THERMAL-CONDUCTIVITY OF BORON-CARBIDE BORON-NITRIDE COMPOSITES

被引：36

作者：

RUH, R ^{[1
]}

DONALDSON, KY ^{[1
]}

HASSELMAN, DPH ^{[1
]}

机构：

[1] VIRGINIA POLYTECH INST & STATE UNIV, DEPT MAT SCI & ENGN, THERMOPHYS RES LAB, BLACKSBURG, VA 24061 USA

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1992年 / 75卷 / 10期

关键词：

D O I：

10.1111/j.1151-2916.1992.tb05525.x

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：

Because of their preferred orientation, the addition of boron nitride dispersions to hot-pressed boron carbide was found to result in a considerable degree of anisotropy in thermal conductivity of the resulting composite, indicated by an increase in the thermal conductivity perpendicular to the hot-pressing direction by as much as a factor of 3 at the highest boron nitride volume fractions of this study, and a decrease in the thermal conductivity parallel to the hot-pressing direction by as much as a factor of 2. The composite data were found to be below the values expected from composite theory, which may represent indirect evidence for the existence of an interfacial thermal barrier.

引用

页码：2887 / 2890

页数：4

共 25 条

[1]

[Anonymous], 1892, PHILOS MAG

[2]

BERMAN R, 1976, THERMAL CONDUCTION S, pCH7

[3] ROLE OF INTERFACIAL CARBON LAYER IN THE THERMAL-DIFFUSIVITY CONDUCTIVITY OF SILICON-CARBIDE FIBER-REINFORCED REACTION-BONDED SILICON-NITRIDE MATRIX COMPOSITES [J].