油基纳米WS_2对粘着磨损面的自适应修复行为  

Self-adaption repairing action of oil-based nano-WS_2 to adhesive wear surface

作　　者：石琛[1,2,3] 毛大恒[2,3] 杨续跃[1] 

机构地区：[1]中南大学材料科学与工程学院,长沙410083 [2]中南大学机电工程学院,长沙410083 [3]中南大学高性能复杂制造国家重点实验室,长沙410083

出　　处：《粉末冶金材料科学与工程》2012年第6期792-798,共7页Materials Science and Engineering of Powder Metallurgy

基　　金：教育部博士点专项基金资助项目(20110162120086);中南大学中央高校基本科研业务费专项资金资助项目;中南大学博士后基金资助项目

摘　　要：为考察纳米WS2于油液中对已有粘着磨损表面的作用行为,通过摩擦实验、X射线光电子能谱分析(XPS)、X射线能量色散谱分析(EDS)、氩离子溅射分析等手段,研究油基纳米WS2对粘着磨损表面的形貌与表面膜层成分分布的影响。结果表明:油基纳米WS2可有效改善粘着磨损表面形貌,使磨损表面粗糙度降低46.5%,并减少磨损量82.3%,油液温升降低27.6%;油基纳米WS2通过其中的纳米WS2颗粒在粘着磨损面形成由纳米WS2、纳米WO3、纳米FeS和纳米FeSO4组成的致密极压抗磨修复层,该修复层通过滑移铺展将粘着磨损表面修复平整,表现出良好的自适应修复特性。In order to investigate the actions of nano-WS2 to the existing adhesive wear surface, influence of oil-based nano-WS2 on surface appearance and surface elements distribution of adhesive wear surface were researched through frictional experiments and surface analysis experiments such as X-ray photoelectron spectroscopy, X-ray energy dispersive spectroscopy and argon ion sputtering analysis. The frictional experiment results show that, oil-based nano-WS2 can improve the surface appearance of adhesive wear surface, smooth the wear surface and reduce the surface roughness by 46.5%, and it also can reduce abrasion loss by 82.3%, and decrease the oil temperature rising by 27.6%; surface analysis results show that the oil-based nano-WS2 can form a compact, extreme pressure and antiwear repairing layer which is composed of nano-WS2, nano-WO3, nano-FeS and nano-FeSO4. This repairing layer can repair the adhesive wear surface mainly by its self-adaption sliding spread on the wear surface. All above indicates that oil-based nano-WS2 has nice self-adaption repairing properties on adhesive wear surface.

关 键 词：纳米WS2 粘着磨损 自适应修复 

分 类 号：TH117.2[机械工程—机械设计及理论]