Effects of thin film Pd deposition on the hydrogen permeability of Pd60Cu40 wt% alloy membranes

The Pd60Cu40 wt% membranes coated with a ~1400 nm and ~800 nm thick Pd thin film retained an almost pure Pd surface throughout cycling between 50 and 450 °C with a feed and permeate hydrogen pressure of 445 and 100 kPa, respectively. For the deposition technique and test conditions used throughout this work, these surface modified Pd-Cu membranes appear to stabilise the Pd thin films upon cycling across the critical temperature of 295 °;C.