仿生非光滑表面对对磨副的损伤机理研究  

Damage Mechanism in Counter Pairs Caused by Bionic Non-smoothed Surface

作　　者：张占辉[1,2] 王义强[3] 叶国云 韩子渊[1,3] 张志杰[1,3] 骆海波[3] 

机构地区：[1]太原科技大学机械工程学院,太原030024 [2]河南省特种设备安全检测研究院,郑州450000 [3]浙江大学宁波理工学院机电与能源工程分院,浙江宁波315100 [4]宁波如意股份有限公司,浙江宁波315615

出　　处：《材料工程》2016年第8期98-103,共6页Journal of Materials Engineering

基　　金：国家科技重大专项资助项目(2012ZX04011021);浙江省自然科学基金资助项目(Y1110708);宁波市自然科学基金资助项目(2013A610152)

摘　　要：利用激光处理技术在灰铸铁表面加工了4种具有非光滑形态的试样,对比研究非光滑形态对对磨副的影响规律。结果表明:非光滑表面对对磨副的损伤机理与光滑试样不同,为非光滑表面凸起对对磨副的微观切削作用。非光滑表面对磨副的磨损质量均远大于未处理试样的对磨副,以对磨副磨损质量为评价指标,条状、环状、点状和网状对对磨副的损伤作用依次减小,损伤最小的网状对磨副其质量损失仅为等面积比下的条状对磨副的55.66%,在相同的单元体面积比和几乎相同的显微硬度条件下,通过调整单元体的形态可以有效地减轻对对磨副的损伤作用。这是由于不同形态的非光滑表面在磨损过程中的载荷分配机制不同。Four biomimetic non-smoothed surface specimens with different shapes were prepared by laser processing.Tests were conducted on MMU-5Gwear and abrasion test machine to study the influencing rule of non-smoothed surfaces on counter pairs.The results show that the mass loss of the friction pair matching with the non-smoothed units is much greater than the ones matching with the smooth specimens.The pairs matching with different non-smoothed units suffer differently.The nonsmoothed surface protruding zone exerts micro cutting on counter pairs.The striation causes the greatest mass loss of the pairs than the other non-smoothed units,which almost doubles the damage of the grid ones suffering the least.The difference in pairs damage is attributed to the different mechanism of undertaking the load in the process of wear.The damage can be alleviated effectively by changing the shapes of the units without increasing or decreasing the area ratio of the non-smoothed units.

关 键 词：摩擦磨损 非光滑表面 对磨副 仿生工程 

分 类 号：TG115.58[金属学及工艺—物理冶金]