EFFECT OF GRAIN-BOUNDARY PHASE ON THE THERMAL-CONDUCTIVITY OF ALUMINUM NITRIDE CERAMICS

被引：31

作者：

CHEN, CF

PERISSE, ME

RAMIREZ, AF

PADTURE, NP

CHAN, HM

机构：

[1] KERAMONT CORP,TUCSON,AZ 85714

[2] LEHIGH UNIV,BETHLEHEM,PA 18015

来源：

JOURNAL OF MATERIALS SCIENCE | 1994年 / 29卷 / 06期

关键词：

D O I：

10.1007/BF00368932

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

AlN with high thermal conductivity was fabricated by pressureless sintering with Y2O3 as the sintering aid. The thermal conductivity was observed to increase with sintering time (up to 8 h) at 1810 degrees C. The distribution of the sintering aid was identified as one of the major factors influencing the thermal conductivity in AlN. Non-uniform distribution of the grain boundary phase was found to be associated with a significant amount of porosity, resulting in the enhancement of phonon scattering and thereby lowering the thermal conductivity.

引用

页码：1595 / 1600

页数：6

共 16 条

[1]

BOROM MP, 1972, AM CERAM SOC BULL, V51, P852

[2]

CHEN CF, 1991, MATERIALS PROCESSES, P193

[3]

CHEN CF, 1989, 9TH P IEPS ANN INT E, P1291

[4] EXTENDED DEFECTS IN SINTERED AIN [J].