Physics of the evolution of structure and elastic stresses in Pd-Mo alloyssaturated with hydrogen

Specific features in the structural evolution of a Pd-Mo alloy after its el ectrolytic saturation with hydrogen are studied by x-ray diffraction. It is revealed that these features depend on the concentration of absorbed hydro gen, the initial defect structure, and the character of its transformation upon hydrogen saturation. The factors responsible for the structural evolut ion depend on the concentration of alloy components and the difference betw een the hydrogen affinities, Debye temperatures, and elastic constants of t he components. A model proposed for the evolution of the structure and elas tic stresses in palladium-metal-hydrogen systems accounts for the above fac tors. (C) 2001 MAIK "Nauka/Interperiodica".