Preparation and growth mechanism of β-Si3N4 rod-like crystals by combustion synthesis

被引：25
|
作者：
Chen, DY [1 ]
Zhang, BL [1 ]
Zhuang, HR [1 ]
Li, WL [1 ]
Xu, SY [1 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Ceram, Shanghai 200050, Peoples R China
来源：
MATERIALS LETTERS | 2002年 / 57卷 / 02期
关键词：
combustion synthesis; beta-Si3N4; rod-like crystal; growth mechanism;
D O I：
10.1016/S0167-577X(02)00799-1
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This paper presents the preparation of beta-Si3N4 rod-like crystals that have an average aspect ratio of similar to10 by combustion synthesis of the mixture of Si, alpha-Si3N4 and Y2O3 under 5 MPa nitrogen pressure. By using a quenching device, the growth morphology Of beta-Si3N4 rod-like crystals was observed and it is concluded that the growth mechanisms result from the synergy of VLS (vapor-liquid-solid) and VS (vapor-solid). (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：399 / 402
页数：4
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