Živojinović, Jelena

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  • Živojinović, Jelena (6)
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Author's Bibliography

Dielectric Properties of Mechanically Activated Strontium Titanate Ceramics

Živojinović, Jelena; Kosanović, Darko; Blagojević, Vladimir A.; Pavlović, Vera P.; Tadić, Nenad; Vlahović, Branislav; Pavlović, Vladimir B.

(ETRAN, 2022)

TY  - JOUR
AU  - Živojinović, Jelena
AU  - Kosanović, Darko
AU  - Blagojević, Vladimir A.
AU  - Pavlović, Vera P.
AU  - Tadić, Nenad
AU  - Vlahović, Branislav
AU  - Pavlović, Vladimir B.
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4201
AB  - In this study, microstructure evolution and dielectric properties of SrTiO3 ceramic have been investigated, whereby mechanical activation of SrTiO3 powders was used to modify the functional properties of ceramic materials. Microstructural SEM analysis of SrTiO3 ceramics showed that the increase in mechanical activation time results in less porous samples. Raman spectroscopy indicated changes in the broadening and asymmetry of the TO2 mode with a change in the time of mechanical activation. TO2 mode showed a Fano asymmetry due to its interaction with polarization fluctuations in polar micro-regions, which are a consequence of the presence of oxygen vacancies caused by activation. The maximum value of dielectric permittivity was observed in the sample activated for 10 min. Also, the sample activated for 10 min exhibits relatively low values of loss tangent, compared to the other mechanically activated samples, providing the best overall dielectric performance compared to other samples.
PB  - ETRAN
T2  - Science of Sintering
T1  - Dielectric Properties of Mechanically Activated Strontium Titanate Ceramics
EP  - 414
IS  - 4
SP  - 401
VL  - 54
DO  - 10.2298/SOS2204401Z
ER  - 
@article{
author = "Živojinović, Jelena and Kosanović, Darko and Blagojević, Vladimir A. and Pavlović, Vera P. and Tadić, Nenad and Vlahović, Branislav and Pavlović, Vladimir B.",
year = "2022",
abstract = "In this study, microstructure evolution and dielectric properties of SrTiO3 ceramic have been investigated, whereby mechanical activation of SrTiO3 powders was used to modify the functional properties of ceramic materials. Microstructural SEM analysis of SrTiO3 ceramics showed that the increase in mechanical activation time results in less porous samples. Raman spectroscopy indicated changes in the broadening and asymmetry of the TO2 mode with a change in the time of mechanical activation. TO2 mode showed a Fano asymmetry due to its interaction with polarization fluctuations in polar micro-regions, which are a consequence of the presence of oxygen vacancies caused by activation. The maximum value of dielectric permittivity was observed in the sample activated for 10 min. Also, the sample activated for 10 min exhibits relatively low values of loss tangent, compared to the other mechanically activated samples, providing the best overall dielectric performance compared to other samples.",
publisher = "ETRAN",
journal = "Science of Sintering",
title = "Dielectric Properties of Mechanically Activated Strontium Titanate Ceramics",
pages = "414-401",
number = "4",
volume = "54",
doi = "10.2298/SOS2204401Z"
}
Živojinović, J., Kosanović, D., Blagojević, V. A., Pavlović, V. P., Tadić, N., Vlahović, B.,& Pavlović, V. B.. (2022). Dielectric Properties of Mechanically Activated Strontium Titanate Ceramics. in Science of Sintering
ETRAN., 54(4), 401-414.
https://doi.org/10.2298/SOS2204401Z
Živojinović J, Kosanović D, Blagojević VA, Pavlović VP, Tadić N, Vlahović B, Pavlović VB. Dielectric Properties of Mechanically Activated Strontium Titanate Ceramics. in Science of Sintering. 2022;54(4):401-414.
doi:10.2298/SOS2204401Z .
Živojinović, Jelena, Kosanović, Darko, Blagojević, Vladimir A., Pavlović, Vera P., Tadić, Nenad, Vlahović, Branislav, Pavlović, Vladimir B., "Dielectric Properties of Mechanically Activated Strontium Titanate Ceramics" in Science of Sintering, 54, no. 4 (2022):401-414,
https://doi.org/10.2298/SOS2204401Z . .
3
3

The influence of mechanical activation on microstructure and dielectric properties of SrTiO3 ceramics

Živojinović, Jelena; Blagojević, Vladimir A.; Pavlović, Vera P.; Kosanović, Darko; Tadić, Nenad; Pavlović, Vladimir B.

