润滑条件下铜锌合金表面粗糙度对磨损率的影响  

Effect of Surface Roughness on Wear Rate of Copper-Zinc Alloy under Lubricated Conditions

作　　者：刘麟[1,2] 杨超[1,2] Martin Dienwiebel 

机构地区：[1]常州大学机械工程学院,江苏常州213164 [2]常州大学江苏省绿色过程装备重点实验室,江苏常州213164 [3]卡尔斯鲁厄理工学院应用材料研究所,德国卡尔斯鲁厄76128 [4]弗劳恩霍夫应用技术研究协会材料力学研究所,德国弗莱堡79108

出　　处：《摩擦学学报》2017年第5期625-630,共6页Tribology

基　　金：国家自然科学基金项目(51601021;51441001);中国博士后科学基金面上项目(2017M611718);江苏省自然科学基金项目(BK20140262);江苏省高校自然科学研究项目(17KJA460002)资助~~

摘　　要：采用基于原位全息显微技术和放射性核素技术的试验装置对润滑条件下的Cu Zn36和100Cr6进行了摩擦磨损试验,分析了Cu Zn36在试验过程中的摩擦磨损特性,以及摩擦系数、磨痕表面粗糙度和实时磨损率之间的关系,进而建立了关于表面粗糙度的磨损模型,并通过拟合优度方法对磨损模型进行了评价.结果表明:在试验磨合的初始阶段,Cu Zn36表面平整性被迅速破坏而产生了较高的磨损率,随着试验的进行,磨痕表面的强化层逐渐形成,表面粗糙度和实时磨损率逐渐降低并趋于稳定.磨损模型的拟合优度R2的计算结果为90.23%,说明建立的磨损模型能够对给定工况下的实时磨损率进行较为准确的预测.In this study, we investigated the running-in behavior of brass（i.e. 64% copper and 36% Zinc） sliding against100 Cr6 under lubricated conditions on a tribometer based on in-situ holographic microscopy and radionuclide technique.The corresponding relationships between coefficient of friction, surface roughness and wear rate of brass was studied.On this basis, the wear model for surface roughness was established. Moreover, the wear model was evaluated by method of fitting goodness. In the beginning of experiment, the surface of Cu Zn36 revealed rough being accompanied by high wear rate. For the remainder of the test, wear-resistant layer was gradually formed in the near-surface region of the wear track.Meanwhile,surface roughness and wear rate decreased and tended to be stable.The fitting goodness of wear model was 90.23%,which means that the model can predict wear rate effectively under certain working conditions.

关 键 词：铜锌合金 表面粗糙度 磨损率 磨损模型 

分 类 号：TH117.1[机械工程—机械设计及理论]