High-temperature slow crack growth of SiC-Mo5(Si,Al)3C composites deter-mined by constant-stress-rate testing

被引：3

作者：

Zhu, QS ^{[1
]}

Shobu, K ^{[1
]}

机构：

[1] AIST, Inorgan Composite Mat Dept, Saga 8410052, Japan

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2000年 / 20卷 / 14-15期

关键词：

composites; crack growth; mechanical properties; melt infiltration; SiC-Mo-5(Si; Al)(3)C;

D O I：

10.1016/S0955-2219(00)00144-8

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 novel SiC-Mo-5(Si,Al)(3)C composite was fabricated through a melt-infiltration process, and the slow-crack-growth (SCG) behavior of the composite was characterized over four stressing rates ranging from 0.01 to 20 MPa/s both at 1200 and 1300 degreesC in 1 atm argon, using the constant-stress-rate ("dynamic fatigue") test. The composite shows a high resistance to the SCG at 1200 degreesC, where the slow-crack-growth parameter n was determined to be 86. At 1300 degreesC, however, no significant SCG behavior was observed for n higher than 500. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：2637 / 2640

页数：4

共 17 条

[1]

ADAMS TE, 1981, AM CERAM SOC BULL, V60, P730

[2] TIME-DEPENDENT STRENGTH DEGRADATION OF A SILICONIZED SILICON-CARBIDE DETERMINED BY DYNAMIC FATIGUE [J].