Sintering process influence on microstructure and intergranular impedance of rare-earth modified BaTiO3-ceramics
2011
Authors
Mitić, Vojislav V.Paunović, Vesna
Pavlović, Vera P.
Živković, Ljiljana
Contributors
Ristić, Momčilo M.Article
Metadata
Show full item recordAbstract
Sintering process is a complex of different synergetic effects during the ceramics materials consolidation. The microstructural level properties control is very important as a stage in advanced materials prognosis. SEM analysis of Yb/BaTiO3 doped ceramics showed that in samples doped with a low level of dopant and sintered at higher temperatures the grain size ranged from 10-60μm, while with the higher dopant concentration the grain size ranged between 2-15μm. The morphology of sintered BaTiO3-ceramics grains points out the validity of developing new structure analytical methods based on different geometries of grains' model systems. The idea of electrical properties of BaTiO3-ceramics being influenced by intergrain microcontacts can be successfully followed if we start with the two-sphere Coble’s model and also the correction of the Coble’s model. In this paper, the grains contact models based on spherical, ellipsoidal and polyhedral geometries are presented making a new modeling tool... for structure research of BaTiO3-ceramics materials. Intergranular impedance analysis of grains clusters was also introduced. Obtained results enabled establishment of interrelation between structural and electrical parameters.
Keywords:
BaTiO3 / barium titanate / microstructure / sintering / intergranular impedance / Coble’s modelSource:
Science of Sintering, 2011, 277-287Publisher:
- Belgrade : International Institute for the Science of Sintering
Funding / projects:
- Directed synthesis, structure and properties of multifunctional materials (RS-MESTD-Basic Research (BR or ON)-172057)
DOI: 10.2298/SOS1103277M
ISSN: 0350-820X
WoS: 000305094400004
Scopus: 2-s2.0-84857180917
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VinčaTY - JOUR AU - Mitić, Vojislav V. AU - Paunović, Vesna AU - Pavlović, Vera P. AU - Živković, Ljiljana PY - 2011 UR - http://dais.sanu.ac.rs/123456789/198 UR - https://vinar.vin.bg.ac.rs/handle/123456789/7365 AB - Sintering process is a complex of different synergetic effects during the ceramics materials consolidation. The microstructural level properties control is very important as a stage in advanced materials prognosis. SEM analysis of Yb/BaTiO3 doped ceramics showed that in samples doped with a low level of dopant and sintered at higher temperatures the grain size ranged from 10-60μm, while with the higher dopant concentration the grain size ranged between 2-15μm. The morphology of sintered BaTiO3-ceramics grains points out the validity of developing new structure analytical methods based on different geometries of grains' model systems. The idea of electrical properties of BaTiO3-ceramics being influenced by intergrain microcontacts can be successfully followed if we start with the two-sphere Coble’s model and also the correction of the Coble’s model. In this paper, the grains contact models based on spherical, ellipsoidal and polyhedral geometries are presented making a new modeling tool for structure research of BaTiO3-ceramics materials. Intergranular impedance analysis of grains clusters was also introduced. Obtained results enabled establishment of interrelation between structural and electrical parameters. PB - Belgrade : International Institute for the Science of Sintering T2 - Science of Sintering T1 - Sintering process influence on microstructure and intergranular impedance of rare-earth modified BaTiO3-ceramics SP - 277 EP - 287 DO - 10.2298/SOS1103277M ER -
@article{ author = "Mitić, Vojislav V. and Paunović, Vesna and Pavlović, Vera P. and Živković, Ljiljana", year = "2011", abstract = "Sintering process is a complex of different synergetic effects during the ceramics materials consolidation. The microstructural level properties control is very important as a stage in advanced materials prognosis. SEM analysis of Yb/BaTiO3 doped ceramics showed that in samples doped with a low level of dopant and sintered at higher temperatures the grain size ranged from 10-60μm, while with the higher dopant concentration the grain size ranged between 2-15μm. The morphology of sintered BaTiO3-ceramics grains points out the validity of developing new structure analytical methods based on different geometries of grains' model systems. The idea of electrical properties of BaTiO3-ceramics being influenced by intergrain microcontacts can be successfully followed if we start with the two-sphere Coble’s model and also the correction of the Coble’s model. In this paper, the grains contact models based on spherical, ellipsoidal and polyhedral geometries are presented making a new modeling tool for structure research of BaTiO3-ceramics materials. Intergranular impedance analysis of grains clusters was also introduced. Obtained results enabled establishment of interrelation between structural and electrical parameters.", publisher = "Belgrade : International Institute for the Science of Sintering", journal = "Science of Sintering", title = "Sintering process influence on microstructure and intergranular impedance of rare-earth modified BaTiO3-ceramics", pages = "277-287", doi = "10.2298/SOS1103277M" }
Mitić, V. V., Paunović, V., Pavlović, V. P.,& Živković, L.. (2011). Sintering process influence on microstructure and intergranular impedance of rare-earth modified BaTiO3-ceramics. in Science of Sintering Belgrade : International Institute for the Science of Sintering., 277-287. https://doi.org/10.2298/SOS1103277M
Mitić VV, Paunović V, Pavlović VP, Živković L. Sintering process influence on microstructure and intergranular impedance of rare-earth modified BaTiO3-ceramics. in Science of Sintering. 2011;:277-287. doi:10.2298/SOS1103277M .
Mitić, Vojislav V., Paunović, Vesna, Pavlović, Vera P., Živković, Ljiljana, "Sintering process influence on microstructure and intergranular impedance of rare-earth modified BaTiO3-ceramics" in Science of Sintering (2011):277-287, https://doi.org/10.2298/SOS1103277M . .