Internal friction methods were used to study the diffusion of H. The results could be described by:

D (m2/s) = 5.21 x 10-7 exp[-158.48(kJ/mol)/RT]

H.Kokawa, T.Watanabe, A.Uehara, S.Karashima: Scripta Metallurgica, 1978, 12[4], 357-9