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Home > Archive>Volume 52, Issue 4, 2023 >1201-1209. DOI:10.12442/j.issn.1002-185X.20220595
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Effect of Sputtering Power on High Temperature Tribolo-gical Behavior of La-Ti/WS2 Composite Films
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Affiliation:

1.School of Mechatronics Engineering, Henan University of Science and Technology, Luoyang 471003, China;2.Longmen Laboratory, Luoyang 471003, China;3.Henan Key Laboratory for Machinery Design and Transmission System, Henan University of Science and Technology, Luoyang 471003, China;4.Luoyang Bearing Research Institute Co., Ltd, Luoyang 471039, China;5.State Key Laboratory of Aviation Precision Bearings, Luoyang 471039, China

Fund Project:

National Key Research and Development Program of China (2021YFB3400401); Science and Technology Research Project of Henan Province (202102210073)

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    Abstract:

    Under high temperature conditions, the crystal WS2 is easily oxidized to WO3, which has a great impact on the tribological properties of WS2 solid lubrication films. In order to improve the tribological properties of WS2 solid lubricating films at high temperatures, the co-doped La-Ti/WS2 composite films were prepared by unbalanced magnetron sputtering. The effects of target power on the structure and tribological properties of La-Ti/WS2 composite films were studied. The micromorphology, composition, mechanical properties and microstructure of the films were analyzed by scanning electron microscopy (SEM), X-ray diffraction (XRD), nano indentation and X-ray photoelectron spectroscopy (XPS). The high temperature tribological properties of composite films were researched by high temperature friction tester. The results show that La-Ti/WS2 composite films show excellent tribological properties when the target power is 20 W at high temperature. At this time, the H/E value of the composite film is the largest, the friction coefficient is the smallest with the average value of 0.012, and the wear rate is the lowest, which is 1.56×10-8 mm3/N·m. This is mainly due to the production of rare earth oxides at the friction interface at high temperatures, which change the friction and wear mechanism of La-Ti/WS2 composite film, so that WS2 still has excellent tribological properties when it is damaged at high temperature, further expanding the scope of engineering application of WS2 composite films.

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[Cai Haichao, Xue Yujun, Ye Jun, Wang Jinghua, Pang Bitao, Li Hang. Effect of Sputtering Power on High Temperature Tribolo-gical Behavior of La-Ti/WS2 Composite Films[J]. Rare Metal Materials and Engineering,2023,52(4):1201~1209.]
DOI：10.12442/j. issn.1002-185X.20220595

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History
  • Received:July 17,2022
  • Revised:November 09,2022
  • Adopted:November 24,2022
  • Online: April 28,2023
  • Published: April 25,2023

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