Mode I fracture toughness of short carbon fiber-dispersed SiC matrix composite fabricated by melt infiltration process

被引：31
|
作者：
Inoue, R. [1 ]
Yang, J. M. [1 ,2 ]
Kakisawa, H. [1 ]
Kagawa, Y. [1 ,3 ]
机构：
[1] Univ Tokyo, Res Ctr Adv Sci & Technol, Meguro Ku, Tokyo 1538904, Japan
[2] Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA
[3] Natl Inst Mat Sci, Hybrid Mat Ctr, Composite Mat Grp, Tsukuba, Ibaraki 3050047, Japan
来源：
CERAMICS INTERNATIONAL | 2013年 / 39卷 / 07期
关键词：
Composite; Toughness; Carbon fiber; SiC matrix; Criterion; ADVANCED FRICTION SYSTEMS; SILICON;
D O I：
10.1016/j.ceramint.2013.04.014
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：
Measurement of mode I fracture toughness of in-plane random oriented short carbon fiber-dispersed SiC matrix composite fabricated by melt infiltration process has been carried out. Fracture toughness (K-Ic) measured using a Brazilian disk specimen is similar to 3.5-4.1 MPa root m, which is comparable to those of monolithic engineering ceramics. The measured toughness is explained using average stress and characteristic length (chi(D)) of damage zone formed ahead of notch tip: K-Ic approximate to sigma(F)root pi chi(D)/2. Crack arrest behaviors in the short carbon fiber-dispersed SiC mini-composite play an important role on the stability of micro-cracks in the damage zone before unstable crack growth. (C) 2013 The Authors. Published by Elsevier Ltd All rights reserved.
引用
收藏
页码：8341 / 8346
页数：6
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