Hydrothermal corrosion of alumina ceramics

被引：0
|
作者：
Oda, K [1 ]
Yoshio, T
机构：
[1] Yonago Natl Coll Technol, Dept Mat Sci, Yonago, Tottori 683, Japan
[2] Okayama Univ, Fac Environm Sci & Technol, Okayama 700, Japan
来源：
JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1997年 / 80卷 / 12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：
The corrosion behavior and strength degradation of alumina ceramics with 99%, 99.9%, and 99.99% Al2O3 were studied in water at 300 degrees C and 8.6 MPa for 1 to 10 d. The weight loss in alumina ceramics was mainly attributed to the dissolution of SiO2 and Na2O grain-boundary impurities. Intergranular corrosion proceeded in the alumina ceramics by preferential attack at the grain boundaries. The extent of the strength reduction for corroded alumina ceramics was related to the impurity level in the alumina ceramics.
引用
收藏
页码：3233 / 3236
页数：4
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