Thermal conductivity of liquid phase sintered silicon carbide

被引：88

作者：

Sigl, LS ^{[1
]}

机构：

[1] Wacker Chem GmbH, Ceram Div, D-87437 Kempten, Germany

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2003年 / 23卷 / 07期

关键词：

interfacial thermal barrier; SiC; sintering; thermal conductivity; thermal diffusivity; YAG;

D O I：

10.1016/S0955-2219(02)00271-6

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

This study investigates the thermal diffusivity and conductivity of YAG/AIN-alloyed LPS-SiC as a function of composition and temperature using the laser-flash technique. Maxwell's model for the thermal conductivity of composites with spherical inclusions is adapted to typical features of the LPS-microstructure and its predictions are compared with experimental data. The results indicate that the thermal conductivity of LPS-SiC is controlled by (i) concentration of impurity atoms in the SiC-phase, (ii) fraction of bulk oxide phase and (iii) amorphous interphases which act as thermal resistance barriers. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：1115 / 1122

页数：8

共 40 条

[1] THERMAL-CONDUCTIVITY AND ELECTRICAL-PROPERTIES OF 6H SILICON-CARBIDE [J].