Severe wear mechanisms in Al2O3-AlON ceramic composites

被引：25

作者：

Berriche, Y

Vallayer, J

Trabelsi, R

Treheux, D

机构：

[1] Ecole Cent Lyon, CNRS, UMR 5621 Ingn & Fonctionnalisat Surfaces, F-69131 Ecully, France

[2] Univ Annaba, Inst Phys, Annaba 23000, Algeria

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2000年 / 20卷 / 09期

关键词：

Al2O3-AlON; composites; electron microscopy; grain boundaries; wear;

D O I：

10.1016/S0955-2219(99)00294-0

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：

Severe wear mechanisms in Al2O3-AlON ceramic composites during their friction against a bearing steel were investigated and analysed by different techniques, mainly transmission electron microscopy (TEM). It was shown that ceramic damages correspond not to a classical intergranular cracking but to a breakdown of alumina-alumina grain boundaries leading to their pull off. Consequently, a new model of the severe wear of ceramics, based on a dielectric approach is proposed. Moreover, the existence of AlON located at such boundaries induces a delaying effect of this damage and seems to participate in the forming and the stability in the contact of a third body essentially constituted by iron oxides. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：1311 / 1318

页数：8

共 33 条

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