摘要
In nature,when two solid interfaces contact and slide with each other,adverse friction and wear ensue.Lubrication is an important means to reduce them.Fluid film lubrication and boundary lubrication are the most typical lubrication paradigms that are different in the principle of formation.1 More generally,in fluid film lubrication mode,the two sliding surfaces are completely separated by a fluid film with a thickness much larger than the surface asperities.At this time,the energy dissipation is mainly caused by the fluid being sheared.Boundary lubrication occurs when two surfaces are in molecular contact,and the energy dissipation mainly comes from van der Waals force,Coulomb force,and dis-entanglement of surface polymers.Therefore,boundary lubrication is directly related to the physical and chemical properties of the surface.
基金
supported by the National Natural Science Foundation of China(NSFC)(81930048,81627805,and 32101057)
the Hong Kong Research Grant Council(15217721,R5029-19,and C7074-21GF)
the Hong Kong Innovation and Technology Commission(GHP/043/19SZ and GHP/044/19GD)
the Guangdong Science and Technology Commission(2019A1515011374 and 2019BT02X105)
WIU-CASQD2022009 of the Wenzhou Institute at University of Chinese Academy of Science.
