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Wear and frictional behaviour of MoS2 pellets and steel lubricated with MoS2 powder
Authors:Kyuichiro Tanaka  Yoshitaka Uchiyama  Tatsuo Nakagawa  Masahisa Matsunaga
Affiliation:Precision Engineering Department, Faculty of Engineering, Kanazawa University, Kanazawa, Ishikawa 920 Japan;Mechanical Engineering Department, Kanazawa Institute of Technology, Nonoichi, Ishikawa 921 Japan;Precision Mechanical Engineering Department, Chiba Institute of Technology, Narashino, Chiba 275 Japan
Abstract:The wear and frictional behaviour of compressed pellets of molybdenum disulphide (MoS2) were measured when the pellets were slid against a 0.45% C steel disk in air. The wear of the MoS2 pellets decreased with increasing sliding velocity and increasing contact pressure. These factors are indicated by a parameter μPV which corresponds to the frictional heat. A thin deformed surface layer on the sliding surface of an MoS2 pellet was different from the MoS2 substrate.The wear of a bearing steel slider against mild steel was reduced by an MoS2 film in air and in vacuum. The specific wear rate of the slider and the coefficient of friction were influenced by the degree of vacuum.
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