The effect of ion implantation on the wear of Co-Cr-Mo alloy

The effect of C+N and O ion implantation upon tribological properties of Co-Cr-Mo alloy was studied for fluence range 3-7×1017 cm−2 and implantation temperature range 200-400 °C. Phase structure changes and implanted ion distributions were determined. A marked improvement of the wear rate was noticed. Higher implantation temperatures reduce the improvement. No traces of nitride or carbide phases have been found but chromium oxide phase has been detected after O implantation.