关键词: 摩擦副, 摩擦磨损, 氧化膜

Abstract: In this paper the P-V diagram of steal/steel rubbing pair under lubrication was measured on the ball-on-disc testing machine using the stepwise loading method. The role of lubricating oil in various transition regions was also examined. It had been proved that the transition of lubrication states in the P-V diagram was constituted by not three, but five regions. This paper analysed systematically also the composition and valence state of surface film by AES and ESCA in different lubrication states, discussed the role of oxide film in transitions of P-V diagram, and proposed a model about the structure and role of oxide film as well.

Key words: 摩擦副, 摩擦磨损, 氧化膜