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.
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This work was financially supported by the National Natural Science Foundation of China (Grant No. 51425502).
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The authors have no competing interests to declare that are relevant to the content of this article. The author Yonggang MENG is the Associate Editor of this journal. The author Yu TIAN is the Editorial Board Member of this journal.
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Xin HOU. He received his M.S. degree in mechanical engineering from Shandong University, China. Now he is a Ph.D. candidate in the Department of Mechanical Engineering, Tsinghua University, China. His current research focuses on wear mechanism and interface technology.
Liran MA. She received her B.S. degree from Tsinghua University in 2005, and received her Ph.D. degree from Tsinghua University in 2010. Following a postdoctoral period at the Weizmann Institute of Science in Israel, she is now working as an associate professor in the State Key Laboratory of Tribology in Advanced Equipment, Tsinghua University. Her interests in tribology have ranged from aqueous lubrication and hydration lubrication to the liquid/solid interface properties. She has published over 50 papers. Her honors include the Hinwin Doctoral Dissertation Award (2011), the Maple Leaf Award for Outstanding Young Tribologists (2015), and Chang Jiang Scholars Program-Young Professor Award (2015).
Yu TIAN. He is a professor and director of the State Key Laboratory of Tribology in Advanced Equipment (SKLT) at Tsinghua University of China. He gained his B.S. and Ph.D. degrees in mechanical engineering at Tsinghua University in 1998 and 2002, respectively. Subsequently, he joined the SKLT. He was a postdoc at the University of California, Santa Barbara with professor Jacob ISRAELACHVILI from 2005 to 2007. His research interest is the science and technology at the interface of physics, materials, engineering, and biology to understand the physical laws of adhesion, friction, and rheology to implement technological inventions to benefit the society. He has published over 150 peer-reviewed journal papers. He has received the Youth Science and Technology Award of China (2016), the Yangtze River Scholars Distinguished Professor (2015–2019), the National Natural Science Foundation for Distinguished Young Scientists of China (2014), the Wen Shizhu-Maple Award-Young Scholar Award (2012), the Young Scholar Achievement Award of the Society of Mechanical Engineering of China (2011), Outstanding Young Scholar Award of the Chinese Tribology Institute (2009), and the National Excellent Doctoral Dissertation of China (2004).
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Hou, X., Bai, P., Li, J. et al. MoS2 reinforced PEEK composite for improved aqueous boundary lubrication. Friction 11, 1660–1672 (2023). https://doi.org/10.1007/s40544-022-0673-y
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DOI: https://doi.org/10.1007/s40544-022-0673-y