TRANSPORT OF HYDROGEN THROUGH AMORPHOUS ALLOY

摘要

Hydrogen permeation through amorphous and recrystallized foils of Fe-based alloys was investigated. Only the ionization of the gas in glow discharge near the upstream side of foils resulted in noticeable permeation fluxes. The kinetics of flux relaxation to the steady-state values revealed reversible trapping in amorphous alloy. Permeation flux demonstrated Arrhenius linear dependence for recrystallized samples and non-monotonous for amorphous ones. The mechanism of hydrogen transport is proposed taking into account re-emission and diffusion processes. Activation energies of thermal desorption and diffusion are evaluated.