(Innovation Center of Faculty of Mechanical Engineering, Belgrade, 2021)

TY  - CONF
AU  - Živojinović, Jelena
AU  - Blagojević, Vladimir A.
AU  - Pavlović, Vera P.
AU  - Kosanović, Darko
AU  - Tadić, Nenad
AU  - Pavlović, Vladimir B.
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4224
AB  - In recent years, a lot of interest has been shown in obtaining materials with predetermined properties. The aim is to establish a functional dependence between the synthesis parameters, structural characteristics, and properties of the material. Ceramic materials based on strontium titanate (SrTiO3) are of special interest due to their unique physical-chemical properties. Having in mind the importance of examining the influence of synthesis parameters on the process of obtaining and properties of functional electroceramic materials, and the importance of SrTiO3 as a perovskite material, the motive was to analyze and consider the influence of mechanical activation. It has been established that the time of mechanical activation (0, 10, 30, 60, 90, and 120 minutes) of SrTiO3 powders indirectly affects on electrical properties of SrTiO3 ceramics. It was noticed that in SrTiO3 ceramics the values of relative dielectric permittivity in the radio frequency range (0,3 MHz - 3 GHz) are stable, which is important for the fabrication of electronic components. Microstructural SEM analysis showed that the increase in mechanical activation time results in less porous samples. It was found that the value of the relative dielectric permittivity of ceramic samples at room temperature changes following the combined effect of changes in sample density, grain size, as well as changes in the grain boundary region. The maximum value of dielectric permittivity was observed in the sample activated for 10 minutes. Also, the sample activated for 10 min exhibits relatively low values of loss tangent, compared to the other mechanically activated samples, providing the best overall dielectric performance compared to other samples.
PB  - Innovation Center of Faculty of Mechanical Engineering, Belgrade
C3  - Programme and The Book of Abstracts - International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021, 29 June - 02 July 2021, Zlatibor, Serbia
T1  - The influence of mechanical activation on microstructure and dielectric properties of SrTiO3 ceramics
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4224
ER  - 
@conference{
author = "Živojinović, Jelena and Blagojević, Vladimir A. and Pavlović, Vera P. and Kosanović, Darko and Tadić, Nenad and Pavlović, Vladimir B.",
year = "2021",
abstract = "In recent years, a lot of interest has been shown in obtaining materials with predetermined properties. The aim is to establish a functional dependence between the synthesis parameters, structural characteristics, and properties of the material. Ceramic materials based on strontium titanate (SrTiO3) are of special interest due to their unique physical-chemical properties. Having in mind the importance of examining the influence of synthesis parameters on the process of obtaining and properties of functional electroceramic materials, and the importance of SrTiO3 as a perovskite material, the motive was to analyze and consider the influence of mechanical activation. It has been established that the time of mechanical activation (0, 10, 30, 60, 90, and 120 minutes) of SrTiO3 powders indirectly affects on electrical properties of SrTiO3 ceramics. It was noticed that in SrTiO3 ceramics the values of relative dielectric permittivity in the radio frequency range (0,3 MHz - 3 GHz) are stable, which is important for the fabrication of electronic components. Microstructural SEM analysis showed that the increase in mechanical activation time results in less porous samples. It was found that the value of the relative dielectric permittivity of ceramic samples at room temperature changes following the combined effect of changes in sample density, grain size, as well as changes in the grain boundary region. The maximum value of dielectric permittivity was observed in the sample activated for 10 minutes. Also, the sample activated for 10 min exhibits relatively low values of loss tangent, compared to the other mechanically activated samples, providing the best overall dielectric performance compared to other samples.",
publisher = "Innovation Center of Faculty of Mechanical Engineering, Belgrade",
journal = "Programme and The Book of Abstracts - International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021, 29 June - 02 July 2021, Zlatibor, Serbia",
title = "The influence of mechanical activation on microstructure and dielectric properties of SrTiO3 ceramics",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4224"
}
Živojinović, J., Blagojević, V. A., Pavlović, V. P., Kosanović, D., Tadić, N.,& Pavlović, V. B.. (2021). The influence of mechanical activation on microstructure and dielectric properties of SrTiO3 ceramics. in Programme and The Book of Abstracts - International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021, 29 June - 02 July 2021, Zlatibor, Serbia
Innovation Center of Faculty of Mechanical Engineering, Belgrade..
https://hdl.handle.net/21.15107/rcub_machinery_4224
Živojinović J, Blagojević VA, Pavlović VP, Kosanović D, Tadić N, Pavlović VB. The influence of mechanical activation on microstructure and dielectric properties of SrTiO3 ceramics. in Programme and The Book of Abstracts - International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021, 29 June - 02 July 2021, Zlatibor, Serbia. 2021;.
https://hdl.handle.net/21.15107/rcub_machinery_4224 .
Živojinović, Jelena, Blagojević, Vladimir A., Pavlović, Vera P., Kosanović, Darko, Tadić, Nenad, Pavlović, Vladimir B., "The influence of mechanical activation on microstructure and dielectric properties of SrTiO3 ceramics" in Programme and The Book of Abstracts - International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021, 29 June - 02 July 2021, Zlatibor, Serbia (2021),
https://hdl.handle.net/21.15107/rcub_machinery_4224 .

