It was found that the data for 63Ni diffusion could be described by:

0.20%Ni:     D (cm2/s) = 1.09 x 100 exp[-69.33(kcal/mol)/RT]

0.55%Ni:     D (cm2/s) = 1.09 x 100 exp[-69.33(kcal/mol)/RT]

2.29%Ni:     D (cm2/s) = 5.93 x 10-1 exp[-67.30(kcal/mol)/RT]

9.21%Ni:     D (cm2/s) = 4.97 x 10-1 exp[-66.40(kcal/mol)/RT]

19.3%Ni:     D (cm2/s) = 4.09 x 10-1 exp[-65.41(kcal/mol)/RT]

G.F.Hancock, G.M.Leak: Metal Science Journal, 1967, 1, 33-6