Abstract: A ceramic heater includes a ceramic resistor, at least one metallic film, and at least one foam metal member. The at least one metallic film is formed on at least one surface, of the ceramic resistor, which is assigned as at least one electrode plane. The at least one foam metal member is formed in a plate-like shape. The at least one foam metal member covers and is attached to the at least one metallic film.

Abstract: A composite porous body, a gas diffusion layer member of a polymer electrolyte fuel cell, a cell member for the polymer electrolyte fuel cell, and manufacturing methods thereof are provided. The composite porous body is a metallic composite porous body in which a sheet-like metal portion composed of a composite porous body having a three-dimensional mesh structure and a resin portion extending in an in-plane direction of the metal portion are integrally formed with each other. The gas diffusion layer member of a polymer electrolyte fuel cell is composed of a composite porous body in which a sheet-like metal portion composed of a composite porous body having a three-dimensional mesh structure and a resin portion extending in an in-plane direction of the metal portion are integrally formed with each other. Also, the gas diffusion layer member of a polymer electrolyte fuel cell has a separator plate, and the conductive porous body placed on at least one surface of the separator plate.

Abstract: [Problems] Miniaturization and weight-saving of a fuel cell including a plurality of unit cells are intended together with higher integration of the unit cells. [Means for Solving Problems] A pair of electrode sheet 100a, 100b, each having a plurality of fuel electrodes 110a, 110b or a plurality of oxidant electrodes 112a, 112b supported by a resin section 102, are disposed on a single plane on the respective surfaces of a solid electrolyte membrane 105 to configure a plurality of unit cells. The fuel electrode and the oxidant electrode of the adjacent two unit cells existing on the respective surfaces of the solid electrolyte membrane are connected in series by using an electroconductive member penetrating the solid electrolyte membrane. Since the electroconductive member 108 extends along the stacking direction of the cell, no excess space is required to achieve the miniaturization of the fuel cell.

Abstract: A composite porous body, a gas diffusion layer member of a polymer electrolyte fuel cell, a cell member for the polymer electrolyte fuel cell, and manufacturing methods thereof are provided. The composite porous body is a metallic composite porous body in which a sheet-like metal portion composed of a composite porous body having a three-dimensional mesh structure and a resin portion extending in an in-plane direction of the metal portion are integrally formed with each other. The gas diffusion layer member of a polymer electrolyte fuel cell is composed of a composite porous body in which a sheet-like metal portion composed of a composite porous body having a three-dimensional mesh structure and a resin portion extending in an in-plane direction of the metal portion are integrally formed with each other. Also, the gas diffusion layer member of a polymer electrolyte fuel cell has a separator plate, and the conductive porous body placed on at least one surface of the separator plate.

Abstract: Wire rods containing an adequate quantity of C within the range from 0.70 to 1.00%, Si from 0.5 to 3.0%, Mn from 0.30 to 2.0%, Cr from 0.10 to 0.5%, Al from 0.030 to 0.10% and N from 0.004 to 0.015% and unavoidable impurities, and with Fe for all the rest are subjected to re-heat patenting to increase the tensile strength to 135 kgf/mm.sup.2 or higher, then are drawn by adequately selecting the conditions, number of times of drawing in the range from 7 to 16 times, drawings speed from 50 to 550 m/minute, extent of drawing form 70-90, and water cooling immediately after each drawing to manufacture steel wires of high strength and high toughness.The wires are used as PC wires, steel wires for skewed bridge cables, steel stranded wires, spring wires, main cable wires for extra-long suspension bridge large diameter wires for core of aluminum cables steel reinforced (transmission cable), and as galvanized steel wires for such applications.