摘要
为揭示Cu-Zr-Zr合金的干摩擦磨损行为,在MM-W1A型万能摩擦磨损试验机上,以Cu-Cr-Zr合金作为销试样,以GCr15钢作为摩擦盘,研究了滑动速度和接触压力对摩擦副磨损特性的影响,并探讨了片条状微粒的形成机理。结果表明:随着滑动速度与接触压力的增加,摩擦副的摩擦系数不断降低,Cu-Cr-Zr合金的磨损率显著增大;合金磨损表面呈现出强烈的塑性变形特征和磨粒磨损的痕迹;片条状微粒是由合金表面发生塑性变形并引起裂纹的萌生、扩展而形成的。
In order to reveal the friction and wear behavior of the Cu-Cr-Zr alloy under dry sliding,this study investigated the effects of sliding velocity and contact pressure on friction and wearcharacteristics of the friction pairs and analyzed the formation mechanism of flaky particles bythe dry sliding friction and wear tester of MM-W1A, with Cu-Cr-Zr alloy as the pin sample andGCr15 steel as the friction disc. Experimental results indicate that, the increasing sliding velocityand contact pressure decreases the friction coefficient of the friction pairs, and significantly increasesthe wear rate of the Cu-Cr-Zr alloy. The wear surface of the alloy showes obvious marks ofstrong plastic deformation and abrasive wear. Flaky particles are formed through the initiation,expansion and breaking of cracks caused by the plastic deformation.
出处
《电工材料》
CAS
2014年第6期13-16,共4页
Electrical Engineering Materials
基金
国家自然科学基金项目(51164015)
