The diffusion coefficients for the Ib metal in the -phase were determined, at 980 to 1120K, by extrapolating the concentration dependences of interdiffusion coefficients to infinite dilution. The results could be described by:
D(cm2/s) = 2.5 x 10-4exp[-44.8(kcal/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