▎ 摘　　要

Single solid or liquid lubricant cannot meet the ever-increasing lubricating performance of mechanical motion under extreme operating conditions. Solid-liquid synergistic lubrication could effectively solve the friction and wear problems due to the cooperation of solid and liquid lubricant. Herein, the solid-liquid composite coating was prepared via molybdenum disulfide (MoS2) film under graphene hybrid gear oil lubrication conditions. Its anti-friction and anti-wear abilities were reduced by 13.0% and 37.4% compared with gear oil lubricated MoS2 film, and 46.7% and 97.1% lower than those of only MoS2 film, respectively. More importantly, the graphenelike transfer film at frictional contact interfaces was formed. Hence, the excellent lubrication function of MoS2- based solid-liquid lubricating coating was attributed to not only the structural advantages of MoS2 and graphene, but also the solid-liquid synergism and transfer film, thereby enhancing the interfacial load-bearing capacity and anti-friction/wear behaviors.