Effects of LaF3/CeF3 on the friction transfer of PTFE-based composites

The friction transfer of polytetrafluoroethylene (PTFE) composites is closely related to their tribological performances . To clarify the effects of LaF 3 /CeF 3 on the friction transfer of PTFE-based composites, the transfer film thickness and coverage were investigated under different loads or speeds. The results show that the addition of LaF 3 /CeF 3 can decrease the transfer film thickness and increase the transfer film coverage to form a thin and uniform transfer film, and the co-filling of LaF 3 and CeF 3 is better in promoting friction transfer of PTFE-based composites than single addition of LaF 3 or CeF 3 . The correlation between transfer film and tribological properties was also analyzed, which indicates that the friction transfer is beneficial for improving the tribological properties of PTFE composites.