Dual lubrication mechanism of Ti3C2Tx/SiO2 heterojunction in PAO20 lubricants

A single Ti 3 C 2 T x is not sufficient to meet the dispersing stability and lubricating performance requirements of lubricating oil in complex working conditions. Environmentally friendly high-performance Ti 3 C 2 T x composite lubricating oil additives combine the advantages of Ti 3 C 2 T x and other materials and have a promising long-term high-efficiency lubricating prospect. In this study, Ti 3 C 2 T x /SiO 2 heterostructures were prepared as lubricant additives to enhance the tribological performance of PAO20. Tribological tests indicate that the addition of 0.15 wt% Ti 3 C 2 T x /SiO 2 heterostructures reduced the average wear volume by 65.9 % at 392 N due to the synergistic effect of Ti 3 C 2 T x and SiO 2 . The excellent lubricating performance of Ti 3 C 2 T x /SiO 2 heterostructures is primarily attributed to the rolling effect of SiO 2 and the dual friction mechanism of Ti 3 C 2 T x /SiO 2 friction film during synergistic friction. The Ti 3 C 2 T x /SiO 2 friction film and SiO 2 enhance the interface load-bearing capacity and anti-friction/wear performance. This structural design of Ti 3 C 2 T x /SiO 2 heterostructures provides a new perspective for the design of Ti 3 C 2 T x composite lubricant additives .