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) = 2.5 x 10-8exp[-188(kJ/mol)/RT]
A linear relationship was observed between the logarithm of the pre-exponential factor and the activation energy.
O.Taguchi, Y.Iijima: Philosophical Magazine A, 1995, 72[6], 1649-55