An investigation was made of the Gorsky effect in the Nb-H system by using internal friction measurements at a vibrational frequency of 16Hz. The results for temperatures ranging from 235 to 830K could be described by:
D (cm2/s) = 5.4 x 10-4 exp[-0.109(eV)/kT]
A deviation from the exponential law was observed at lower temperatures.
Internal Friction due to Long-Range Diffusion of Hydrogen in Niobium (Gorsky Effect). R.Cantelli, F.M.Mazzolai, M.Nuovo: Physica Status Solidi B, 1969, 34, 597-600
Table 91
Diffusivity of Protons in Nb
H (at%) | Temperature (C) | D (cm2/s) |
3.2 | 120 | 2.0 x 10-5 |
3.2 | 210 | 3.5 x 10-5 |
33 | 120 | 0.8 x 10-5 |
33 | 210 | 1.6 x 10-5 |
33 | 310 | 2.7 x 10-5 |