The fretting wear-resistant properties of steel with ion-sulphuration+shop-peening and shot-peening+ion-sulphuration duplex treatments |
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| Authors: | Xu Gui-Zhen Liu Jia-Jun Zhou Zhong-Rong Wu Xiao-Li |
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| Affiliation: | a Department of Mechanical Engineering, Tsinghua University, Beijing 100084, People's Republic of China;b Tribology Research Institute, Southwest Jiaotong University, Chengdu 610031, People's Republic of China;c Department of Materials Engineering, Nanjing University of Science and Technology, Nanjing 210094, People's Republic of China |
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| Abstract: | The fretting wear-resistant properties of ion-sulphuration+shot-peening and shot-peening+ion-sulphuration duplex-treated coatings on 1045 steel substrate were investigated. The results show that the fretting wear-resistance of shot-peening+ion-sulphuration coating was better than that of the ion-sulphuration+shot-peening coating. The fretting wear process of the duplex-treated coatings in the gross slip regime could be described as the sulphuration coatings playing an important lubricating role in the incubation period. Then a series of changes took place continuously and alternatively on the contact surfaces, including adhesion, material transfer, oxidation, delamination of the oxide layer and degradation. In the last stage, the trapping, pulverization and elimination of debris restrained the adhesion between the contact surfaces and led to a decrease in the friction coefficient. |
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| Keywords: | Fretting wear-resistant property Ion-sulphuration/shot-peening duplex-treated coating Wear debris Delamination |
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