摘要
本文报道了用ｓｏｌ－ｇｅｌ法制备钡钛醋酸盐凝胶，并分别作高温灼烧和水热处理制备ＢａＴｉＯ３粉体。通过对产物的表征，比较了这两种处理过程，进而对水热条件下陶瓷粉体的形成机理作了探讨。由于水热条件，凝胶在反应介质中溶解，进而结晶形成晶粒，因此所形成的ＢａＴｉＯ３晶粒线度小（小于１００ｎｍ）；线度分布范围窄；晶粒形貌完整。
Barium-titanate acetate gel was prepared by sol-gel process and Perovskite fine barium titanate powders were synthesized by heat-treatment at high temperature and hydrothermal treatment for the gel.In this paper,the differences between the heat-treatment at high temperature and hydrothermal treatment,and the formation mechanism of powders under hydrothermal conditions were investigated.Hydrothermal treatment led to more homogeneous,better-crystallized BaTiO 3 powders with finer particle size (<100nm) than that of powders obtained by calcination.
出处
《硅酸盐通报》
CAS
CSCD
北大核心
1996年第2期33-40,共8页
Bulletin of the Chinese Ceramic Society
基金
国家自然科学基金重点项目
关键词
粉体
水热处理
陶瓷
钛酸钡
钡钛醋酸盐
凝胶
BaTiO 3 powders,sol-gel,precursor,calcination,hydrothermal treatment
