Alumina-coating of silicon nitride powder

被引：55

作者：

Wang, Chong-Min ^{[1
]}

Riley, F.L. ^{[1
]}

机构：

[1] Univ of Leeds, Leeds, United Kingdom

来源：

Journal of the European Ceramic Society | 1992年 / 10卷 / 02期

关键词：

Alumina coatings - Aluminum isopropoxide - Densification additives - Silicon nitride powders;

D O I：

10.1016/0955-2219(92)90122-T

中图分类号：

学科分类号：

摘要：

α-Silicon nitride powder has been coated with aluminium oxide generated by the in-situ hydrolysis of aluminium isopropoxide in isopropanol solution. TEM examinations show clearly the coating structure and the homogeneity of dispersion of the aluminium oxide over the surfaces of the silicon nitride particles. Benefits of this method of addition of densification additives are shown in a faster sintering densification rate of coated particles compared with conventionally mixed powders, and in the homogeneity of the final microstructure.

引用

页码：83 / 93