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Research Article | Open Access

MoS2 reinforced PEEK composite for improved aqueous boundary lubrication

Xin HOU, Pengpeng BAI, Jingyang LI, Yuanzhe LI, Hui CAO, Xiangli WEN, Yonggang MENG, Liran MA( ), Yu TIAN( )
State Key Laboratory of Tribology in Advanced Equipment, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China
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Abstract

Polyether-etherketone (PEEK) is a corrosion-resistant material that has been widely used in aqueous lubrication. However, its anti-wear performance must be improved for its application in the industry. In this study, to improve the anti-wear performance of PEEK for aqueous boundary lubrication, PEEK/MoS2 composites were prepared by ball-milling and spark plasma sintering processes. A competitive MoS2 mechanism between the low shear strength property and the role of promoting wear debris generation influences the anti-wear performance of PEEK/MoS2 composites. Experiments demonstrated that the coefficients of friction (COF) and wear rate of PEEK composite with 0.25 wt% MoS2 were significantly reduced 68% and 94%, respectively. Furthermore, this was the first time that a PEEK composite could achieve a COF of less than 0.05 in aqueous boundary lubrication. Its anti-wear performance was verified to be better than that of PEEK/carbon fiber (CF) and Thordon composites. The PEEK/MoS2 composite may be a potential material for underwater equipment because of its outstanding anti-wear performance in aqueous boundary lubrication.

Keywords

boundary lubricationMoS2aqueous lubricationanti-wear performancepolyether-etherketone (PEEK) composite

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Friction
Volume 11 Issue 9,
September 2023
Pages 1660-1672
DOI: 10.1007/s40544-022-0673-y
Cite this article:
HOU X, BAI P, LI J, et al. MoS2 reinforced PEEK composite for improved aqueous boundary lubrication. Friction, 2023, 11(9): 1660-1672. https://doi.org/10.1007/s40544-022-0673-y

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Received: 03 March 2022
Revised: 10 June 2022
Accepted: 30 June 2022
Published: 10 March 2023
© The author(s) 2022.

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