A technique which was based upon gas permeation measurements at a thin layer of liquid metal was used to obtain H diffusion data at temperatures ranging from 900 to 1000C. These obeyed:

D (cm2/s) = 0.747 exp[-7.9(kcal/mol)/RT]

Method for the Determination of H Penetration and H Diffusion Coefficients in Liquid Al. O.M.Byalik, G.A.Remizov, K.I.Vashchenko, D.F.Chernega: Vestn. Kiev. Politekh. Inst. Ser. Mashinostr., 1971, 8, 127-30