SURFACE OXIDATION AND ITS EFFECT ON THE OBSERVED ELASTIC-MODULUS OF SIC WHISKER/AL2O3 COMPOSITES

被引：1

作者：

CHIU, CC ^{[1
]}

CASE, ED ^{[1
]}

CHIU, CCS ^{[1
]}

机构：

[1] SUNY BINGHAMTON,DEPT CHEM,BINGHAMTON,NY 13901

来源：

JOURNAL OF COMPOSITE MATERIALS | 1994年 / 28卷 / 01期

关键词：

D O I：

10.1177/002199839402800101

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

This article presents an analysis of the 27 wt. % SiC whisker/Al2O3 composites exposed to air for periods up to 180 hours at 1100 degrees C to 1450 degrees C. Experimental results indicate that SiC whisker reacts with oxygen and alumina to produce a mullite-rich surface layer on tested composite specimens. The surface oxidation reaction degrades the observed elastic moduli of specimens. A theoretical analysis based on the Bernoulli-Euler beam equation shows that the surface layer has lower elastic modulus than the unreacted core.

引用

页码：2 / 21

页数：20

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