TC4 titanium alloy surface WC-TiB2 particle reinforced composite layer and preparation method thereof

• Main Authors: ZHANG ZHENG, SONG TIANGE
• Format: Patent
• Language: English
• Published: 15.07.2015
• Subjects: CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; METALLURGY; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION

The invention relates to a TC4 titanium alloy surface particle reinforced composite coating and a preparation method thereof, in particular to a TC4 titanium alloy surface WC-TiB2 particle reinforced composite layer and a preparation method thereof. The preparation method comprises the steps that 1, WC and B4C ceramic powder and metal Ti powder are sufficiently and evenly mixed in a mixing machine at a proper proportion, and ceramic metal mixed powder is prepared; 2, binders and the ceramic metal mixed powder are sufficiently mixed and stirred in a mortar at the proportion of the mass ratio of 3-4: 25, and ceramic metal powder paste is prepared; 3, the ceramic metal powder paste is smeared on the surface of titanium alloy 5 mm thick, and is dried and baked, and a prefabricated ceramic powder TC4 titanium alloy coating is obtained; 4, cladding is carried out through TIG, so that the TC4 titanium alloy base body and metal Ti powder in the coating has a metallurgic reaction with the B4C and WC ceramic powder in the coating, and the WC-TiB2 particle reinforced composite layer is generated on the surface of the TC4 titanium alloy.