A new simulation technique was presented and was applied to the study of hydrogen diffusion in amorphous and crystalline iron. For amorphous model a broad continuous distribution of site and transition energies was obtained. The site energy distribution was well fitted to the Gauss form, but the transition energy distribution had an asymmetrical character. Furthermore, the activation energy for amorphous iron was close to that for face-centered cubic crystalline iron, but its pre-exponential factor has the same order of magnitude as for body-centered cubic crystalline iron. The concentration effect of hydrogen diffusion was also examined and it demonstrates the qualitative agreement with experimental data.

On the Estimation of Hydrogen Diffusion Parameters in Amorphous and Crystalline Irons. P.K.Hung, P.N.Nguyen, T.V.Mung: Journal of Non-Crystalline Solids, 2010, 356[25-27], 1262-6