INFLUENCE OF THE SINTERING ADDITIVES ON THE PHASE-COMPOSITION AND THE THERMAL-CONDUCTIVITY OF ALUMINUM NITRIDE CERAMICS

被引：11
|
作者：
SURNEV, S [1 ]
LEPKOVA, D [1 ]
YOLEVA, A [1 ]
机构：
[1] HIGHER INST CHEM ENGN,DEPT TECHNOL SILICATES,SOFIA,BULGARIA
来源：
MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY | 1991年 / 10卷 / 01期
关键词：
D O I：
10.1016/0921-5107(91)90092-A
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Polycrystalline AlN ceramics have been fabricated with Y2O3, Y2O3 + CaO, CaO, CaF2 and CaC2 as additives. Using electron microscopy and microprobe analysis, several microstructural models describing the mechanism of formation of secondary phases have been proposed. The effect of the additives on the thermal conductivity of AlN has been correlated with the results of the microstructural analysis. The addition of Y2O3 has been found to result in a thermal conductivity as high as 117 W m-1 K-1 at room temperature.
引用
收藏
页码：35 / 40
页数：6
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