Hydrogen-Sorption Properties of Alloy Based on Intermetallic (Ti, Zr)Mn_2–x

Abstract

The microstructure and phase composition of 15.4 at.% Ti–30.2 at.% Zr–54.4 at.% Mn as-cast alloy as well as the phase composition of the hydrogenation and subsequent desorption products are studied with optical microscopy and X-ray diffraction analysis. It is found that the alloy under investigation is able to absorb hydrogen at room temperature and 0.6 MPa hydrogen pressure without preliminary activation during short time up to Н/Ме ≈ 1.5. It is also shown that released hydrogen restores oxide films formed on the material during hydrogenation ensuring “self-cleaning” of the surface.