Preparation of High-Purity Submicron Barium Titanate Powders
Preparation of High-Purity Submicron Barium Titanate Powders
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高纯亚微米钛酸钡粉体的制备
DOI：
10.1111/j.1151-2916.1969.tb09157.x
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发表时间：
1969
影响因子：
3.9
通讯作者：
J. S. Smith
中科院分区：
文献类型：
--
作者：
K. S. Mazdiyasni;R. T. Dolloff;J. S. Smith
采用双异丙醇钡和四叔戊醇钛同时水解制备化学计量比的钛酸钡。粒度范围为50至150 A。纯度为99.98+%，主要污染物是来自玻璃装置的硅。通过电子显微镜和湿化学分析证明了粉末的均匀性和化学计量比。X射线和红外分析表明，在50 °C下制备和氦气干燥的材料具有钛酸盐晶体结构。粉末在1300°C下烧结成具有均匀微观结构的高密度半透明体。实验表明，烷氧基氧化物的制备可以为提高电气和结构陶瓷的质量和再现性提供广泛的基础。
Simultaneous hydrolytic decomposition of barium bis isopropoxide and titanium tetrakis tertiary amyloxide was used to produce stoichiometric BaTiO3. The particle size range was 50 to 150 A. The purity was 99.98+%, the major contaminant being silicon from the glass apparatus. The homogeneity and stoichiometry of the powder were demonstrated by electron microscopy and wet chemical analysis. X-ray and infrared analyses indicate that the material, as-prepared and helium-dried at 5O°C, has the titanate crystal structure. The powder sinters at 1300°C to a high density, translucent body with a uniform microstructure. The experiments suggest that the alkoxy-based preparation of oxides may provide a broad base for improving the quality and reproducibility of electrical and structural ceramics.