Abstract: A supported membrane for separation of hydrogen in a fuel cell includes a microetched foil to form a substrate. The supported membrane also includes a membrane metal of a metal alloy deposited over the substrate to form a thin metal supported membrane for hydrogen separation.

Abstract: A supported membrane for separation of hydrogen in a fuel cell includes a microetched foil to form a substrate. The supported membrane also includes a membrane metal of a metal alloy deposited over the substrate to form a thin metal supported membrane for hydrogen separation.

Abstract: This invention is a method for making a thin, flat metal membrane of palladium or palladium/copper alloy. It involves sputtering the metal onto a flat surface of a substrate under conditions such that a deposited film is essentially free of compressive and tensile stresses. The membrane that results upon removal of the film from the substrate, as by dissolving a parting layer therebetween, does not curl up.

Abstract: Method of resistance brazing of light metal alloys to form a corrosion resistant structural assembly, comprising: positioning a patch (thickness of about 0.05-0.25 mm and an aspect ratio of about one) of brazing filler metal between and in contact with superimposed light metal (i.e., aluminum, titanium) alloy structural workpieces to define a joining spot, said filler metal consisting of 7-13% silicon, substantial absence of magnesium and copper for aluminum workpieces, and the balance said light metal; while applying high pressure to force the workpieces together at the joining spot to achieve a structural joint, resistively heating the patch to melting without softening the workpieces, except at interfaces with the filler metal, by flowing an electrical current through the patch and aligned portions of the workpieces under ambient conditions and in the absence of flux, the heating and pressure being sufficient to mechanically break up and eliminate any oxides in the workpieces at the joining spot.