High-hardness carbide coatings and their production on X82WMoCrV6-5-4 steel using induction physical vapor deposition

Abstract

Due to simulation by the finite element method, the temperature fields in the “inductor – titanium target – product” system were calculated depending on the inductor current and exposure time during induction physical vapor deposition (IPVD). The conditions under which the titanium target was heated to the evaporation temperature in vacuum were determined. It was experimentally established that after IPVD at an inductor current I = 3.2–3.8 kA, electrical power consumption PE = 0.78–0.96 kW, and exposure t = 300–900 s, there was an in increase in the content of titanium C[Ti] = 43–51at.% and carbon C[C] = 42–46at.% on the surfaces of sample X82WMoCrV6-5–4 steel plates. According to the XRD data, the resulting layer on the surfaces of steel samples was a titanium-containing carbide coating, in which titanium carbide (TiC) was the main phase. It was found that during IPVD, both hard H = 16.42–36.82 GPa and superhard H = 59.30–60.55 GPa titanium-containing carbide coatings were obtained. Titanium-containing carbide coatings obtained by the new IPVD method can be used under the conditions of high concentrated and distributed loads.