Absorption of hydrogen by vanadium-rich V-Ti-based alloys

The pressure-composition isotherms of dihydride formation in (V1 − xTix)1 − yMy (x = 0.1–0.2; M ≡ Al, Si, Zr, Cr, Fe, Co, Ni; y = 0.01–0.1) alloys were determined at temperatures between 273 and 433 K and hydrogen pressures up to 3 MPa. The effect of absorption-desorption cycles on the hydriding properties were also examined, together with an evaluation of the pulverization resistance. It was found from the experiment on hydriding cycles that the V0.9Ti0.1 alloys with chromium showed a good pulverization resistance and no significant deterioration of the effective hydrogen content, although the hysteresis factor was relatively large.