纳米硫化物添加剂在润滑脂中的微动磨损性能  

FRETTING WEAR BEHAVIOR OF SULFIDE NANOPARTICLES IN GREASE

作　　者：熊云[1] 王九[1] 方建华[1] 

机构地区：[1]中国人民解放军后勤工程学院军事油料应用与管理工程系,重庆400016

出　　处：《石油学报（石油加工）》2009年第B09期1-5,共5页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：重庆市教委科研创新团队项目资助

摘　　要：考察了纳米硫化物等添加剂在润滑脂中的微动磨损性能,并对微动磨斑表面进行了XPS分析。结果表明,与微米级固体润滑剂石墨相比,这些添加剂能显著降低微动磨损体积,在微动磨损后期还能降低摩擦系数。微动磨斑表面膜含有Cu、Zn、Ni、S、B等元素;从元素的电子结合能大小来看,固体表面膜主要有Cu、FeS、Fe2B及ZnO等物质。含纳米硫化物添加剂的润滑剂能显著降低微动磨损的主要原因在于纳米粒子的化学性质非常活泼,在微动过程中容易与摩擦表面发生化学反应,形成具有保护性的沉积物膜和化学反应膜。Fretting wear behavior of some sulfide nanoparticles in grease was studied, and the wear scar surfaces were analyzed by XPS method. The results showed that, compared with micron graphite, the existence of sulfide nanoparticles could evidently reduce fretting wear volume, and could reduce friction coefficient at the latter fretting time. Cu, Zn, Ni, S and B elements were found in the film of wear scar, and according to the electron binding energy, the film of wear scar consisted of Cu, FeS, Fee B and ZnO compounds. From above experiments, it is regarded that the remarkable friction-reducing and anti-wear properties of nanoparticles were caused by its chemical activity. During fritting the nanoparticles reacted easily with the metal elements of friction surface to form deposit and chemical protective films on wear surface.

关 键 词：纳米硫化物 微动磨损 润滑脂 

分 类 号：TQ050.4[化学工程] TG115.5[金属学及工艺—物理冶金]