The diffusive behavior of Cu was studied at 800 to 1030C. The results could be described by:

800-910C:     D (cm2/s) = 1.6 x 102 exp[-38.2(kcal/mol)/RT]

910-1030C:     D (cm2/s) = 3.4 x 102 exp[-38.2(kcal/mol)/RT]

H.P.Bonzel, N.A.Gjostein: Physica Status Solidi, 1968, 25[1], 209-22