Sliding Wear Mechanism of Metallic Rubbing Pairs and Effect of Solid Lubrication

<正> IntroductionNumerous rubbing pairs of mechanical equipment,such as the bearings,gears,camsand tappets,cylinder liners and piston-rings,slideways,oil pumps,sliding seals,often fail dueto the sliding wear.Especially as the working conditions of equipment are increasingly se-vere with the progress of science and technology,this problem becomes more and moreconspicuous:therefore researches into sliding wear mechanism and measures for reducing fric-tion and wear of materials possess an important theoretical and economicalsignificance.