Analysis of the Initial-Stage Sintering of Mechanically Activated SrTiO3

Živojinović, Jelena; Pavlović, Vera P.; Labus, Nebojša J.; Blagojević, Vladimir A.; Kosanović, Darko; Pavlović, Vladimir B.

(ETRAN, Beograd, 2019)

TY  - JOUR
AU  - Živojinović, Jelena
AU  - Pavlović, Vera P.
AU  - Labus, Nebojša J.
AU  - Blagojević, Vladimir A.
AU  - Kosanović, Darko
AU  - Pavlović, Vladimir B.
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3162
AB  - The initial-stage of sintering plays a significant role in determining the final microstructure that defines the main characteristics of electroceramics materials such as functional properties. In this article non-isothermal sintering of non-activated and mechanically activated SrTiO3 samples was investigated up to 1300 degrees C. Dilatometric curves indicate that mechanical activation leads to an earlier onset of sintering, suggesting that it should lead to a more homogenous and denser sintered product. Analysis of the initial stage of sintering reveals that the sintering process of all examinated samples consists of two or three overlapping single-step processes, with a change in the dominant mass transport mechanism. The values of apparent activation energy of the considered single-step process exhibit a significant decrease with an increase in mechanical activation time. The values of the density of samples after isothermal sintering indicate that the final stage of sintering has not been reached by 1300 degrees C.
PB  - ETRAN, Beograd
T2  - Science of Sintering
T1  - Analysis of the Initial-Stage Sintering of Mechanically Activated SrTiO3
EP  - 208
IS  - 2
SP  - 199
VL  - 51
DO  - 10.2298/SOS1902199Z
ER  - 
@article{
author = "Živojinović, Jelena and Pavlović, Vera P. and Labus, Nebojša J. and Blagojević, Vladimir A. and Kosanović, Darko and Pavlović, Vladimir B.",
year = "2019",
abstract = "The initial-stage of sintering plays a significant role in determining the final microstructure that defines the main characteristics of electroceramics materials such as functional properties. In this article non-isothermal sintering of non-activated and mechanically activated SrTiO3 samples was investigated up to 1300 degrees C. Dilatometric curves indicate that mechanical activation leads to an earlier onset of sintering, suggesting that it should lead to a more homogenous and denser sintered product. Analysis of the initial stage of sintering reveals that the sintering process of all examinated samples consists of two or three overlapping single-step processes, with a change in the dominant mass transport mechanism. The values of apparent activation energy of the considered single-step process exhibit a significant decrease with an increase in mechanical activation time. The values of the density of samples after isothermal sintering indicate that the final stage of sintering has not been reached by 1300 degrees C.",
publisher = "ETRAN, Beograd",
journal = "Science of Sintering",
title = "Analysis of the Initial-Stage Sintering of Mechanically Activated SrTiO3",
pages = "208-199",
number = "2",
volume = "51",
doi = "10.2298/SOS1902199Z"
}
Živojinović, J., Pavlović, V. P., Labus, N. J., Blagojević, V. A., Kosanović, D.,& Pavlović, V. B.. (2019). Analysis of the Initial-Stage Sintering of Mechanically Activated SrTiO3. in Science of Sintering
ETRAN, Beograd., 51(2), 199-208.
https://doi.org/10.2298/SOS1902199Z
Živojinović J, Pavlović VP, Labus NJ, Blagojević VA, Kosanović D, Pavlović VB. Analysis of the Initial-Stage Sintering of Mechanically Activated SrTiO3. in Science of Sintering. 2019;51(2):199-208.
doi:10.2298/SOS1902199Z .
Živojinović, Jelena, Pavlović, Vera P., Labus, Nebojša J., Blagojević, Vladimir A., Kosanović, Darko, Pavlović, Vladimir B., "Analysis of the Initial-Stage Sintering of Mechanically Activated SrTiO3" in Science of Sintering, 51, no. 2 (2019):199-208,
https://doi.org/10.2298/SOS1902199Z . .
2
4
5

