Hydrogen Storage Properties and Structures of BCC Ti-Cr Alloys Produced by Mechanical Alloying and Melt Spinning

摘要

Titanium-chromium alloys in the central composition range with metastable BCC structures were fabricated by mechanical alloying and melt spinning techniques, and their hydrogen storage properties such as the hydriding kinetics, pressure-composition isotherms, thermal desorption spectra and structural changes associated with the hydrogenation were investigated. It was shown that, in mechanically alloyed samples, the recovery of internal strain by preannealing at moderate temperatures was necessary to promote the kinetics and H-absorbency.