Ion implantation and diffusion annealing methods were used to study surface Co diffusion in 5N-purity specimens at 110 to 300C. The results could be described by:
D (cm2/s) = 9.0 x 10-3 exp[-46.4(kJ/mol)/RT]
K.Kusunoki, S.Nishikawa: Scripta Metallurgica, 1978, 12[7], 615-6
Table 217
Diffusivity of Au in Pb under Microgravity Conditions
Temperature (C) | Conditions | D (cm2/s) |
363 | micro-gravity | 2.27 x 10-5 |
363 | terrestrial | 3.81 x 10-5 |
400 | terrestrial | 3.53 x 10-5 |
437 | micro-gravity | 3.03 x 10-5 |
437 | terrestrial | 3.35 x 10-5 |
450 | micro-gravity | 3.40 x 10-5 |
450 | terrestrial | 3.79 x 10-5 |
475 | terrestrial | 4.19 x 10-5 |
500 | terrestrial | 4.89 x 10-5 |
538 | terrestrial | 5.19 x 10-5 |
538 | micro-gravity | 4.23 x 10-5 |
550 | micro-gravity | 4.40 x 10-5 |
615 | terrestrial | 5.96 x 10-5 |
670 | terrestrial | 6.39 x 10-5 |
700 | micro-gravity | 5.80 x 10-5 |
850 | terrestrial | 9.10 x 10-5 |
850 | micro-gravity | 7.95 x 10-5 |