The embrittlement of Fe-based amorphous alloys was investigated, and H diffusion coefficients (figure 13) were deduced from the results.

M.Nagumo, T.Takahashi: Materials Science and Engineering , 1976, 23[2-3], 257-60

Figure 13

Diffusivity of H in Amorphous Alloys

(open squares: FeP13C7Cr10, filled squares: FeP13C7)