Electrochemical Formation of Titanium-aluminum Alloys from Ti₂O₃ In-situ Chloridized by AlCl₃ in Chloride Melts

This article investigated the feasibility of chlorination of titanium oxides to TiCl₃ in liquid phase using AlCl₃ as chlorinating agent in the molten NaCl-KCl system.Compared with the chlorination results of TiO,Ti₂O₃ and TiO₂ and based on the thermodynamic analysis of reactions of AlCl₃ with TiO,Ti₂O₃ and TiO₂,Ti₂O₃ was selected for chlorination to TiCl₃.Different electrochemical testing means were used to investigate the alloying process of Al（Ⅲ） and Ti（Ⅲ） on the molybdenum electrode and the feasibility of preparation of TiAl₂ and TiAl₃ alloys by codeposition.Alloys were analyzed using XRD and SEM.Thus,it is feasible to prepare Ti-Al alloys by molten salt electrolysis directly.