OXIDATION EMBRITTLEMENT PROBE FOR CERAMIC-MATRIX COMPOSITES

被引：143
|
作者：
HEREDIA, FE
MCNULTY, JC
ZOK, FW
EVANS, AG
机构：
[1] Materials Department, College of Engineering, University of California, Santa Barbara, California
来源：
JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1995年 / 78卷 / 08期
关键词：
D O I：
10.1111/j.1151-2916.1995.tb08621.x
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：
A test method for probing oxidation embrittlement in ceramic-matrix composites has been devised and demonstrated for three composites: SiC/magnesium aluminosilite, SiC/SiC, and SiC/Al2O3. The method identifies a ''pest'' temperature T-p. The growth of an embrittled region from the surface, at T-p, has been illustrated. The embrittlement mechanism involves oxygen ingress through matrix cracks and silicate formation at the fibers, causing fiber failure.
引用
收藏
页码：2097 / 2100
页数：4
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