The diffusivity of H at temperatures of between 299 and 322.5K was measured by using an electrochemical method, and uncoated or Pd-coated Cu foils (table 45). These data, and previous results, indicated that there was no deviation from the classical Arrhenius behavior at temperatures of between 1200 and 300K.
T.Ishikawa, R.B.McLellan: Journal of the Physics and Chemistry of Solids, 1985, 46[4], 445-7
Table 46
Parameters for H Diffusion in Cu Alloys at 800 to 1000K
Alloy | Do (cm2/s) | E (kcal/g-atom) |
Cu (commercially pure) | 2.29 x 10-2 | 11.3 |
Cu (oxidized and reduced) | 2.51 x 10-2 | 11.3 |