Effect of sintering parameters on friction wear behavior of graphite/copper composites
Graphite/copper composites had been prepared successfully with graphite/copper composite powders by way of mechanical milling, pressing, vacuum hot pressed sintering and hot extrusion. With dry friction wear testing, making use of such means as electronic balance, scanning electron microscopy (SEM) and energy dispersive X-ray (EDX), effect of such vacuum hot pressed sintering parameters as temperature, time and pressure on friction wear property of graphite/copper composites had been investigated. The results show that by heightening sintering temperature, prolonging sintering time and raising pressure of vacuum hot pressed sintering, friction coefficient and wear rate of composites are reduced. The main wear mechanism of composites is exfoliation of mechanically mixed layer or subsurface materials induced by ploughing of the counterface.
mechanical milling vacuum hot pressed sintering graphite/copper composite friction wear
JIN Yong-ping XIANG Chun CUI Liang-ping Guo Bin
Mechanical and Electronic Engineering Department, Zhejiang Water Conservancy and Hydropower College, Faculty of Mechanical Engineering & Automation, Zhejiang Sci-Tech University, Hangzhou 310018, China
国际会议
沈阳
英文
215-220
2009-08-24（万方平台首次上网日期，不代表论文的发表时间）