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Research Article | Open Access

Magnetron sputtering NbSe2 film as lubricant for space current-carrying sliding contact

Yang YANG1,2, Lulu PEI1, Hongzhang ZHANG3, Kai FENG4, Pengfei JU5, Wenshan DUAN2, Li JI1( ), Hongxuan LI1, Xiaohong LIU1, Huidi ZHOU1, Jianmin CHEN1
Key Laboratory of Science and Technology on Wear and Protection of Materials, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
School of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China
Division of Energy Storage, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
College of Chemistry & Engineering, Yantai University, Yantai 264005, China
Shanghai Aerospace Equipment Manufacture, Shanghai 200245, China
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Abstract

This study demonstrates that magnetron-sputtered NbSe2 film can be used as a lubricant for space current-carrying sliding contact, which accommodates both metal-like conductivity and MoS2-like lubricity. Deposition at low pressure and low energy is performed to avoid the generation of the interference phase of NbSe3. The composition, microstructure, and properties of the NbSe2 films are further tailored by controlling the sputtering current. At an appropriate current, the film changed from amorphous to crystalline, maintained a dense structure, and exhibited excellent comprehensive properties. Compared to the currently available electrical contact lubricating materials, the NbSe2 film exhibits a significant advantage under the combined vacuum and current-carrying conditions. The friction coefficient decreases from 0.25 to 0.02, the wear life increases more than seven times, and the electric noise reduces approximately 50%.

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Keywords

NbSe2 filmsmagnetron sputteringvacuumcurrent-carrying tribological properties

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Friction
Volume 11 Issue 3,
March 2023
Pages 383-394
DOI: 10.1007/s40544-022-0603-z

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YANG Y, PEI L, ZHANG H, et al. Magnetron sputtering NbSe2 film as lubricant for space current-carrying sliding contact. Friction, 2023, 11(3): 383-394. https://doi.org/10.1007/s40544-022-0603-z

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Received: 10 November 2021
Revised: 10 January 2021
Accepted: 29 January 2022
Published: 03 June 2022
© The author(s) 2022.

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