The diffusion of atomic H, which was cathodically generated on one side of membranes (20 to 50μ) that were used as bi-electrodes, was monitored by measuring the open-circuit potential of the other side. The room-temperature diffusivity was estimated to be equal to 5 x 10-12 cm2/s.

F.Chao, M.Costa, P.Elkaim: Comptes Rendus, 1977, 284[17], 639-41

 

Table 9

Parameters for H Diffusion in Au

 

Condition

Do (m2/s)

E (kJ/mol)

annealed

4.67 x 10-8

29.63

as-quenched

5.08 x 10-10

22.74

aged 348K, 24h

4.42 x 10-8

35.60

aged 473K, 24h

1.11 x 10-9

26.58

aged 573K, 24h

4.43 x 10-9

27.71

aged 673K, 24h

7.02 x 10-10

23.78