Abstract: A sintered bearing exhibits a less of a hard iron alloy phase, and has an excellent wear resistance and cost performance under low-revolution and high-load use conditions. The sintered bearing contains Cu: 10 to 55% by mass, Sn: 0.5 to 7% by mass, Zn: 0 to 4% by mass, P: 0 to 0.6% by mass, C: 0.5 to 4.5% by mass and a remainder composed of Fe and inevitable impurities. An area ratio of a free graphite dispersed in a metal matrix of the bearing is 5 to 35%; an area ratio of a copper phase in the metal matrix of a bearing surface is not less than 30%; a porosity thereof is 16 to 25%; a hardness of an iron alloy phase in the matrix is Hv 65 to 200; and raw material powders employ at least one of a crystalline graphite powder and a flake graphite powder each having an average particle size of 10 to 100 ?m.

Abstract: A sintered bearing exhibits a less of a hard iron alloy phase, and has an excellent wear resistance and cost performance under low-revolution and high-load use conditions. The sintered bearing contains Cu: 10 to 55% by mass, Sn: 0.5 to 7% by mass, Zn: 0 to 4% by mass, P: 0 to 0.6% by mass, C: 0.5 to 4.5% by mass and a remainder composed of Fe and inevitable impurities. An area ratio of a free graphite dispersed in a metal matrix of the bearing is 5 to 35%; an area ratio of a copper phase in the metal matrix of a bearing surface is not less than 30%; a porosity thereof is 16 to 25%; a hardness of an iron alloy phase in the matrix is Hv 65 to 200; and raw material powders employ at least one of a crystalline graphite powder and a flake graphite powder each having an average particle size of 10 to 100 ?m.

Abstract: A sintered bearing exhibits less of a hard iron alloy phase, and has an excellent wear resistance and cost performance under low-revolution and high-load use conditions; and a method for producing such a sintered bearing. The sintered bearing contains Cu: 10 to 55% by mass, Sn: 0.5 to 7% by mass, Zn: 0 to 4% by mass, P: 0 to 0.6% by mass, C: 0.5 to 4.5% by mass and a remainder composed of Fe and inevitable impurities. An area ratio of a free graphite dispersed in a metal matrix of the bearing is 5 to 35%; a porosity thereof is 16 to 25%; a hardness of an iron alloy phase in the matrix is Hv 65 to 200; and raw material powders employ at least one of a crystalline graphite powder and a flake graphite powder each having an average particle size of 10 to 100 ?m.

Abstract: A sintered bearing exhibits less of a hard iron alloy phase, and has an excellent wear resistance and cost performance under low-revolution and high-load use conditions; and a method for producing such a sintered bearing. The sintered bearing contains Cu: 10 to 55% by mass, Sn: 0.5 to 7% by mass, Zn: 0 to 4% by mass, P: 0 to 0.6% by mass, C: 0.5 to 4.5% by mass and a remainder composed of Fe and inevitable impurities. An area ratio of a free graphite dispersed in a metal matrix of the bearing is 5 to 35%; a porosity thereof is 16 to 25%; a hardness of an iron alloy phase in the matrix is Hv 65 to 200; and raw material powders employ at least one of a crystalline graphite powder and a flake graphite powder each having an average particle size of 10 to 100 ?m.

Abstract: There is provided a Cu-based oil-impregnated sintered bearing which can be used for high-load applications such as an ABS system and a wiper motor system in automobile, can be manufactured at low cost, and is excellent in abrasion resistance and seizure resistance. The bearing contains 5 to 40% by mass of Ni, 3 to 15% by mass of Sn, 0.5 to 4.0% by mass of P, or further 0.3 to 5.0% by mass of a solid lubricant, and a remainder comprising Cu and inevitable impurities, and has a metallic structure in which a phase mainly composed of Ni and P is dispersed in a matrix, and has a 5 to 25% porosity.

Abstract: There is provided a Cu-based oil-impregnated sintered bearing which can be used for high-load applications such as an ABS system and a wiper motor system in automobile, can be manufactured at low cost, and is excellent in abrasion resistance and seizure resistance. The bearing contains 5 to 40% by mass of Ni, 3 to 15% by mass of Sn, 0.5 to 4.0% by mass of P, or further 0.3 to 5.0% by mass of a solid lubricant, and a remainder comprising Cu and inevitable impurities, and has a metallic structure in which a phase mainly composed of Ni and P is dispersed in a matrix, and has a 5 to 25% porosity.

