Surface properties of CrN-coated Ti-6Al-4V alloys by arc-ion plating process

Ti-6Al-4V alloys which are widely used in various industries were successfully coated by a hard CrN layer using an arc-ion plating process (AIP). The CrN layer coated on the Ti-6Al-4V substrate was found to improve the surface properties such as hardness, smoothness and wear resistance compared with the substrate materials. Relatively good bonding force between the both materials was obtained.