Atomic absorption analysis was used to study the impurity diffusion of Cu at 1080 to 1613K. It was found that the results could be described by:

D (cm2/s) = 6.1 x 10-1 exp[-60.7(kcal/mol)/RT]

O.Taguchi, Y.Iijima, K.Hirano: Journal of the Japan Institute of Metals, 1984, 48[1], 20-4

The best linear fits to the solute diffusion data ([1063] to [1068], [1076] to [1078], [1080] to [1105], [1114] to [1117], [1120] to [1123]) yield:

Cu: Ln[Do] = 0.37E – 22.7 (R2 = 0.98); Fe: Ln[Do] = 0.33E – 21.4 (R2 = 0.998);

H: Ln[Do] = 0.66E – 11.5 (R2 = 0.46); Ni: Ln[Do] = 0.47E – 31.8 (R2 = 0.999);

O: Ln[Do] = 0.38E – 18.4 (R2 = 0.75)