Abstract: A method of diffusion bonding metal or metal alloy containing workpieces, comprises (a) coating the bonding surfaces of the metal or metal alloy containing workpieces with a layer of a coating material, (b) abrading the coated bonding surfaces to remove surface oxide, the coating material being in liquid form, (c) removing excess coating material or excess abraded metal or metal alloy containing workpiece material from the coated bonding surfaces, and (d) diffusion bonding the coated bonding surfaces of the metal or metal alloy containing workpieces together. The coating material is operable to form a stable barrier on the bonding surfaces of the metal or metal alloy containing workpieces under ambient conditions, and evaporates from the bonding surfaces under diffusion bonding conditions. There is also a bonded workpiece formed using the method of diffusion bonding metal or metal alloy containing workpieces.

Abstract: A method of diffusion bonding metal or metal alloy containing workpieces, comprises (a) coating the bonding surfaces of the metal or metal alloy containing workpieces with a layer of a coating material, (b) abrading the coated bonding surfaces to remove surface oxide, the coating material being in liquid form, (c) removing excess coating material or excess abraded metal or metal alloy containing workpiece material from the coated bonding surfaces, and (d) diffusion bonding the coated bonding surfaces of the metal or metal alloy containing workpieces together. The coating material is operable to form a stable barrier on the bonding surfaces of the metal or metal alloy containing workpieces under ambient conditions, and evaporates from the bonding surfaces under diffusion bonding conditions. There is also a bonded workpiece formed using the method of diffusion bonding metal or metal alloy containing workpieces.

Abstract: Apparatus and methods for providing displays based upon the principle of photoluminescent quenching are described. The invention includes a method of displaying information using photoluminescence quenching, the method comprising providing an optoelectronic display comprising a photoluminescent material between a pair of electrodes, providing illumination for the photoluminescent material to cause the photoluminescent material to photoluminescence, and biasing the electrodes to at least partially quench the photoluminescence.

Abstract: A fuel cell assembly comprising a fuel cell incorporated in a composite laminate structure, the composite laminate structure comprising a core material within which the fuel cell is embedded. The fuel cell comprises an electrolytic membrane having first and second faces, and first and second electrodes disposed adjacent to the respective faces of the electrolytic membrane. The first and second electrodes are connectable to an electric circuit. The core material provides support to the fuel cell embedded therein and fluid communication through the core material, to enable the passage of one or more fluids to the first and second electrodes.

Abstract: Apparatus and methods for providing displays based upon the principle of photoluminescent quenching are described. The invention includes a method of displaying information using photoluminescence quenching, the method comprising providing an optoelectronic display comprising a photoluminescent material between a pair of electrodes, providing illumination for the photoluminescent material to cause the photoluminescent material to photoluminescence, and biasing the electrodes to at least partially quench the photoluminescence.

Abstract: A novel catalyst comprising a Pt--M alloy wherein M is one or more metals selected from the transition metal elements or from Groups IIIA or IVA of the Periodic Table in "Handbook of Chemistry and Physics" 64th Edition, CRC Press, and Y wherein Y is a bronze forming element or an oxide thereof, characterised in that the Pt--M alloy is in intimate contact with Y, and provided that M is not Ru if Y is WO.sub.3 is disclosed and which may be used as a poison tolerant catalyst for use in fuel cells, specifically as the anode of a PEM fuel cell.