| Abstract Scope |
Ti-Ni-Cu alloys possess excellent thermal stability, biocompatibility, and corrosion resistance, etc., and are widely used in aerospace, marine engineering, medical devices and other fields. In this paper, TiO₂, NiO and CuO were selected as raw materials, and Ti-Ni-CuO alloys were prepared by molten salt electro-deoxidation process in NaCl-CaCl₂ molten salt system. The thermodynamic calculation was carried out for its reduction process to determine the reaction course. The results show that at 800 °C, the O²⁻ removed by cathode reduction will react with Ca²⁺ in the molten salt to affect the raw materials, forming CaTiO₃. Among them, the Cu component is preferentially reduced (CuO→Cu₂O→Cu), followed by the reduction of the Ni component (NiO→Ni), and finally the gradual reduction of the Ti component (TiO₂/CaTiO₃→Ti₃O₅→Ti₂O₃→TiO→Ti), and finally forming Ti-Ni-Cu alloy. |