The diffusion of Ni was studied at 1000 to 1350C. The results could be described by:

D (cm2/s) = 2.8 x 10-3 exp[-8.3(kcal/mol)/RT]

K.E.Oberg, L.M.Friedman, W.M.Boorstein, R.A.Rapp: Metallurgical Transactions, 1973, 4[1], 61-7