Wear resistant properties of multi-walled carbon nanotubes reinforced Al2O3 nanocomposites

被引：95

作者：

Ahmad, I. ^{[1
]}

Kennedy, A. ^{[1
]}

Zhu, Y. Q. ^{[1
]}

机构：

[1] Univ Nottingham, Div Mat Mech & Struct, Fac Engn, Nottingham NG7 2RD, England

来源：

WEAR | 2010年 / 269卷 / 1-2期

基金：

英国工程与自然科学研究理事会;

关键词：

Al2O3; Carbon nanotubes; Nanocomposites; Tribology; Wear; TRIBOLOGICAL PROPERTIES; BEHAVIOR; COMPOSITES; MODULUS;

D O I：

10.1016/j.wear.2010.03.009

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Various amounts of well-dispersed multi-walled carbon nanotubes (MWCNTs) were used to reinforce an Al2O3 via a hot-press consolidation. Ball-on-disk wear tests were performed under different loading conditions of 14 N, 25 N and 35 N, to evaluate the wear and tribological properties of the Al2O3-MWCNT nanocomposites. In comparison with the monolithic Al2O3, the addition of MWCNTs decreased the coefficient of friction in Al2O3-MWCNT nanocomposites and a promising 80% reduction in coefficient of friction was recorded for nanocomposite containing 10 wt% MWCNTs, under a sliding load of 14 N. Abrasive sliding wear mechanism was observed in all samples. The results show that additions of MWCNTs can upgrade the monolithic Al2O3 and convert it into a wear resistance material. The MWCNTs played dual roles in improving the tribological performance of the nanocomposites, indirectly by influencing the microstructure and mechanical properties of nanocomposites and directly by acting as a lubricating medium. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：71 / 78

页数：8

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