Wear is primarily cause of failure of artificial joints. In this study, two–step plasma immersion ion implantation technique, thermal oxidation (TO) treatment, laser surface texturing (LST) treatment and TO+LST treatment were developed and applied for modification of Ti6Al4V alloy. The surface layer structures and the wettability of the modified alloys were investigated. A pin-on-disc tribometer has been used to evaluate the tribological response of UHMWPE to untreated, two–step ion implanted, TO treated, LST treated and TO+LST treated Ti6Al4V counterfaces under distilled water and serum lubricated. The result showed that the after the ion implanted or TO-Treated, the TiO,Ti₂O film was formed in the subsurface of Ti6Al4V alloys. The wettability of the modified alloy surfaces were increased significantly. The friction coefficients and the

dangsheng xiong*, dangsheng xiong, China

*presenting author