β-Si3N4 Powders by Faming SHS and Their Morphology Analysis

被引：0

作者：

Zhu Yuan ^{[1
]}

Yuan Xuanyi ^{[1
]}

Chen Guoping ^{[1
]}

Chen Kexin ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 2009年 / 38卷

关键词：

foaming SHS; beta-Si3N4; length/radius ratio;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Mechanically activated silicon powders were added to solution with AM/MBAM system and foaming agent. Porous green body with certain strength was attained after stirring and drying. SHS reaction was ignited in N-2 flow to prepare beta-Si3N4. Through controlling mechanical activation time and thinner concentration, beta-Si3N4 powders of different sizes and length/radius ratio were obtained. The product was examined by XRD and SEM, whose results illustrate that foaming SHS is effective in preparing full-grown beta-Si3N4 particles with controllable length/radius ratio. Compared with beta-Si3N4 powders by common SHS, the powders by foaming SHS have better crystallinity and morphological homogeneity.

引用

页码：190 / 193

页数：4

共 5 条

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