The impurity diffusion of In was investigated by using the radiotracer technique and the isotope, 114mIn. The In was chosen with the aim of simulating Al diffusion; for which no feasible radio-isotope was available. It was found that the diffusivity of In was slightly higher than that of Fe. The data (table 37, figure 10) could be described by:
114mIn in Fe67Al33 (A2/B2): D (m2/s) = 2.1 x 10-3 exp[-2.48(eV)/kT]
M.Eggersmann, H.Mehrer: Philosophical Magazine A, 2000, 80[5], 1219-44
Table 35
Diffusivity of 65Zn in FeAl (B2 Structure)
Temperature (K) | D (m2/s) |
1371 | 3.45 x 10-12 |
1270 | 5.97 x 10-13 |
1171 | 8.33 x 10-14 |
1065 | 6.73 x 10-15 |
972 | 4.30 x 10-16 |
873 | 1.23 x 10-17 |