Microstructural and mechanical characterization of SiC-submicron TiB2 composites

被引：18

作者：

Blanc, C ^{[1
]}

Thevenot, F ^{[1
]}

Goeuriot, D ^{[1
]}

机构：

[1] Ecole Natl Super Mines, Ctr SMS, F-42023 St Etienne 2, France

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 1999年 / 19卷 / 05期

关键词：

composites; borides; mechanical properties; SiC; TiB2;

D O I：

10.1016/S0955-2219(98)00227-1

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：

The aim of this work is to characterize ceramic composites SiC-TiB2. After preparation of dense composites alpha SiC-TiB2 (5, 10 and 15 vol% TiB2) by reactive pressureless sintering, the materials have been characterized by their microstructure and their mechanical properties. The dispersion of TiB2 particles is quite homogeneous, observed both by optical and scanning electron microscopies. Image analysis has revealed a majority of submicronic particles. Atomic force and transmission electron microscopies have shown the presence of nanometric TiB2 particles. Concerning mechanical properties, toughness increases with the TiB2 content, whereas hardness decreases when the TiB2 content increases. (C) 1999 Elsevier Science Limited. All rights reserved.

引用

页码：561 / 569

页数：9