The diffusivities were determined at 320 to 650C. It was found that the results could be described by:

D (cm2/s) = 4.46 x 10-3 exp[-6.15(kcal/mol)/RT]

V.A.Goltsov, V.B.Demin, V.B.Vykhodets, G.E.Kagan, P.V.Geld: Fizika Metallov i Metallovedenie, 1970, 29[6], 1305-6