STRUCTURAL ASPECTS OF INTERACTION BETWEEN HYDROGEN AND Pd-Ag AND Pd-In-Ru ALLOYS

Abstract

The method for measuring the electrical resistance of films is employed to investigate the kinetics of the interaction between hydrogen and relatively thick (10-45 microns) films of Pd-Ag and Pd-In-Ru alloys, used as membrane materials in processes for producing hydrogen of high purity and manufactured by rolling method with high degrees of deformation at room temperature. Based on the previously established equilibrium and kinetic parameters of hydrogen interaction with the Pd alloy films which strongly depend on the microstructure during the initial stages of the film growth (the grain size, the width of the grain boundary regions and others.), we have shown that the solubility of hydrogen in these alloys increases at room temperature with increasing temperature of annealing the rolled alloy while the diffusion mobility of hydrogen in the Pd-Ag alloys is virtually independent of annealing temperature and in the Pd-In-Ru alloys it significantly reduces with the increasing of annealing temperature. These above regularities are associated with features of the microstructure formed during the annealing of rolled alloys.