Impurity diffusion coefficients were determined at 980 to 1320K by using a capillary reservoir technique. The results could be described by:

D (cm2/s) = 9.07 x 10-4 exp[-4.9(kcal/mol)/RT]

T.Ejima, T.Yamamura, N.Uchida, Y.Matsuzaki, M.Nikaido: Nippon Kinzoku Gakkaishi, 1980, 44[3], 316-23