Microstructure and mechanical properties of silicon carbide monofilament reinforced zirconium diboride matrix composites

被引：8

作者：

Xiao, Kesong ^{[1
,2
]}

Guo, Quangui ^{[1
]}

Liu, Zhanjun ^{[1
]}

Zhao, Song ^{[1
,2
]}

Liu, Lang ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Coal Chem, Key Lab Carbon Mat, Taiyuan 030001, Peoples R China

[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2013年 / 39卷 / 02期

关键词：

Hot pressing; Mechanical properties; Toughness and toughening; CERAMIC COMPOSITES; NITRIDE;

D O I：

10.1016/j.ceramint.2012.07.018

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：

Unidirectional SiC monofilament-reinforced ZrB2 matrix composites were fabricated by hot pressing at 2173 K for 1 h under a uniaxial load of 30 MPa. The fracture toughness of SiC monofilament-reinforced ZrB2 matrix composites was 6.1 MPa m(1/2), which was much higher than that of monolithic ZrB2 and SiC particles reinforced ZrB2 matrix composites. The improvement of toughness for SiC monofilament-reinforced ZrB2 matrix composites was mostly attributed to the addition of the SiC monofilament, which could activate fiber pull-out and crack deflection. In addition, the high strength of SiC monofilament itself was also a major reason for the improvement of toughness of SiC monofilament-reinforced ZrB2 matrix composites. (C) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：2107 / 2110

页数：4

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