Effects of Mechanical Activation on the Formation and Sintering Kinetics of Barium Strontium Titanate Ceramics
Аутори
Kosanović, DarkoLabus, Nebojša
Živojinović, Jelena
Peleš Tadić, Adriana
Blagojević, Vladimir A.
Pavlović, Vladimir B.
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
The influence of mechanical activation on the formation, sintering kinetics and morphology was investigated in sintered barium strontium titanate (BST) ceramics with different Ba-to-Sr ratios. Initial powders were mechanically activated for 20 and 120 min, leading to mechano-chemical reaction and formation of BaxSr1-xTiO3 phases. Agglomeration was found to represent an important factor in the process of formation of BaxSr1-xTiO3 phases around 800 oC and during sintering. It reduces the effectiveness of mechanical activation on formation of BaxSr1-xTiO3 phases beyond the short period (20 min), while in the process of sintering, prolonged mechanical activation (120 min) leads to a significant reduction in sintering temperature and the corresponding value of activation energy. In addition, all three systems show a phase transformation around 1100 oC, attributed to the hexagonal-to-cubic phase transition. Morphology of the final sintered ceramics can be correlated primarily with the state ...of the pre-sintered powder, where mechanically activated powders with smaller particle size produced more compact and less porous final product.
Кључне речи:
ceramics / sintering kinetics / SEM / phase transitionИзвор:
Science of Sintering, 2020, 52, 4, 371-385Издавач:
- Belgrade : ETRAN
Финансирање / пројекти:
- Министарство науке, технолошког развоја и иновација Републике Србије, институционално финансирање - 200175 (Институт техничких наука САНУ, Београд) (RS-MESTD-inst-2020-200175)
Институција/група
Институт техничких наука САНУ / Institute of Technical Sciences of SASATY - JOUR AU - Kosanović, Darko AU - Labus, Nebojša AU - Živojinović, Jelena AU - Peleš Tadić, Adriana AU - Blagojević, Vladimir A. AU - Pavlović, Vladimir B. PY - 2020 UR - https://dais.sanu.ac.rs/123456789/10039 AB - The influence of mechanical activation on the formation, sintering kinetics and morphology was investigated in sintered barium strontium titanate (BST) ceramics with different Ba-to-Sr ratios. Initial powders were mechanically activated for 20 and 120 min, leading to mechano-chemical reaction and formation of BaxSr1-xTiO3 phases. Agglomeration was found to represent an important factor in the process of formation of BaxSr1-xTiO3 phases around 800 oC and during sintering. It reduces the effectiveness of mechanical activation on formation of BaxSr1-xTiO3 phases beyond the short period (20 min), while in the process of sintering, prolonged mechanical activation (120 min) leads to a significant reduction in sintering temperature and the corresponding value of activation energy. In addition, all three systems show a phase transformation around 1100 oC, attributed to the hexagonal-to-cubic phase transition. Morphology of the final sintered ceramics can be correlated primarily with the state of the pre-sintered powder, where mechanically activated powders with smaller particle size produced more compact and less porous final product. PB - Belgrade : ETRAN T2 - Science of Sintering T1 - Effects of Mechanical Activation on the Formation and Sintering Kinetics of Barium Strontium Titanate Ceramics SP - 371 EP - 385 VL - 52 IS - 4 DO - 10.2298/SOS2004371K UR - https://hdl.handle.net/21.15107/rcub_dais_10039 ER -
@article{ author = "Kosanović, Darko and Labus, Nebojša and Živojinović, Jelena and Peleš Tadić, Adriana and Blagojević, Vladimir A. and Pavlović, Vladimir B.", year = "2020", abstract = "The influence of mechanical activation on the formation, sintering kinetics and morphology was investigated in sintered barium strontium titanate (BST) ceramics with different Ba-to-Sr ratios. Initial powders were mechanically activated for 20 and 120 min, leading to mechano-chemical reaction and formation of BaxSr1-xTiO3 phases. Agglomeration was found to represent an important factor in the process of formation of BaxSr1-xTiO3 phases around 800 oC and during sintering. It reduces the effectiveness of mechanical activation on formation of BaxSr1-xTiO3 phases beyond the short period (20 min), while in the process of sintering, prolonged mechanical activation (120 min) leads to a significant reduction in sintering temperature and the corresponding value of activation energy. In addition, all three systems show a phase transformation around 1100 oC, attributed to the hexagonal-to-cubic phase transition. Morphology of the final sintered ceramics can be correlated primarily with the state of the pre-sintered powder, where mechanically activated powders with smaller particle size produced more compact and less porous final product.", publisher = "Belgrade : ETRAN", journal = "Science of Sintering", title = "Effects of Mechanical Activation on the Formation and Sintering Kinetics of Barium Strontium Titanate Ceramics", pages = "371-385", volume = "52", number = "4", doi = "10.2298/SOS2004371K", url = "https://hdl.handle.net/21.15107/rcub_dais_10039" }
Kosanović, D., Labus, N., Živojinović, J., Peleš Tadić, A., Blagojević, V. A.,& Pavlović, V. B.. (2020). Effects of Mechanical Activation on the Formation and Sintering Kinetics of Barium Strontium Titanate Ceramics. in Science of Sintering Belgrade : ETRAN., 52(4), 371-385. https://doi.org/10.2298/SOS2004371K https://hdl.handle.net/21.15107/rcub_dais_10039
Kosanović D, Labus N, Živojinović J, Peleš Tadić A, Blagojević VA, Pavlović VB. Effects of Mechanical Activation on the Formation and Sintering Kinetics of Barium Strontium Titanate Ceramics. in Science of Sintering. 2020;52(4):371-385. doi:10.2298/SOS2004371K https://hdl.handle.net/21.15107/rcub_dais_10039 .
Kosanović, Darko, Labus, Nebojša, Živojinović, Jelena, Peleš Tadić, Adriana, Blagojević, Vladimir A., Pavlović, Vladimir B., "Effects of Mechanical Activation on the Formation and Sintering Kinetics of Barium Strontium Titanate Ceramics" in Science of Sintering, 52, no. 4 (2020):371-385, https://doi.org/10.2298/SOS2004371K ., https://hdl.handle.net/21.15107/rcub_dais_10039 .