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纳米铜添加剂改善钢-铝摩擦副摩擦磨损性能的研究
引用本文:于鹤龙,徐滨士,许一,王晓丽,刘谦.纳米铜添加剂改善钢-铝摩擦副摩擦磨损性能的研究[J].摩擦学学报,2006,26(5):433-438.
作者姓名:于鹤龙  徐滨士  许一  王晓丽  刘谦
作者单位:装甲兵工程学院,装备再制造技术国防科技重点实验室,北京,100072
基金项目:国家自然科学基金,中国人民解放军总装备部维修技术预先研究资助项目
摘    要:采用环-块摩擦磨损试验机对比考察了钢-铝摩擦副在液体石蜡与含纳米铜颗粒液体石蜡润滑下的摩擦磨损特性,研究了对纳米铜添加剂添加量与载荷对其摩擦磨损性能的影响,通过对磨损表面粗糙度、形貌及其主要元素的能谱分析,探讨了纳米铜颗粒作为添加剂时钢-铝摩擦副的润滑机制.结果表明:含0.25%纳米铜颗粒液体石蜡时,钢-铝摩擦副的摩擦磨损性能最优;在不同载荷下纳米铜颗粒可以改善铝的摩擦磨损性能,特别在中等载荷(50~125 N)下,其抗磨减摩作用更明显;纳米铜颗粒能够在磨损表面形成一层低剪切强度的铜保护膜,有效地避免粘着磨损,同时阻止铝元素向钢表面的转移,从而显著改善钢-铝摩擦副的摩擦磨损性能.

关 键 词:纳米铜颗粒  钢-铝摩擦副  润滑油添加剂  铜保护膜  摩擦磨损性能
文章编号:1004-0595(2006)05-0433-06
收稿时间:2005-10-15
修稿时间:2005-12-15

Friction and Sliding-wear Behavior of Steel-Aluminum Tribopair Improved by Nanocopper Additive
YU He-long,XU Bin-shi,XU Yi,WANG Xiao-li,LIU Qian.Friction and Sliding-wear Behavior of Steel-Aluminum Tribopair Improved by Nanocopper Additive[J].Tribology,2006,26(5):433-438.
Authors:YU He-long  XU Bin-shi  XU Yi  WANG Xiao-li  LIU Qian
Institution:National Key Laboratory for Remanufacturing, Academy of Armored Force Engineering, Beijing 100072, China
Abstract:Friction and wear properties of steel against aluminum were evaluated on a ring-on-block tribotester.The tests were carried out under lubrication of liquid paraffin(LP) alone and liquid paraffin containing oleic acid surface-modified Cu nanoparticles.Effects of concentration and load on the tribological properties of Cu nanoparticles were investigated.LP containing 0.25% Cu nanoparticles exhibited the best tribological properties and good wear resistance and friction reduction at different loads,especially at applied loads between 50 N and 125 N.Thin copper film formed and spread out on metal surface,which provided low shear strength,prevented transfer of Al to steel surface and reduced friction and wear.
Keywords:Cu nanoparticles  steel/aluminum tribopair  lubricating oil additive  Cu protective film  friction and wear behavior
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