Reactive Hot Pressing of ZrC-SiC Ceramics at Low Temperature

被引：61

作者：

Wang, Xin-Gang ^{[1
]}

Zhang, Guo-Jun ^{[1
]}

Xue, Jia-Xiang ^{[1
]}

Tang, Yun ^{[1
]}

Huang, Xiao ^{[1
]}

Xu, Chang-Ming ^{[1
]}

Wang, Pei-Ling ^{[1
]}

机构：

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

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2013年 / 96卷 / 01期

基金：

中国国家自然科学基金;

关键词：

ZIRCONIUM CARBIDE; COMPOSITES; DENSIFICATION;

D O I：

10.1111/jace.12090

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：

Composites of ZrCSiC with relative densities in excess of 98% were prepared by reactive hot pressing of ZrC and Si at temperature as low as 1600 degrees C. The reaction between ZrC and Si resulted in the formation of ZrC1-x, SiC, and ZrSi. Low-temperature densification of ZrC-SiC ceramics is attributed to the formed nonstoichiometric ZrC1-x and ZrSi liquid phase. Adding 5 wt% Si to ZrC, the three-point bending strength of formed ZrC0.813.4 vol%SiC ceramics reached 819 +/- 102 MPa with hardness and toughness being 20.5 GPa and 3.3 MPa.m1/2, respectively.

引用

页码：32 / 36

页数：5

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