Characterisation of thin wall Pd-Ag rolled membranes

A thin wall Pd-Ag tube (thickness 50 micron) obtained by a procedure of cold-rolling and annealing of thin metal foils has been characterized in long-term tests for determining the hydrogen permeability under operating condition of a temperature range from 300°C to 400°C and transmembrane differential pressure from 50 to 100 kPa. During testing, the physical and mechanical stability of the rolled membranes have been observed and high hydrogen fluxes have been measured.