Solid-Phase Hydrogen Diffusion through a Fe₉₂Si₆B₆ Amorphous Membrane and its Effect on the Mechanical Properties of a Non-Crystalline Environment

Abstract—Diffusion of hydrogen from an acidic solution through an amorphous alloy membrane with the composition Fe₉₂Si₆B₂ that proceeds in a Devanathan cell is studied. It is found that the diffusion of hydrogen decreases with growth in the acidity of the environment at a constant ionic activity of the solution. The possible versions of the interaction of hydrogen with the nonequilibrium structure of the alloy under study are discussed. Possible mechanisms of formation of surface oxidation that block free passage of hydrogen through the membrane of alloy are proposed, and the kinetics of these processes is considered depending on the change in the acidity of the working solution. An insignificant change in the mechanical characteristics of Fe₉₂Si₆B₂ amorphous alloy (tensile strength, microhardness, Young modulus) as a result of action of the hydrogen-containing working solution on it is noted.