An investigation was made of room-temperature H release, into vacuum, from electrolytic deposits which had been prepared under various conditions. Diffusivities (table 32) were deduced from the H desorption curves. The total amounts of mobile H which were given off at room temperature, and the total H which was given off at 800C under vacuum, were also determined. The results indicated that the H diffusivity, as well as the amounts of mobile and total H in electrolytic Fe, were strongly dependent upon the electrolysis conditions.
J.N.Petrov, E.A.Mamontov, V.V.Karyakin: Fiziko-Khimicheskaya Mekhanika Materialov, 1967, 3[3], 362-4
Table 32
Diffusivity of H at 20-22C after Electrolysis of Fe in Vacuum at 20 to 50C
T (C) | Current (A/dm2) | D (cm2/s) | Total H2 (mg/l) | Mobile H (%) |
20 | 10 | 2.19 x 10-8 | 15.00 | 20 |
50 | 10 | 4.80 x 10-9 | 11.43 | 2.5 |
50 | 15 | 1.45 x 10-8 | 13.6 | 0.97 |
50 | 15 | 2.96 x 10-8 | 7.29 | 4.59 |