Fracture toughness and DBTT of MoB particle-reinforced MoSi2 composites

被引：1

作者：

Xiong, Z ^{[1
]}

Wang, G ^{[1
]}

Jiang, W ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China

来源：

HIGH-PERFORMANCE CERAMICS III, PTS 1 AND 2 | 2005年 / 280-283卷

关键词：

MoSi2; MoB; MSP; fracture toughness; DBTT;

D O I：

10.4028/www.scientific.net/KEM.280-283.1471

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：

The room temperature fracture toughness and the high temperature DBTT of MOB particle-reinforced MOSi2 composites were investigated using Vickers indentation technique and MSP testing method, respectively. Modified Small Punch (MSP) test is a method for evaluation of mechanical properties using very small specimens, and it's appropriate for the determination of strength and DBTT. It was found that the approximate fracture toughness of the composite is 1.3 times that of monolithic MOSi2, and its DBTT is 100degreesC higher than that of monolithic MOSi2 materials. Cracks deflection is a probable mechanism responsible for this behavior.

引用

页码：1471 / 1474

页数：4

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