Absorption of Hydrogen by Palladium-Platinum Alloys under High Pressures of Hydrogen Gas

Abstract

Effects of the absorption of hydrogen on the electrical resistance of a scries of palladium-platinum alloys have been studied at pressures of hydrogen up to 24 000 atm at 25°C. Effects indicative of significant absorption of hydrogen were obtained for alloys containing < 50 (atomic) % Pt. In general, results suggest that, with increasing platinum content, there is a gradual but continuous modification of the form of relationships between hydrogen content and the chemical potential of hydrogen and that at any given reference pressure, hydrogen solubility is always a decreasing function of platinum content.