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

 

Table 270

Diffusion of 60Co in α-Ti

 

Temperature (K)

D (m2/s)

823

3.2 x 10-14

775

9.8 x 10-15

719

1.7 x 10-15

667

4.1 x 10-16

619

6.8 x 10-17