The diffusive behavior of 56Co was studied at 580 to 1160C. The results depended upon the depth of penetration and could be described by:

near-surface:     D (cm2/s) = 1.3 x 102 exp[-2.9(eV)/kT]

bulk:     D (cm2/s) = 1.9 x 100 exp[-2.0(eV)/kT]

G.S.Kulikov, I.N.Nikulitsa: Fizika Tverdogo Tela, 1972, 14[9], 2704-7

The best linear fits to the solute diffusion data ([46] to [92]) yield:

Be: Ln[Do] = 0.40E – 26.7 (R2 = 0.75); Cd: Ln[Do] = 0.55E – 50 (R2 = 0.61);

Co: Ln[Do] = 0.12E – 3.8 (R2 = 0.06); Fe: Ln[Do] = 0.36E – 20.2 (R2 = 0.66)

Ga: Ln[Do] = 0.19E – 15.5 (R2 = 0.79); S: Ln[Do] = 0.46E – 29.9 (R2 = 0.99)

Si: Ln[Do] = 0.43E – 31.6 (R2 = 0.42); Zn: Ln[Do] = 0.52E – 29.9 (R2 = 0.90)