The influence of TiC-particle-size on the fracture toughness of Al2O3-30 wt.%TiC composites

被引：27

作者：

Gong, JH ^{[1
]}

Miao, HZ ^{[1
]}

Zhao, Z ^{[1
]}

机构：

[1] Tsing Hua Univ, Dept Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2001年 / 21卷 / 13期

关键词：

Al2O3; mechanical properties; TiC; toughness and toughening;

D O I：

10.1016/S0955-2219(01)00206-0

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：

Seven grades of Al2O3-30 wt.% TiC composites were prepared by hot-pressing the Al2O3 powder mixed with TiC particles. The average sizes of the TiC particles used for preparing these composites were different with each other. The fracture toughness K-IC was measured in three-point bending for each composite. It was shown that the variation in the size of the TiC particles results in large changes in fracture toughness and there is a particular particle size for which the fracture toughness of the resultant composite reaches its maximum. A possible toughening mechanism was also proposed to explain these experimental findings. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：2377 / 2381

页数：5

共 14 条

[1] MICROSTRUCTURAL DESIGN OF TOUGHENED CERAMICS [J].