水热条件下钛酸钡粉体形成机理及晶相转化的研究进展
首发时间:2008-05-09
摘要:钛酸钡是一种重要的功能介电材料,水热法是制备性能良好的高纯超细钛酸钡粉体的有效方法。近年来,水热法合成钛酸钡粉体形成机理及晶相转化是研究热点问题。全文主要综述了水热法合成钛酸钡粉体的二种可能的机理:原位转变机理和溶解-沉淀机理的研究进展,另外阐述了水热体系中钛酸钡晶体的晶相转化机理研究进展,以期通过对钛酸钡形成机理和晶相转化的机理的研究,为水热合成高含量四方相钛酸钡粉体提供理论依据。
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Research Developments in Hydrothermal Synthesis of Barium Titanate Formation Mechanism and Crystal Lattice Transformation Mechanism
Abstract: Barium titanate (BaTiO3), as a kind of very important dielectric material, has been widely applied to electronic industries. Ultrafine and unagglomerated barium titanate powders with a narrow size distribution can be synthesized by a hyrothermal method. In resent years, considerable interest has focused on the formation mechanism and crystal lattice transformation mechanism of barium titanate under hydrothermal conditions. In the paper, formation mechanisms of barium titanate powder synthesis by hydrothermal method mainly are reviewed and discussed, which are two possible mechanisms: in situ mechanism and diffusion-precipitation mechanism. The investigation status of crystal lattice transformation mechanism of the hydrothermal BaTiO3 crystallites have been summarized.
Keywords: barium titanate hydrothermal synthesis formation mechanism research development
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No.2124821476012103****
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