Microstructure and properties of silicon nitride matrix ceramic composites

被引：0

作者：

Kelina, IY ^{[1
]}

Drobinskaya, VA ^{[1
]}

Plyasunkova, LA ^{[1
]}

机构：

[1] Obninsk State Res Ctr Russian Federat, Tekhnol Res & Prod Assoc, Obninsk, Kaluga Region, Russia

来源：

REFRACTORIES AND INDUSTRIAL CERAMICS | 1998年 / 39卷 / 1-2期

关键词：

Silicon Nitride; Crack Resistance; Ceramic Composite; High Chemical Purity; Armor Plate;

D O I：

10.1007/BF02768147

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：

A study is summed up on the microstructure and mechanical properties of ceramic-matrix composites using silicon nitride, Si3N4, as the matrix and SiC whiskers as the reinforcement. It has been found that an Si3N4 matrix synthesized by a plasmachemical process and long SiC whiskers (with a length-to-diameter ratio of more than 50) enhance crack resistance, high-temperature strength, and microhardness, whereas an Si3N4 matrix produced by self-propagating high-temperature synthesis and short SiC whiskers (with a length-to-diameter ratio of less than 50) enhance thermal endurance. The proposed composites hold promise as candidates for use in engineering applications where wear resistance, thermal endurance, and shock resistance are critical.

引用

页码：22 / 25

页数：4