织构化表面固体润滑性能试验  

Property experiments of solid lubrication of laser texturing surface

作　　者：华希俊[1] 刘明[1] 杜志华[1] 吴锦泉[1] 符永宏[1] 

机构地区：[1]江苏大学机械工程学院,江苏镇江212013

出　　处：《江苏大学学报（自然科学版）》2014年第1期91-95,共5页Journal of Jiangsu University：Natural Science Edition

基　　金：国家自然科学基金资助项目(51175233);江苏省科技支撑计划项目(BE2010060);镇江市工业科技支撑项目(GY2012039);高校博士学科点专项科研基金资助项目(20113227110016);江苏省高校科研成果产业化推进项目(JHB2011-39)

摘　　要：采用激光表面织构技术，在45°钢试样表面加工微凹坑形貌，将固体润滑剂MoS，压填至微凹坑内，利用UMT-2型多功能摩擦磨损试验机，考察其在不同载荷条件下，不同间距微凹坑试样的摩擦磨损特性，并通过扫描电镜与能量色散谱仪对磨损表面进行测试分析．结果表明：集成运用激光微织构技术与固体润滑技术，能有效提高表面润滑性能；与未织构光滑试样相比，激光表面织构试样摩擦系数显著降低；一定范围内，随着织构密度增加，表面摩擦系数减小，耐磨、抗擦伤性能明显提高，较佳的织构面积占有率为19．6％-30．0％；微凹坑中预埋的固体润滑剂在摩擦过程中能有效涂覆到试样接触表面，形成稳定可靠的固体润滑膜．The micro-dimples morphology was processed on the surface of 45# steel by the laser surface texturing and then filled with MoS2. The UMT -2 multifunctional friction and wear testing machine was used to investigate the friction and wear characteristics under different load and dimple density. The wear tracks of the samples were observed by scanning electronic microscopy （SEM） and energy dispersive spectrometer （EDS）. The test results show that the lubrication properties of surfaces can be improved ef fectively by the technology of solid lubrication and laser surface texturing. Compared to untextured sur-faces, the friction coefficient of textured surfaces is decreased significantly. In a certain range, with the increasing of dimple density, the friction coefficient is reduced, and the wear-resistant and anti-abrasion performance are improved significantly with optimum dimple density of 19.6% - 30.0%. The solid lubri cant was coated to the sample surfaces from the dimples during the friction process to form solid lubrica ting film stably and reliably.

关 键 词：激光表面织构 固体润滑 减摩机理 摩擦磨损 涂覆 

分 类 号：TH117.3[机械工程—机械设计及理论]