Formation mechanism of barium titanate by thermal decomposition of barium titanyl oxalate
- Formation mechanism of barium titanate by thermal decomposition of barium titanyl oxalate
- 정원식[정원식]; 민봉기; 박지호[박지호]; 윤당혁
- CO OXIDATION; BATIO3; POWDER; OXIDES; ROUTE; INTERMEDIATE; TETRAHYDRATE; MANGANESE; COMPLEX; PD(110)
- Issue Date
- ELSEVIER SCI LTD
- CERAMICS INTERNATIONAL, v.37, no.2, pp.669 - 672
- This study examined the formation mechanism of BaTiO(3) from the thermal decomposition of barium titanyl oxalate. A significant amount of O(2) evolution near 357 and 720 degrees C was observed by gas chromatography/mass spectroscopy, except for the previously known H(2)O, CO(2), CO evolution. The metastable Ba(2)Ti(2)O(5)CO(3)(CO(2)) intermediate phase seemed to be transformed mainly to Ba(2)Ti(2)O(5)CO(3), while a certain amount of crystalline BaCO(3) and amorphous Ti-rich phase were formed simultaneously at 450-600 degrees C in air. A modification of the decomposition mechanism reported by Gopalakrishnamurthy et al. was proposed based on the experimental findings. (C) 2010 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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