Applicable to the surface treatment of titanium methods include wet coating method represented by Cr and Ni plating, heat diffusion method, surfacing method and sputtering method, etc. Z recent more advanced methods are CVD, PVD, PCVD surface strengthening method.
Wet coating: mainly with Cr plating, Ni-P method, directly on the titanium Cr plating difficulties, usually in the titanium substrate first plated Ni, then plated Cr. Electrolytic method of film-forming speed, the thickness of a few microns, decorative plating is only 1 ɲ m, is an effective wear-resistant surface treatment method.
Thermal diffusion method: Widely used in the hardening of iron and steel materials, carburisation, nitriding and boronisation and other thermal diffusion processes, but also used in the surface wear-resistant treatment of titanium.
Surfacing method: the use of plasma transfer arc for titanium surface butt welding hardening modification also has excellent wear resistance. The method is simple, the treated material does not need to be exposed to the entire high temperature, can prevent the mechanical properties of the decline, but must be secondary processing. Only limited to the treatment of thicker large workpieces.
