干摩擦及水润滑下氧化铬陶瓷薄膜的摩擦学性能  

Tribological behavior of chromium oxide coatings under dry friction and water lubrication conditions

作　　者：罗飞[1] 高克玮[2] 陶春虎[1] 李志[1] 

机构地区：[1]北京航空材料研究院,北京100095 [2]北京科技大学材料物理与化学系,北京100081

出　　处：《材料研究与应用》2009年第1期14-18,共5页Materials Research and Application

摘　　要：采用UMT摩擦学测试系统考察了氧化铬陶瓷薄膜/Si3N4摩擦副在干摩擦和水润滑下的摩擦学性能,通过对磨损表面形貌和磨痕表面的X射线能谱及二次离子质谱分析,探讨了其磨损机理.结果表明:水润滑可以有效地降低氧化铬陶瓷薄膜的摩擦系数和磨损率,主要原因是水引起主导磨损机制发生变化.水润滑情况下磨损表面生成了氢氧化铬的保护膜,磨损机制也由干摩擦时的粘着磨损转变为摩擦化学磨损和磨粒磨损.The tribological properties of magnetron sputtering chromium oxide coating sliding against Si3N4 ceramic ball under dry friction and water-lubricated condition were investigated on an UMT tribological tester. The morphology of the worn surface and the elemental composition of the wear debris were exam- ined by means of Energy Disperse Spectroscopy （EDS） and secondary ion mass spectroscopy（Tof-SIMS）. It has been found that friction and wear rate of chromium oxide coating can be effectively decreased by wa- ter lubrication because of the change of the main wear mechanisms caused by water lubrication. Tribo- chemical reaction of chromium oxide coating took place under water lubrication. With the generation of the protective film composed of chromium hydroxide formed on the worn surface, the wear mechanisms changed from adhesive wear under dry friction to tribo-chemical and abrasive wear under water lubrication.

关 键 词：氧化铬薄膜 干磨擦 水润滑 摩擦化学 

分 类 号：O484.5[理学—固体物理]