The influence of mechanical activation on structural evolution of nanocrystalline SrTiO3 powders

Živojinović, Jelena; Pavlović, Vera P.; Kosanović, Darko; Marković, Smilja; Krstić, Jugoslav B.; Blagojević, Vladimir A.; Pavlović, Vladimir B.

(Elsevier Science Sa, Lausanne, 2017)

TY  - JOUR
AU  - Živojinović, Jelena
AU  - Pavlović, Vera P.
AU  - Kosanović, Darko
AU  - Marković, Smilja
AU  - Krstić, Jugoslav B.
AU  - Blagojević, Vladimir A.
AU  - Pavlović, Vladimir B.
PY  - 2017
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2540
AB  - Structural changes caused by mechanical activation of SrTiO3 powders were investigated using a variety of methods. Average crystallite size continuously decreased with increased activation time to around 20 nm after 120 min activation, while mesopore volume and specific surface area increased accordingly. Higher activation times lead to increased agglomeration of nanoparticles to form agglomerates of around 2 mu m in size, ultimately producing a relatively stable powder, which exhibits lower microstrain than powders activated for shorter periods of time. Raman spectroscopy shows that the behavior of TO2 and TO4 modes is consistent with a decrease in particle size, while behavior of the nonpolar TO3 mode is markedly different, indicating relaxation of the inversion symmetry in polycrystalline SrTiO3. UV-VIS spectra show that mechanical activation has negligible effect on SrTiO3, with a slight shift caused by TiO2 contamination due to presence of air. Other than this, the mechanical activation process preserves the chemical purity of the initial powder.
PB  - Elsevier Science Sa, Lausanne
T2  - Journal of Alloys and Compounds
T1  - The influence of mechanical activation on structural evolution of nanocrystalline SrTiO3 powders
EP  - 870
SP  - 863
VL  - 695
DO  - 10.1016/j.jallcom.2016.10.159
ER  - 
@article{
author = "Živojinović, Jelena and Pavlović, Vera P. and Kosanović, Darko and Marković, Smilja and Krstić, Jugoslav B. and Blagojević, Vladimir A. and Pavlović, Vladimir B.",
year = "2017",
abstract = "Structural changes caused by mechanical activation of SrTiO3 powders were investigated using a variety of methods. Average crystallite size continuously decreased with increased activation time to around 20 nm after 120 min activation, while mesopore volume and specific surface area increased accordingly. Higher activation times lead to increased agglomeration of nanoparticles to form agglomerates of around 2 mu m in size, ultimately producing a relatively stable powder, which exhibits lower microstrain than powders activated for shorter periods of time. Raman spectroscopy shows that the behavior of TO2 and TO4 modes is consistent with a decrease in particle size, while behavior of the nonpolar TO3 mode is markedly different, indicating relaxation of the inversion symmetry in polycrystalline SrTiO3. UV-VIS spectra show that mechanical activation has negligible effect on SrTiO3, with a slight shift caused by TiO2 contamination due to presence of air. Other than this, the mechanical activation process preserves the chemical purity of the initial powder.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Journal of Alloys and Compounds",
title = "The influence of mechanical activation on structural evolution of nanocrystalline SrTiO3 powders",
pages = "870-863",
volume = "695",
doi = "10.1016/j.jallcom.2016.10.159"
}
Živojinović, J., Pavlović, V. P., Kosanović, D., Marković, S., Krstić, J. B., Blagojević, V. A.,& Pavlović, V. B.. (2017). The influence of mechanical activation on structural evolution of nanocrystalline SrTiO3 powders. in Journal of Alloys and Compounds
Elsevier Science Sa, Lausanne., 695, 863-870.
https://doi.org/10.1016/j.jallcom.2016.10.159
Živojinović J, Pavlović VP, Kosanović D, Marković S, Krstić JB, Blagojević VA, Pavlović VB. The influence of mechanical activation on structural evolution of nanocrystalline SrTiO3 powders. in Journal of Alloys and Compounds. 2017;695:863-870.
doi:10.1016/j.jallcom.2016.10.159 .
Živojinović, Jelena, Pavlović, Vera P., Kosanović, Darko, Marković, Smilja, Krstić, Jugoslav B., Blagojević, Vladimir A., Pavlović, Vladimir B., "The influence of mechanical activation on structural evolution of nanocrystalline SrTiO3 powders" in Journal of Alloys and Compounds, 695 (2017):863-870,
https://doi.org/10.1016/j.jallcom.2016.10.159 . .
22
13
24

