The data for the solubility of H in Ni in equilibrium with H2 gas at atmospheric pressure were analyzed in terms of a model which considered H–vacancy interactions. This model was shown to be compatible with both thermodynamic and kinetic data for the Ni–H system.

Hydrogen–Vacancy Interactions in Ni–H Solid Solutions. N.Z.Carr, R.B.McLellan: Journal of Physics and Chemistry of Solids, 2006, 67[8], 1797-802