Effects of Curved Microchannel Surfaces with Sn-Ag-Cu and MXene-Ti 3 C 2 on Tribological Performance of M50 Bearing Steel in Solid–Liquid Composite Lubrication System

In order to further understand the role of MXene-Ti 3 C 2 in oil–solid synergistic lubrication, three kinds of microporous channel composites, M50, M50-Sn-Ag-Cu and M50-Sn-Ag-Cu-Ti 3 C 2 , were designed and prepared in this study. Tribological behaviors under different environmental conditions of oil lubrication and dry friction were analyzed. The results show that M50-Sn-Ag-Cu-Ti 3 C 2 exhibits excellent tribological properties under oil lubrication. Mxene-Ti 3 C 2 enhances the strength of solid lubricant film, so that the oil film can give full play to the antifriction and wear resistance of solid lubricant film. The synergistic effect of lubricating oil, solid lubricants and bionic curved microchannel reduces the friction coefficient and wear rate. The vibration acceleration along the reciprocating direction is also reduced.