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.
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页码：349 / 353
页数：5
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