Mechanical and tribological behavior of nanostructured copper-alumina cermets obtained by Pulsed Electric Current Sintering

被引：26

作者：

Eddine, Wassim Zein ^{[1
]}

Matteazzi, Paolo ^{[2
]}

Celis, Jean-Pierre ^{[1
]}

机构：

[1] Katholieke Univ Leuven, Dept Met & Mat Engn MTM, B-3001 Louvain, Belgium

[2] CSGI & MBN Nanomat Spa, I-31050 Treviso, Italy

来源：

WEAR | 2013年 / 297卷 / 1-2期

关键词：

Nanostructured copper-alumina; Pulsed electric current sintering; Dispersion strengthening; Tribology; Mild oxidational wear; Sub-surface deformation; SLIDING WEAR; GRAIN-SIZE; FRICTION; COMPOSITES; EVOLUTION;

D O I：

10.1016/j.wear.2012.10.011

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Nanostructured Cu-Al2O3 powders obtained by the reduction of CuO with Al in a high energy ball mill were successfully consolidated by Pulsed Electric Current Sintering (PECS). The effect of the composition and microstructure of these PECS Cu-Al2O3 cermets on their strength was investigated. The friction and wear behavior of these cermets were studied under reciprocating sliding against corundum at 23 degrees C and 50% RH, and compared to the behavior of coarse grained PECS sintered pure copper. The effect of grain size on the coefficient of friction was masked by the formation of a surface tribolayer. The wear depth recorded on Cu-Al2O3 is lesser than half the one on coarse grained copper. Surface and subsurface deformation studied through FIB cross-sections showed that delamination and oxidative wear were active on Cu and Cu-Al2O3 cermets respectively under the current sliding test conditions. PECS Cu-Al2O3 cermets showed a good thermal stability even at 600 degrees C. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：762 / 773

页数：12

共 39 条

[1]

[Anonymous], 1948, T METALL SOC AIME

[2]

Bowden F. P., 1954, FRICTION LUBRICATI 1

[3]

Dieter George Ellwood, 1976, Mechanical metallurgy, V3

[4]

Dwyer-Joyce R.S., 2000, MODERN TRIBOLOGY HDB, P116

[5] Effect of grain size on friction and wear of nanocrystalline aluminum [J].

Farhat, ZN ;

Ding, Y ;

Northwood, DO ;

Alpas, AT .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1996, 206 (02) :302-313

[6]

Hall E.O., 1951, P PHYS SOC B, V64

[7] Effects of grain refinement and strength on friction and damage evolution under repeated sliding contact in nanostructured metals [J].

Hanlon, T ;

Chokshi, AH ;

Manoharan, M ;

Suresh, S .

INTERNATIONAL JOURNAL OF FATIGUE, 2005, 27 (10-12) :1159-1163

[8] SLIDING WEAR AND TRANSFER [J].

HEILMANN, P ;

DON, J ;

SUN, TC ;

RIGNEY, DA ;

GLAESER, WA .

WEAR, 1983, 91 (02) :171-190

[9] BALL-MILLING OF DUCTILE METALS [J].

HUANG, JY ;

WU, YK ;

YE, HQ .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1995, 199 (02) :165-172

[10] VC, Cr3C2 and NbC doped WC-Co cemented carbides prepared by pulsed electric current sintering [J].

Huang, S. G. ;

Li, L. ;

Vanmeensel, K. ;

Van der Biest, O. ;

Vleuges, J. .

INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS, 2007, 25 (5-6) :417-422

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