IN-SITU SYNTHESIS OF HIGH-PURITY ALPHA-SI3N4 WHISKERS FROM AMORPHOUS SI-N-C POWDERS

被引：2
|
作者：
LI, YL
LIANG, Y
HU, ZQ
机构：
[1] State Key Laboratory, RSA, Institute of Metal Research, Shenyang, 110015
来源：
MATERIALS LETTERS | 1994年 / 21卷 / 3-4期
关键词：
D O I：
10.1016/0167-577X(94)90198-8
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
alpha-Si3N4 whiskers with diameters of 0.1-0.5 mum and lengths in the millimeter range were synthesized from organosilane-derived nanometer-sized amorphous Si-N-C powders at 1873 K in 1 atm of nitrogen. The whiskers nucleated on the alpha-Si3N4 grains crystallized from the Si-N-C powders and grew in situ by the vapor-solid (VS) mechanism. The absence of a catalyst and the in situ formation of the whiskers ensured that the whiskers were quite pure.
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页码：325 / 328
页数：4
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