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Power Corporation, USA Here a solid oxide fuel cell electrode is produced by a sintering process. An underlayer is applied to the electrolyte of a solid oxide fuel cell in the form of a slurry, and dried. An overlayer is applied to the underlayer, and dried. The dried under-and overlayers are then sintered to form a fuel electrode. The two layers comprise a combination of electrode metal and stabilised zirconia, with the overlayer comprising a greater percentage of electrode metal. The use of more stabilised zirconia in the underlayer provides good adhesion to the electrolyte, while the use of more electrode metal in the overlayer provides good electrical conductivity. The sintered electrodes exhibit favourable performance characteristics, including good porosity, adhesion, electrical conductivity and freedom from degradation.
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This gasket arrangement is designed for use as a replacement inlet manifold gasket on used vehicles. It is specifically intended for use with corroded or pitted flanges. A shim ( 36) is used to cover the damaged surface. An adhesive layer ( 14) is used to seal the shim to the damaged surface.
piston for operating a valve seat arrangement. This switches the compressed air flow between several external connectors. The control piston may be pressurized for axial positioning by means of at least one electromagnetic pilot valve housed in a pilot valve housing. The pilot valve housing is detac