Abstract: An ionic liquid formed of a cationic component and an anionic component characterized in that the cationic component contains fluorine atoms. When defects of an oxide film formed on the surface of a metal are anodized by a two-electrode system under existence of the ionic liquid, a current-voltage curve being obtained by applying a forward voltage from 0 V at a constant voltage rate of 1 V/s has an initial peak voltage and gives a withstand voltage of 50 V or above. This ionic liquid does not evaporate easily, exhibits hydrophobicity and low hygroscopicity, and has excellent metal oxide film-repairing ability.

Abstract: Disclosed is an energy storage device having high energy density and excellent power density. For example, electric double layer capacitors, redox capacitors, lithium ion electrolyte type capacitors and devices applying any of them are greatly improved in the energy density without deteriorating their advantages such as high power density, high charge/discharge efficiency and long life. Specifically disclosed is an energy storage device containing a positive electrode, a negative electrode and an electrolyte solution, which device is characterized in that a compound capable of performing a doping/dedoping reaction is present in the electrolyte solution.

Abstract: A small, thin, light piezoelectric transformer capable of large-capacity output is provided at low cost. In piezoelectric transformers adjacent to each other in the row direction, a lower electrode extends in the column direction in a supporting substrate, so as to connect a plurality of piezoelectric transformers arranged in the column direction. Referring to FIGS. 2(a) and 2(b) as well, the piezoelectric substrates of the piezoelectric transformers adjacent to each other in the row direction are connected via the lower electrode or an upper electrode wire that collectively connects the piezoelectric transformers arranged in the column direction. Meanwhile, the piezoelectric substrates of the piezoelectric transformers adjacent to each other in the column direction are connected via a right electrode wire or a left electrode wire that collectively connects the piezoelectric transformers arranged in the row direction.

Abstract: A conductive composition containing a conductive polymer and an ionic liquid. At least part of the conductive polymer is dispersed and/or dissolved in the ionic liquid. In such a conductive composition, at least part of the conductive polymer can be dissolved in the ionic liquid. Thus, the film formability, moldability, and workability of a conductive polymer, which is generally insoluble and infusible, can be increased. More specifically, the invention can provide a conductive composition containing a conductive polymer and an ionic liquid and having high film formability, moldability, and workability.

Abstract: An ionic liquid formed of a cationic component and an anionic component characterized in that the cationic component contains fluorine atoms. When defects of an oxide film formed on the surface of a metal are anodized by a two-electrode system under existence of the ionic liquid, a current-voltage curve being obtained by applying a forward voltage from 0 V at a constant voltage rate of 1 V/s has an initial peak voltage and gives a withstand voltage of 50 V or above. This ionic liquid does not evaporate easily, exhibits hydrophobicity and low hygroscopicity, and has excellent metal oxide film-repairing ability.

Abstract: The present invention provides an ionic liquid that can widely be used as materials of various electrical devices and solvents for various reactions and that exhibits hydrophobicity causing phase separation from water, and a process for producing the ionic liquid. The ionic liquid contains at least one anion selected from the group consisting of a fluoroalkylsulfate anion, a fluorocycloalkylsulfate anion, and a fluorobenzylsulfate anion and exhibits hydrophobicity causing phase separation from water. The halide ion concentration of the ionic liquid may be 70 ppm or less.

Abstract: A small, thin, light piezoelectric transformer capable of large-capacity output is provided at low cost. In piezoelectric transformers adjacent to each other in the row direction, a lower electrode extends in the column direction in a supporting substrate, so as to connect a plurality of piezoelectric transformers arranged in the column direction. Referring to FIGS. 2(a) and 2(b) as well, the piezoelectric substrates of the piezoelectric transformers adjacent to each other in the row direction are connected via the lower electrode or an upper electrode wire that collectively connects the piezoelectric transformers arranged in the column direction. Meanwhile, the piezoelectric substrates of the piezoelectric transformers adjacent to each other in the column direction are connected via a right electrode wire or a left electrode wire that collectively connects the piezoelectric transformers arranged in the row direction.