ON THE SYNTHESIS, CHARACTERIZATION AND HYDROGENATION BEHAVIOR OF V-TI-FE ALLOY

A hydrogen storage vanadium-based solid solution alloy V0.85Ti0.10Fe0. 05 has been synthesised through a new route involving solid state diff usion. For the diffusion, a specific temperature-time profile has been determined, this corresponds to 30 degrees C (30 degrees C min(-1)) - -> 700 degrees C (12 h); 1.5 degrees C min(-1) --> 900 degrees C (36 h ); 2.5 degrees C min(-1) --> 30 degrees C. The structural characterisa tion of the alloy has been carried out through XRD and electron diffra ction techniques, the compositional analysis has been done by applying the EDAX technique. These investigations reveal the alloy lattice to be b.c.c. type solid solution with a = 3.042 Angstrom, which is in acc ordance with the lattice parameter a = 3.046 Angstrom determined from Vegard's law and average compositions correspond to the envisaged stoi chiometry. The formation of the alloy has also been checked through hy drogenation-dehydrogenation behaviour.