Hydride phases based on TiCr alloys with the hexagonal C14 Laves phase structure, doped with various d-metals, were synthesized. Using X-ray diffraction, it was found that the samples contain a hydride phase with an expanded lattice of the C14 structure and a face-centered cubic lattice known in the literature. The discovered face-centered cubic hydride phase is stable under normal conditions, and after hydrogen desorption, its lattice transforms into a body-centered cubic one. The lattice expansion of hydrides of TiCr alloys of both structural modifications correlates with the lattice volume effects of individual hydrides of the metals constituting the alloy components.
S.A. Lushnikov (Wed,) studied this question.