The migration of H through polycrystalline samples (table 109) was studied by using electrochemical methods. It was found that the diffusion of H depended upon the alloy composition, the degree of cold work, and the concentration of H adsorbed into the solid. The addition of P, S and As compounds to the electrolyte promoted H absorption. Heat treatments which were intended to induce grain-boundary solute-segregation did not appear to affect the H permeation behavior.

R.M.Latanision, M.Kurkela: Corrosion, 1983, 39[5], 174-8

Table 109

Diffusion of H in Ni-Based Alloys