The influence of mechanical activation on the electrical properties of Ba0.77Sr0.23TiO3 ceramics

Kosanović, Darko; Živojinović, Jelena; Obradović, Nina; Pavlović, Vera P.; Pavlović, Vladimir B.; Peleš, Adriana; Ristić, Momčilo M.

(Elsevier Sci Ltd, Oxford, 2014)

TY  - JOUR
AU  - Kosanović, Darko
AU  - Živojinović, Jelena
AU  - Obradović, Nina
AU  - Pavlović, Vera P.
AU  - Pavlović, Vladimir B.
AU  - Peleš, Adriana
AU  - Ristić, Momčilo M.
PY  - 2014
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1918
AB  - Ferroelectric barium strontium titanate (Ba0.77Sr0.23TiO3), BST, was prepared by solid-state reactions using as the starting compounds powder of barium carbonate (BaCO3), strontium carbonate (SrCO3) and titanium dioxide (TiO2–anatase). Non-activated mixtures and mixtures mechanically activated in a high-energy planetary ball mill (0, 5, 10, 20, 40, 80 and 120 min) were sintered at 1100, 1200, 1300 and 1400 °C for 2 h in air atmosphere. Defects and the effect of the beginning of the sintering process on the microstructure were investigated by scanning electron microscopy (SEM). Electrical measurements (loss tangent and resistivity as the function of frequency XC=f(log ν)) were performed for ceramics sintered at 1400 °C for 2 h. It has been found that mechanical activation can reduce the sintering temperature by around 100 °C, which leads to significant energy savings. Furthermore, activated for 80 min and sintered at 1400 °C for 2 h exhibit the largest density values and have about 36% lower dielectric loss at a frequency of 1 kHz and about 57% at a frequency of 10 kHz than the samples obtained from the initial non-activated powder sintered under the same conditions.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - The influence of mechanical activation on the electrical properties of Ba0.77Sr0.23TiO3 ceramics
EP  - 11888
IS  - 8
SP  - 11883
VL  - 40
DO  - 10.1016/j.ceramint.2014.04.023
ER  - 
@article{
author = "Kosanović, Darko and Živojinović, Jelena and Obradović, Nina and Pavlović, Vera P. and Pavlović, Vladimir B. and Peleš, Adriana and Ristić, Momčilo M.",
year = "2014",
abstract = "Ferroelectric barium strontium titanate (Ba0.77Sr0.23TiO3), BST, was prepared by solid-state reactions using as the starting compounds powder of barium carbonate (BaCO3), strontium carbonate (SrCO3) and titanium dioxide (TiO2–anatase). Non-activated mixtures and mixtures mechanically activated in a high-energy planetary ball mill (0, 5, 10, 20, 40, 80 and 120 min) were sintered at 1100, 1200, 1300 and 1400 °C for 2 h in air atmosphere. Defects and the effect of the beginning of the sintering process on the microstructure were investigated by scanning electron microscopy (SEM). Electrical measurements (loss tangent and resistivity as the function of frequency XC=f(log ν)) were performed for ceramics sintered at 1400 °C for 2 h. It has been found that mechanical activation can reduce the sintering temperature by around 100 °C, which leads to significant energy savings. Furthermore, activated for 80 min and sintered at 1400 °C for 2 h exhibit the largest density values and have about 36% lower dielectric loss at a frequency of 1 kHz and about 57% at a frequency of 10 kHz than the samples obtained from the initial non-activated powder sintered under the same conditions.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "The influence of mechanical activation on the electrical properties of Ba0.77Sr0.23TiO3 ceramics",
pages = "11888-11883",
number = "8",
volume = "40",
doi = "10.1016/j.ceramint.2014.04.023"
}
Kosanović, D., Živojinović, J., Obradović, N., Pavlović, V. P., Pavlović, V. B., Peleš, A.,& Ristić, M. M.. (2014). The influence of mechanical activation on the electrical properties of Ba0.77Sr0.23TiO3 ceramics. in Ceramics International
Elsevier Sci Ltd, Oxford., 40(8), 11883-11888.
https://doi.org/10.1016/j.ceramint.2014.04.023
Kosanović D, Živojinović J, Obradović N, Pavlović VP, Pavlović VB, Peleš A, Ristić MM. The influence of mechanical activation on the electrical properties of Ba0.77Sr0.23TiO3 ceramics. in Ceramics International. 2014;40(8):11883-11888.
doi:10.1016/j.ceramint.2014.04.023 .
Kosanović, Darko, Živojinović, Jelena, Obradović, Nina, Pavlović, Vera P., Pavlović, Vladimir B., Peleš, Adriana, Ristić, Momčilo M., "The influence of mechanical activation on the electrical properties of Ba0.77Sr0.23TiO3 ceramics" in Ceramics International, 40, no. 8 (2014):11883-11888,
https://doi.org/10.1016/j.ceramint.2014.04.023 . .
5
5
7

