The behavior of H in 38.83%Ni alloy was determined at 400 to 600C. The results could be described by:

D (cm2/s) = 2.82 x 10-3 exp[-8.1(kcal/mol)/RT]

R.Dus, M.Smialowski: Acta Metallurgica, 1967, 15, 1611-6