MICROSTRUCTURE OF LIQUID PHASE SINTERED SILICON CARBIDE CERAMICS WITH HIGH FRACTURE TOUGHNESS

被引：0

作者：

Jiang, Yong ^{[1
]}

Wu, Laner ^{[1
]}

Chen, Yuhong ^{[1
]}

Huang, Zhenkun ^{[1
]}

机构：

[1] N Univ Ethn, Sch MSE, Yinchuan 750021, Peoples R China

来源：

CERAMIC MATERIALS AND COMPONENTS FOR ENERGY AND ENVIRONMENTAL APPLICATIONS | 2010年 / 210卷

关键词：

silicon carbide ceramics; AlN; -; Re2O3; aids; microstructure; fracture toughness;

D O I：

暂无

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

By SEM observation and EDX analysis, the relation between the fracture mechanism and the high toughness in the liquid-phase sintered (LPS) SiC ceramic with high toughness was revealed. The effects of two kinds of sintering methods, pressureless (PLS) and hot-pressing (HP), on their microstructure features and the characteristics of fracture mode were investigated. The results show that both the crack-break ways along the grain-boundary and the transgranular fracture were together enable the toughness higher in the PLS specimen, and the crack-break way along the grain-boundary was the key reason for the higher toughness in HP specimen.

引用

页码：349 / 353

页数：5

共 4 条

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