The influence of mechanical activation on sintering process of BaCO3-SrCO3-TiO2 system

Kosanović, Darko; Obradović, Nina; Živojinović, Jelena; Maričić, Aleksa; Pavlović, Vera P.; Pavlović, Vladimir B.; Ristić, Momčilo M.

(Međunarodni Institut za nauku o sinterovanju, Beograd, 2012)

TY  - JOUR
AU  - Kosanović, Darko
AU  - Obradović, Nina
AU  - Živojinović, Jelena
AU  - Maričić, Aleksa
AU  - Pavlović, Vera P.
AU  - Pavlović, Vladimir B.
AU  - Ristić, Momčilo M.
PY  - 2012
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1496
AB  - U ovom radu proučavan je uticaj mehaničke aktivacije na proces sinterovanja barijum-stroncijum-titanatne keramike. Neaktivirana i mehanički akativirane smeše (u temperatuskom intervalu 5 - 120 minuta) u visoko- energetskom planetarnom mlinu sinterovane su na 1100 - 1400°C dva sata u atmosferi vazduha. Uticaj mehaničke aktivacije na fazni sastav i kristalnu strukturu je analiziran pomoću rendgenske difrakcije, dok je defekat aktivacije i proces sinterovanja na mikrostrukturu ispitivan skenirajućom elektronskom mikroskopijom. Utvrđeno je da je temperatura od 1100°C bila isuviše niska da se podstakne završna faza sinterovanja za ovaj sistem. Električna merenja su sprovedena za najgušće keramike sinterovane na 1400°C dva sata.
AB  - In this article the influence of mechanical activation on sintering process of bariumstrontium-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°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°C was too low to induce final sintering stage for this system. Electrical measurements have been conducted for the densest ceramics sintered at 1400°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, Nina and Živojinović, Jelena and Maričić, Aleksa and Pavlović, Vera P. and Pavlović, Vladimir B. and Ristić, Momčilo M.",
year = "2012",
abstract = "U ovom radu proučavan je uticaj mehaničke aktivacije na proces sinterovanja barijum-stroncijum-titanatne keramike. Neaktivirana i mehanički akativirane smeše (u temperatuskom intervalu 5 - 120 minuta) u visoko- energetskom planetarnom mlinu sinterovane su na 1100 - 1400°C dva sata u atmosferi vazduha. Uticaj mehaničke aktivacije na fazni sastav i kristalnu strukturu je analiziran pomoću rendgenske difrakcije, dok je defekat aktivacije i proces sinterovanja na mikrostrukturu ispitivan skenirajućom elektronskom mikroskopijom. Utvrđeno je da je temperatura od 1100°C bila isuviše niska da se podstakne završna faza sinterovanja za ovaj sistem. Električna merenja su sprovedena za najgušće keramike sinterovane na 1400°C dva sata., In this article the influence of mechanical activation on sintering process of bariumstrontium-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°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°C was too low to induce final sintering stage for this system. Electrical measurements have been conducted for the densest ceramics sintered at 1400°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., Živojinović, J., Maričić, A., Pavlović, V. P., Pavlović, V. B.,& 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, Živojinović J, Maričić A, Pavlović VP, Pavlović VB, Ristić MM. 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, Nina, Živojinović, Jelena, Maričić, Aleksa, Pavlović, Vera P., Pavlović, Vladimir B., Ristić, Momčilo 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 . .
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