BN coated whisker -: Reinforced silicon nitride

被引：0
|
作者：
Kavecky, S
Sajgalík, P
Lencés, Z
机构：
[1] Slovak Acad Sci, Inst Mat & Mech Machines, SK-83812 Bratislava, Slovakia
[2] Slovak Acad Sci, Inst Inorgan Chem, SK-84236 Bratislava, Slovakia
来源：
FRACTOGRAPHY OF ADVANCED CERAMICS | 2002年 / 223卷
关键词：
boron nitride; silicon nitride; whisker coating; whisker-reinforcement; alpha-SiAlON ceramic;
D O I：
10.4028/www.scientific.net/KEM.223.237
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：
Thin films of boron nitride have been deposited on the surface of beta-Si3N4 whiskers by dip-coating in boric acid solutions, followed by drying at room temperature, heating in nitrogen flow, and finally nitriding in an ammonia flow at 1000degreesC. Infrared (IR) spectroscopy, scanning electron microscopy (SEM) studies proved the formation of boron nitride surface coating. Microstructure, mechanical properties and fracture characteristics of beta-Si3N4 whiskers reinforced Si3N4 and alpha-SiAlON matrix were investigated. The addition whiskers with BN coating increases bending strength and fracture toughness of the ceramics composite material.
引用
收藏
页码：237 / 240
页数：4
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