首页|(111708)A research on the electrical sliding behavior wear of dual-scale particulate reinforced copper matrix composites
(111708)A research on the electrical sliding behavior wear of dual-scale particulate reinforced copper matrix composites
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NSTL
Elsevier
This work aims to investigate the electrical sliding wear behavior of the dual-scale particulate reinforced copper matrix composites by a self-developed pin-on-disk wear tester. Cu-xCr-0.3Zr-1ZrB2 (x = 0, 0.5, 1.0) composites were fabricating by casting and cold rolling. The microstructure of worn surfaces was examined using scanning electron microscopy (SEM) and laser scanning confocal microscope to unravel the wear mechanisms. The results indicated that the combined effect of mechanical wear and electrical wear dominated the wear process with an increase in the apparent normal load. Amplifying the electrical current increased the wear loss of the sliding pair, in the meantime alleviated the fuctuation of the friction coeffcient with marginal changes in the average values. After introducing Cr element and ZrB2 particles, the wear rate decreased from 0.197 mg/m to 0.141 mg/m under moderate operating test conditions. Adhesive wear and abrasive wear occupied an important position in the wear mechanism of the Cu-1wt%Cr-0.3wt%Zr-1wt%ZrB2 composite under electrical current due to the elevation of thermal stability and the formation of a tribolayer introduced by these reinforcements.
Copper matrix compositeDual-scale particulateElectrical sliding wearElectrical current densityApparent contact pressure
Siruo Zhang、Huijun Kang、Min Cheng
展开 >
Key Laboratory of Solidifcation Control and Digital Preparation Technology, (Liaoning Province), School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, PR China
NSTL
Elsevier
