摘要
研究了水热法制备四方相钛酸钡纳米粉末的机理 ,分析了改变实验条件 (反应时间、反应温度、溶液PH值、前驱物及前驱物的化学比等 )对反应产物的影响 ,提出由于水热法的密闭性造成反应过程中氧分压只能通过扩散来得到补偿从而影响生成物中钡空位的浓度进而阻碍生成物向四方相转化的进程。通过对改变反应时间所得产物的X
In this paper,the formation mechanism(in-situ transformation and dissolution-precipitation mechanism)and reaction conditions(reaction time?temperature,precursors,pH value,Ba 2+ /Ti 4+ molar ratio etc.)of hydrothermal synthesis of barium titanate powder were discussed.By adjusting reaction time,a series of powders were produced and analyzed.The results testifies the theoretic analysis.
出处
《绝缘材料》
CAS
北大核心
2004年第2期25-27,共3页
Insulating Materials
关键词
钛酸钡
制备
水热合成法
barium titanate
hydrothermal synthesis
