Preparation of Ti-Al-V Alloys by Aluminothermic Reaction

Reduction reaction can happen among Al, V₂O₅ and TiO₂ powders. Al can deoxidize metal V and Ti from the metal oxides. The electric igniter can be used to trigger the reduction. The reaction between Al and V₂O₅ is very intense and release large amounts of heat, but the heat which is needed to initiate the reaction between Al and TiO₂ is not enough. These two reactions have been initiated first and V-Al and Ti-Al alloys can be obtained with a higher metal recovery percent. Through adjusting the ratio of Al, V₂O₅ and TiO₂ powders, the system which combines these two reactions can ensured enough heat to react. KClO₃ is added to the system, as the ignition agent, in order to make the reaction much complete. Finally, Ti-Al-V alloys can be obtained and need remelt to adjust the constituents.