Formation mechanism of barium titanate by thermal decomposition of barium titanyl oxalate

Title
Formation mechanism of barium titanate by thermal decomposition of barium titanyl oxalate
Author(s)
정원식[정원식]민봉기박지호[박지호]윤당혁
Keywords
CO OXIDATION; BATIO3; POWDER; OXIDES; ROUTE; INTERMEDIATE; TETRAHYDRATE; MANGANESE; COMPLEX; PD(110)
Issue Date
201103
Publisher
ELSEVIER SCI LTD
Citation
CERAMICS INTERNATIONAL, v.37, no.2, pp.669 - 672
Abstract
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.
URI
http://hdl.handle.net/YU.REPOSITORY/25536http://dx.doi.org/10.1016/j.ceramint.2010.09.056
ISSN
0272-8842
Appears in Collections:
중앙도서관 > rims journal
공과대학 > 신소재공학부 > Articles
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