Effect of grain size on thermal shock resistance of Al2O3-TiC ceramics

被引：57

作者：

You, XQ

Si, TZ

Liu, N ^{[1
]}

Ren, PP

Xu, YD

Feng, JP

机构：

[1] Hefei Univ Technol, Dept Mat Sci & Engn, Hefei 230009, Peoples R China

[2] Univ Sci & Technol China, Ctr Mech Testing, Shanghai, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2005年 / 31卷 / 01期

关键词：

composites; thermal shock resistance; mechanical properties; Al2O3; starting powder size; TiC;

D O I：

10.1016/j.ceramint.2004.02.009

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：

In this paper, thermal shock resistance of pure hot-pressed alumina and Al2O3-TiC composites was studied. In order to assess the influence of Al2O3 and TiC starting powder size on thermal shock resistance, Al, A1(2)O(3)-TiC composites with different particle size were fabricated. The addition of TiC into alumina matrix remarkably improves the mechanical properties and thermal shock resistance. Decreasing grain size can improve the thermal shock resistance, and increase in density improves thermal shock resistance ever further. The critical thermal shock temperature difference (DeltaTc) of Al2O3 (powder size 0.24 mum)-TiC (powder size 0.32 mum) composite is 100degreesC higher than the DeltaT(c) of monolith. (C) 2004 Elsevier Ltd and Techna S.H. All rights reserved.

引用

页码：33 / 38

页数：6

共 21 条

[1] The thermal shock behaviour of ductile particle toughened alumina composites [J].