The migration of H through annealed foil at temperatures of between 120 and 430C, or through as-rolled foil at temperatures of between 80 and 200C, was studied. It was found that the annealed specimens exhibited permeabilities, diffusivities (figure 20), and solubilities which were in quite good agreement with literature data. The permeation behavior of as-rolled foil differed from that of annealed foil. This was attributed to the trapping of H at sites which were suggested to be associated with vacancies. The trap binding energy was about 0.26eV.

Hydrogen Permeation through Nickel. Y.Furuya, E.Hashimoto, T.Kino: Japanese Journal of Applied Physics - 1, 1984, 23[9], 1190-6