Direct Synthesis of TiFe Alloy from Mixed Metal Oxides

Abstract:

The direct synthesis of TiFe intermetallics from the mixed oxide precursors was studied by the solid oxide membrane process (SOM). Fe2O3 and TiO2 were mixed in molar proportions of 1:2 and 1:1, sintered at 1150 oC for 2 h, electrolyzed in molten CaCl2 at 1100 oC using a YSZ anode at a potential of 3.5 V for 2-6 h. The product was examined by SEM, EDS and XRD. The results show that TiO2 and Fe2O3 oxides are electrochemically reduced to TiFe and Fe2Ti alloy in molten CaCl2. Direct synthesis of TiFe alloy from the mixed oxide precursors is feasible

Key words:TiFe alloy; molten salt electrolysis; solid oxide membrane process (SOM)