Hydrogen interaction in palladium alloys

Abstract

Thermodynamic data, reported in the literature, on the solubility of hydrogen in palladium alloys, obtained by the equilibrium-calorimetric technique, have been used in discussing the nature of the hydrogen interaction. Both metal-hydrogen and hydrogen-hydrogen interactions in these alloys have been discussed in terms of Sieverts' constants and interaction parameters. With the aid of Sieverts' constant and the self-interaction parameter for hydrogen, it has been clearly demonstrated that the nature of the hydrogen-hydrogen interaction in palladium alloys changes from attractive to repulsive at a proportion of gold, silver or manganese of around 30-40 at.%. © 1989.