Preparation, microstructures and properties of Al2O3-TiC composites

被引：58

作者：

Cai, KF

McLachlan, DS

Axen, N

Manyatsa, R

机构：

[1] Univ Witwatersrand, Sch Phys, ZA-2050 Johannesburg, South Africa

[2] Univ Witwatersrand, Sch Proc & Mat Engn, ZA-2050 Johannesburg, South Africa

来源：

CERAMICS INTERNATIONAL | 2002年 / 28卷 / 02期

关键词：

composites; microstructure; alumina; properties; titanium carbide;

D O I：

10.1016/S0272-8842(01)00080-3

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：

Al2O3-TiC composites with various amounts of TiC, from 16 to 30 vol.%, were pressureless-sintered using 1 wt.% Al as an additive. The electrical conductivity, Vickers hardness, fracture toughness and wear resistance of the composites were studied. The hardness and toughness increased gradually with the increase of TiC volume fraction. The electrical conductivity increased with the increase of TiC volume fraction and increased about 10 orders of magnitude as the TiC volume fraction changed from 0.20 to 0.23. A sample whose TiC volume fraction is 0.23, which is close to its percolation threshold, had the best wear resistance. (C) 2002 Elsevier Science Ltd and Techna S.r.l. All rights reserved.

引用

页码：217 / 222

页数：6

共 17 条

[1]

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