Precipitation of magnesium aluminum spinel from alumina-matrix solid solution: I, fundamental concept and precipitation behavior

被引：0

作者：

Wang, YC ^{[1
]}

Fujimoto, T ^{[1
]}

Maruyama, H ^{[1
]}

Koga, K ^{[1
]}

机构：

[1] Kyocera Corp, R&D Ctr Kagoshima, Kagoshima 8994312, Japan

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2000年 / 83卷 / 04期

关键词：

D O I：

暂无

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Al2O3 ceramics with magnesium aluminum spinel dispersion particulates were produced by a precipitation treatment of Al2O3-matrix solid solution, (Al1-2x,Ti-x,Mg-x)(2)O-3. We successfully constructed the precipitation process for synthesizing the nanocomposite, using the solubility dependence of titanium and magnesium in Al2O3 on the valence of titanium. Changing of the valence of titanium from 4+ to 3+ was accomplished by controlling the heating atmosphere, and, thereby, magnesium precipitation was promoted. The precipitation behavior was characterized using X-ray diffractometry, and the microstructure was observed using transmission electron microscopy, We confirmed that magnesium aluminum spinel nanosized particulate were precipitated in the Al2O3 grain.

引用

页码：933 / 936

页数：4

共 19 条

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Wang, Yucong, 2000, American Ceramic Soc (83)
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