Effect of graphite powders on formation of AlN ceramic-bonded carbon composites

被引：7

作者：

Chen, Weiwu ^{[1
,2
]}

Miyamoto, Yoshinari ^{[1
,3
]}

机构：

[1] Osaka Univ, Joining & Welding Res Inst, Ibaraki, Osaka 5670047, Japan

[2] Shanghai Toyo Tanso Ltd, Shanghai 201611, Peoples R China

[3] Toyo Tanso Co Ltd, Adv Carbon Technol Ctr, Nishiyodogawa Ku, Osaka 5550011, Japan

来源：

CERAMICS INTERNATIONAL | 2014年 / 40卷 / 08期

关键词：

Graphite powders; AIN ceramic carbon composite (AIN/CBC); Strength; Thermal conductivity;

D O I：

10.1016/j.ceramint.2014.04.083

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：

AIN ceramic-bonded carbon (AlN/CBC) was designed as a carbon-based composite with a honeycomb microstructure consisting of carbon particles and thin AIN boundary layers. In this work, four types of graphite powders were used to prepare AIN/CBC (20 vol% AIN) at 1900 degrees C by spark plasma sintering. The effects of hardness and size distribution of graphite particles on the formation of AlN/CBCs were investigated. Hard particles with a uniform size distribution benefit the formation of AlN/CBC, resulting in a high strength of 100 MPa and thermal conductivity of 170 W/m K. However, soft particles or hard particles with a wide size distribution will make it difficult to form the continuous AIN network, then resulting in a weak strength. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：12597 / 12601

页数：5

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