A study was made of diffusion in various alloys by measuring the H potential at the surface of thin metal plates during the permeation tests. The results depended upon the H concentration in the metal (tables 123 and 124).

G.Holleck, E.Wicke: Zeitschrift für Physikalische Chemie, 1967, 56[3-4], 155-72

Figure 26

Diffusivity of H in Pd