The H permeability of amorphous and recrystallized Fe alloys was investigated. It was found that the surface layers of both samples were enriched with metalloids, and that these interfered with H penetration from the molecular and atomic phases. The kinetics of permeation transition to a steady state, upon ion-bombarding an amorphous alloy, revealed the operation of reversible capture processes. The permeation exhibited an Arrhenius dependence upon temperature in the case of recrystallized samples, and a non-monotonic dependence upon temperature in the case of amorphous samples. A model for H penetration was suggested which included re-emission and diffusion processes.

Hydrogen Permeability of Amorphous and Recrystallized Iron Alloys. E.A.Evard, N.I.Sidorov, I.E.Gabis: Technical Physics, 2000, 45[3], 377-9