The diffusion of H was studied at 0 to 150C. The results could be described by:

D (cm2/s) = 1.7 x 10-3 exp[-4.8(kcal/mol)/RT]

B.A.Merisov, A.D.Serdyuk, I.I.Falko, G.Y.Khadzahi, V.I.Khotkevich: Fizika Metallov i Metallovedenie, 1971, 32[3], 604-9