THERMAL FATIGUE RESISTANCE OF CVD SIC/C FUNCTIONALLY GRADIENT MATERIAL

被引：35

作者：

SASAKI, M ^{[1
]}

HIRAI, T ^{[1
]}

机构：

[1] TOHOKU UNIV,INST MAT RES,AOBA KU,SENDAI,MIYAGI 980,JAPAN

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 1994年 / 14卷 / 03期

关键词：

D O I：

10.1016/0955-2219(94)90094-9

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 deposit having a composition change from C to SiC was prepared on a graphite substrate by chemical vapour deposition (CVD). Under cyclic heat flow conditions (heat flux, 0.7 MWm(-2)) at surface temperatures of 1700-1150 K, SiC/C functional graded material (FGM) did not tolerate cracking, however, SiC-coated graphite (SiC NFGM) suffered cracking under the same condition and vertical cracking was observed in the SiC layer. The cracking was considered to be clue to the hoop tensile stress between the SiC layer and the graphite substrate caused by heating.

引用

页码：257 / 260

页数：4

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