By using a steady-state flow method, the diffusivity at 250 to 700C was found to be described by:
D (cm2/s) = 1.1 x 10-2 exp[-8.4(kJ/mol)/RT]
V.A.Kurakin, A.A.Kurdyumov, V.N.Lyasnikov, M.I.Potapov: Fizika Tverdogo Tela, 1979, 21[4], 1060-3
Table 45
Diffusivity of H in Cu Foils
Specimen | Temperature (K) | D (m2/s) |
coated | 299.0 | 2.60 x 10-14 |
coated | 307.0 | 9.11 x 10-14 |
coated | 308.0 | 3.55 x 10-14 |
uncoated | 299.0 | 3.76 x 10-14 |
uncoated | 300.5 | 2.40 x 10-14 |
uncoated | 301.0 | 5.17 x 10-14 |
uncoated | 306.0 | 4.41 x 10-14 |
uncoated | 314.0 | 1.09 x 10-13 |
uncoated | 314.5 | 9.89 x 10-14 |
uncoated | 322.5 | 1.56 x 10-13 |