The diffusion coefficients in the -phase were determined, at temperatures ranging from 980 to 1120K, by extrapolating the concentration dependences of the interdiffusion coefficients to infinite dilution. The results could be described by:
D (m2/s) = 3.8 x 10-5exp[-195(kJ/mol)/RT]
The Cu underwent fast impurity diffusion. It was concluded that the fast diffusion could be characterized by a large pre-exponential factor.
O.Taguchi, Y.Iijima: Philosophical Magazine A, 1995, 72[6], 1649-55