Mechanical properties of recently developed Si3N4-SiC nanocomposite

被引：1

作者：

Kaslarová, M ^{[1
]}

Dusza, J

Hnatko, M

Lencés, Z

Sajgalík, P

机构：

[1] Slovak Acad Sci, Inst Mat Res, Kosice, Slovakia

[2] Slovak Acad Sci, Inst Inorgan Chem, Dept Ceram, Bratislava, Slovakia

来源：

FRACTOGRAPHY OF ADVANCED CERAMICS | 2002年 / 223卷

关键词：

mechanical properties; microstructure; Si3N4-SiC nanocomposites;

D O I：

10.4028/www.scientific.net/KEM.223.233

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：

Some mechanical properties (bending strength, hardness and fracture toughness) have been investigated in order to reveal the effect of adding carbon and silica to Si3N4, The low value of bending strength indicated the presence of some defects in the material. Scanning electron microscopy revealed that fracture in the Si3N4/SiC nanocomposite always originated from carbon agglomerates. These agglomerates caused a significant strength reduction of the studied material. The high value of Weibull modulus of the specimens indicates the same kind of defects with a similar size, geometry and location.

引用

页码：233 / 236

页数：4

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