High thermal conductivity of spark plasma sintered silicon carbide ceramics with yttria and scandia

被引：62

作者：

Seo, Yu-Kwang ^{[1
]}

Kim, Young-Wook ^{[1
]}

Nishimura, Toshiyuki ^{[2
]}

Seo, Won-Seon ^{[3
]}

机构：

[1] Univ Seoul, Dept Mat Sci & Engn, Funct Ceram Lab, Seoul, South Korea

[2] Natl Inst Mat Sci, Sialon Grp, Tsukuba, Ibaraki, Japan

[3] Korea Inst Ceram Engn & Technol, Jinju Si, Gyeongsangnam D, South Korea

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2017年 / 100卷 / 04期

基金：

新加坡国家研究基金会;

关键词：

silicon carbide; spark plasma sintering; thermal conductivity; RARE-EARTH-OXIDE; ADDITIVES; STRENGTH;

D O I：

10.1111/jace.14748

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：

A fully dense SiC ceramic with a room-temperature thermal conductivity of 262 W(m<bold>K</bold>)(-1) was obtained via spark plasma sintering -SiC powder containing 0.79 vol% Y2O3-Sc2O3. High-resolution transmission electron microscopy revealed two different SiC-SiC boundaries, that is, amorphous and clean boundaries, in addition to a fully crystallized junction phase. A high thermal conductivity was attributed to a low lattice oxygen content and the presence of clean SiC-SiC boundaries.

引用

页码：1290 / 1294

页数：5

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