EFFECTIVE SINTERING AIDS FOR SI3N4 CERAMICS

被引：53

作者：

NEGITA, K

机构：

[1] Nissan Motor Co, Material Research, Lab, Yokosuka, Jpn, Nissan Motor Co, Material Research Lab, Yokosuka, Jpn

来源：

JOURNAL OF MATERIALS SCIENCE LETTERS | 1985年 / 4卷 / 06期

关键词：

CHEMICAL REACTIONS - Thermodynamics - METALLIC COMPOUNDS - Applications - SILICON COMPOUNDS - Oxidation;

D O I：

10.1007/BF00726981

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Effective sintering aids for Si//3N//4 ceramics are discussed on the basis of reactivities of metal oxide sintering aids with Si//3N//4, which are characterized by comparing the standard free energies for oxidation reactions of Si//3N//4 with those of metals and metal nitrides. The standard free energies of these oxidation reactions are examined, followed by a discussion of the reaction between Si//3N//4 and metal oxides. The discussion shows that reactions between Si//3N//4 and metal oxides around sintering temperatures (2000 K) are important factors in elucidating the roles of sintering aids for Si//3N//4 ceramics.

引用

页码：755 / 758

页数：4