The effect of powder bed on the liquid phase sintering of α-SiC

被引：18

作者：

Liang, Hanqin ^{[1
,2
]}

Yao, Xiumin ^{[1
]}

Liu, Xuejian ^{[1
]}

Huang, Zhengren ^{[1
]}

机构：

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

[2] Univ Chinese Acad Sci, Beijing 100039, Peoples R China

来源：

MATERIALS & DESIGN | 2014年 / 56卷

关键词：

Silicon carbide; Liquid phase sintering; Yttrium aluminium garnet; Powder bed; MECHANICAL-PROPERTIES; SILICON-CARBIDE; DENSIFICATION; MICROSTRUCTURE;

D O I：

10.1016/j.matdes.2013.09.068

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

SiC ceramics were sintered in the temperature range of 1680-1880 degrees C ( at 40 degrees C intervals) with and without powder bed to study the effect of powder bed on the densification process of liquid phase sintered SiC ceramics. The powder bed was found to play significant roles in inhibiting volatilization, reducing weight loss and keeping the microstructure uniform. Samples sintered with powder bed had relatively higher densification rate, higher mechanical properties and more uniform microstructure. There were two critical working temperature ranges for the powder bed. One was promoting efficient sintering during 1720 - 1800 degrees C. The other was inhibiting volatilization and achieving the final full density above 1840 degrees C. (c) 2014 Published by Elsevier Ltd.

引用

页码：1009 / 1013

页数：5

共 22 条

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