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

页码：2097 / 2100

页数：4

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[2]

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