influence of mechanical activation on phase composition and crystal structure has been analyzed by XRD, while the effect of activation and sintering process on microstructure was investigated by scanning electron microscopy. It has been established that temperature of 1100 degrees C was too low to induce final sintering stage for this system. Electrical measurements have been conducted for the densest ceramics sintered at 1400 degrees C for 2 hours.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "The Influence of Mechanical Activation on Sintering Process of BaCO3-SrCO3-TiO2 System",
pages = "280-271",
number = "3",
volume = "44",
doi = "10.2298/SOS1203271K"
}

Kosanović, D., Obradović, N., Zivojinović, J., Maricić, A., Pavlović, V. P., Pavlović, V.,& Ristić, M.M.. (2012). The Influence of Mechanical Activation on Sintering Process of BaCO3-SrCO3-TiO2 System. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 44(3), 271-280.
https://doi.org/10.2298/SOS1203271K

Kosanović D, Obradović N, Zivojinović J, Maricić A, Pavlović VP, Pavlović V, Ristić M. The Influence of Mechanical Activation on Sintering Process of BaCO3-SrCO3-TiO2 System. in Science of Sintering. 2012;44(3):271-280.
doi:10.2298/SOS1203271K .

Kosanović, Darko, Obradović, N., Zivojinović, J., Maricić, A., Pavlović, Vera P., Pavlović, Vladimir, Ristić, M.M., "The Influence of Mechanical Activation on Sintering Process of BaCO3-SrCO3-TiO2 System" in Science of Sintering, 44, no. 3 (2012):271-280,
https://doi.org/10.2298/SOS1203271K . .

TY  - JOUR
AU  - Filipović, Suzana
AU  - Obradović, N.
AU  - Pavlović, Vladimir
AU  - Marković, S.
AU  - Mitrić, M.
AU  - Ristić, M.M.
PY  - 2010
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2352
AB  - Mixtures of MgO-TiO2 were mechanically activated using high-energy planetary ball mill during 5, 10, 20, 40, 80 and 120 minutes. Sintering process was preformed in air at 1100°-1400°C for 2h. The decrease in powder's particle size was noticed as the time of mechanical activation increased and confirmed by particle size analyzer. XRD analyses were performed in order to acquire the information about phase composition. Different ratio mixtures of MgTiO3 and Mg2TiO4 are present within all sintered samples. The effect of tribophysical activation on microstructure was investigated by scanning electron microscopy. The differential thermal gravimetric analysis has been performed in order to investigate thermal behaviour of the mixtures.
AB  - Smeše MgO-TiO2 su mehanički aktivirane u visoko-energetskom planetarnom mlinu tokom 5, 10, 20, 40, 80 i 120 minuta. Fazni sastav je određen rendgenskom difrakcijom. Sa porastom vremena mlevenja, primećeno je smanjenje veličine čestica praha. Takođe, ispitan je i efekat tribofizičke aktivacije na mikrostrukturu praha metodom skenirajuće elektronske mikroskopije. Radi ispitivanja termičkih svojstava praha, urađena je diferencijalna termijska analiza. Proces sinterovanja izveden je u vazduhu u temperaturnom opsegu od 1100°-1400°C tokom 2 sata. U svim sinterovanim uzorcima uočeno je prisustvo dve faze MgTiO3 i Mg2TiO4 ali njihov međusobni odnos koncentracija varira u odnosu na temperaturu sinterovanja.
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - Influence of mechanical activation on microstructure and crystal structure of sintered MgO-TiO2 system
EP  - 151
IS  - 2
SP  - 143
VL  - 42
DO  - 10.2298/SOS100518002F
ER  - 

@article{
author = "Filipović, Suzana and Obradović, N. and Pavlović, Vladimir and Marković, S. and Mitrić, M. and Ristić, M.M.",
year = "2010",
abstract = "Mixtures of MgO-TiO2 were mechanically activated using high-energy planetary ball mill during 5, 10, 20, 40, 80 and 120 minutes. Sintering process was preformed in air at 1100°-1400°C for 2h. The decrease in powder's particle size was noticed as the time of mechanical activation increased and confirmed by particle size analyzer. XRD analyses were performed in order to acquire the information about phase composition. Different ratio mixtures of MgTiO3 and Mg2TiO4 are present within all sintered samples. The effect of tribophysical activation on microstructure was investigated by scanning electron microscopy. The differential thermal gravimetric analysis has been performed in order to investigate thermal behaviour of the mixtures., Smeše MgO-TiO2 su mehanički aktivirane u visoko-energetskom planetarnom mlinu tokom 5, 10, 20, 40, 80 i 120 minuta. Fazni sastav je određen rendgenskom difrakcijom. Sa porastom vremena mlevenja, primećeno je smanjenje veličine čestica praha. Takođe, ispitan je i efekat tribofizičke aktivacije na mikrostrukturu praha metodom skenirajuće elektronske mikroskopije. Radi ispitivanja termičkih svojstava praha, urađena je diferencijalna termijska analiza. Proces sinterovanja izveden je u vazduhu u temperaturnom opsegu od 1100°-1400°C tokom 2 sata. U svim sinterovanim uzorcima uočeno je prisustvo dve faze MgTiO3 i Mg2TiO4 ali njihov međusobni odnos koncentracija varira u odnosu na temperaturu sinterovanja.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "Influence of mechanical activation on microstructure and crystal structure of sintered MgO-TiO2 system",
pages = "151-143",
number = "2",
volume = "42",
doi = "10.2298/SOS100518002F"
}

Filipović, S., Obradović, N., Pavlović, V., Marković, S., Mitrić, M.,& Ristić, M.M.. (2010). Influence of mechanical activation on microstructure and crystal structure of sintered MgO-TiO2 system. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 42(2), 143-151.
https://doi.org/10.2298/SOS100518002F

Filipović S, Obradović N, Pavlović V, Marković S, Mitrić M, Ristić M. Influence of mechanical activation on microstructure and crystal structure of sintered MgO-TiO2 system. in Science of Sintering. 2010;42(2):143-151.
doi:10.2298/SOS100518002F .

Filipović, Suzana, Obradović, N., Pavlović, Vladimir, Marković, S., Mitrić, M., Ristić, M.M., "Influence of mechanical activation on microstructure and crystal structure of sintered MgO-TiO2 system" in Science of Sintering, 42, no. 2 (2010):143-151,
https://doi.org/10.2298/SOS100518002F . .