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Progresses on cryo-tribology:lubrication mechanisms,detection methods and applications

International Journal of Extreme Manufacturing 2023年第2期5卷 62-88页

作者： Wenyan Cui Hongzhan Chen Jianxun Zhao Quansheng Ma Qiang Xu Tianbao Ma State Key Laboratory of Tribology in Advanced Equipment Tsinghua UniversityBeijing 100084People’s Republic of China

Tribology at cryogenic temperatures has attracted much attention since the 1950s with the acceleration of its applications in high-tech equipment such as cryogenic wind tunnels,liquid fuel rockets,space infrared telescopes,superconducting devices,and planetary exploration,which require solid lubrication for moving parts at low temperatures down to 4 K in cryogenic liquid,gaseous,or vacuum ***,the research progress regarding cryo-tribology is *** tribological properties and mechanisms of solid lubricants listed as carbon materials,molybdenum disulfide,polymers,and polymer-based composites with decreasing temperature are *** friction coefficient increases with decreasing temperature induced by thermally activated *** mechanism of transfer film formation should be considered as a significant way to enhance the tribological properties of solid *** addition,applications of solid lubrication on moving parts under cryogenic conditions,such as spherical plain bearings and roller bearings,are *** technology for tribological testing of materials and bearings at cryogenic temperatures is summarized,where the environmental control,motion and loading realization,as well as friction and wear measurement together in a low-temperature environment,result in the difficulties and challenges of the low-temperature *** particular,novel technologies and tribotesters have been developed for tribotests and tribological studies of solid lubricants,spherical plain bearings,and roller bearings,overcoming limitations regarding cooling in vacuum and resolution of friction measurement,among others,and concentrating on in-situ observation of friction *** not only promote a deep understanding of friction and wear mechanism at low temperatures,but also provide insights into the performance of moving parts or components in cryogenic applications.

关键词： low temperature cryogenic tribotester self-lubricating materials bearing

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