Gelation and crystallization of barium titanate precursor using metal alkoxide

被引：0

作者：

Takahashi, Seiji ^{[1
]}

Ohmura, Hideki ^{[1
]}

Miki, Kenji ^{[1
]}

Shimooka, Hirokazu ^{[1
]}

Kuwabara, Makoto ^{[1
]}

机构：

[1] Kyushu Inst of Technology, Fukuoka, Japan

来源：

Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan | 1994年 / 102卷

关键词：

Aging of materials - Crystalline materials - Crystallization - Gelation - Hydrolysis - Perovskite - Powders - Shrinkage - Sol-gels - Synthesis (chemical);

D O I：

10.2109/jcersj.102.1182

中图分类号：

学科分类号：

摘要：

Relations between gelation and crystallization of a barium titanate precursor and experimental parameters of sol-gel processing were studied systematically. A crystalline barium titanate gel powder was obtained at room temperature through periods of hydrolysis, gelation and shrinkage from a precursor solution composed of Ba(OEt)2 and Ti(OiPr)4. The aging time enough to shrink the gel was required to obtain a crystalline powder after gelation. The obtained crystalline powder was pseudo-cubic perovskite and the primary particle was about 20 nm in diameter.

引用

页码：1182 / 1184