激光织构化青铜表面在油润滑条件下的摩擦特性  

Tribological performances of laser textured bronze under oil lubrication

作　　者：张旭[1] 蔡振兵[1] 赵磊[1] 张祖川 朱旻昊[1] 

机构地区：[1]西南交通大学机械工程学院摩擦学研究所,四川成都610031

出　　处：《材料热处理学报》2016年第6期163-170,共8页Transactions of Materials and Heat Treatment

基　　金：国家自然科学基金(51375407;U1530136)

摘　　要：利用UTM-2摩擦磨损试验机进行试验,考察了在PAO4基础油润滑下,不同温度条件下织构(不同面密度-ρt,5%、10%、20%和排列方式-θ=0、30°、60°、90°)对青铜表面摩擦性能的影响。结果表明:在PAO4基础油润滑下,在60℃和100℃工况下,相对于原始表面,织构增大了摩擦系数和磨损率,而在25℃和150℃工况下,表面织构对摩擦磨损的影响不明显;随着温度的升高,原始表面和各类型织构表面的摩擦系数与磨损率都是呈现先升高再降低的趋势,No.3(ρt=20%,θ=0)和No.5(ρt=20%,θ=60°)试样有着较好的耐磨性能。Tribological properties of laser surface textured bronze with different textured parameters were tested on an UTM-2 friction and wear tester under the lubrication of PAO4 base oil at different temperatures.The results show that compared to the original surface,the textured surfaces increase the friction coefficient and wear rate at 60 ℃ and 100 ℃,respectively.However,at 25 ℃ and 150 ℃,the texture exhibits a little influence on friction and wear behaviour of the bronze.With the temperature increasing,the friction coefficient and the wear rate of the all tested samples increase at first,and then decrease.The textured samples with the textured surface density of 20%and the angles between the dimples of zero and 60°have better anti-wear performance.

关 键 词：表面织构 温度 摩擦磨损 

分 类 号：TH117.1[机械工程—机械设计及理论]