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蔡海潮,薛玉君,李航,叶军,王景华.非平衡磁控溅射La-Ti/WS2 自润滑薄膜的摩擦磨损行为[J].稀有金属材料与工程(英文),2021,50(8):2708~2714.[Cai Haichao,Xue Yujun,Li Hang,Ye Jun and Wang Jinghua.Friction and Wear Behavior of Self-lubricating La-Ti/WS2 Films by Unbalanced Magnetron Sputtering[J].Rare Metal Materials and Engineering,2021,50(8):2708~2714.]
Friction and Wear Behavior of Self-lubricating La-Ti/WS2 Films by Unbalanced Magnetron Sputtering
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Received:June 18, 2020  
DOI:
Key words: La-Ti/WS2 composite films  unbalanced magnetron sputtering  low friction  wear resistance
Foundation item:National Basic Research Project (JCKY2018419C101); Project of Science and Technology Development of Henan Province (202102210073)
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Cai Haichao,Xue Yujun,Li Hang,Ye Jun and Wang Jinghua  
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Abstract:
      The solid lubrication films with high hardness and low friction coefficient should be developed to satisfy the severe working conditions of mechanical rotating parts of spacecraft. The pure WS2 film, Ti doped WS2 composite film (Ti/WS2) and La-Ti doped WS2 composite film (La-Ti/WS2) were prepared by unbalanced magnetron sputtering. The micro morphology, composition, hardness and tribological performance of the films were examined. Results show that compared with pure WS2 films and Ti/WS2 composite films, the microstructure of La-Ti/WS2 composite film becomes more compact. Meanwhile, the hardness and elastic modulus of La-Ti/WS2 composite film also increase significantly. Furthermore, the friction coefficient of La-Ti/WS2 composite film decreases, and the hardness/elastic modulus (H/E) ratio of La-Ti/WS2 composite film increases, which suggests that the wear rate of La-Ti/WS2 composite film is reduced. It is indicated that La doping contributes to the formation of stable transfer film on the friction contact surface, and thus improves the wear resistance and carrying capacity of La-Ti/WS2 composite film.