Liquid-phase sintering and properties of Si3N4-TiN composites

被引：20

作者：

Boskovic, S

Sigulinski, F

Zivkovic, L

机构：

[1] Boris Kidric Inst Nucl Sci, Vinca Mat Sci Lab, YU-11001 Belgrade, Yugoslavia

[2] Univ Nis, Fac Elect Engn, YU-18000 Nish, Yugoslavia

来源：

JOURNAL OF MATERIALS SYNTHESIS AND PROCESSING | 1999年 / 7卷 / 02期

关键词：

Si3N4-TiN composites; densification; fracture toughness; electrical conductivity;

D O I：

10.1023/A:1021873915174

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Densification during liquid-phase sintering of Si3N4-TiN was studied in the presence of Y2O3. The content of TiN was varied from 0-50 mass%. During the densification Y-silicate was formed. The amount of silicate increased with both decreasing fraction of TiN and increasing isothermal heating time. Density, fracture toughness, and electrical resistivity were measured as a function of TiN content. It was found that the density and fracture toughness increased with increasing TiN content. The electrical resistivity drops drastically, from 10(10) m Omega for sintered Si3N4 to 10(-3) m Omega for sintered Si3N4-TiN composite containing 30 vol% TiN.

引用

页码：119 / 126

页数：8