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51. 发明专利

JPH069296A METHOD FOR FORMING OXIDE SUPERCONDUCTOR FILM AND OXIDE SUPERCONDUCTOR MEMBER 失效
公开(公告)号：JPH069296A
公开(公告)日：1994-01-18
申请号：JP5744592
申请日：1992-02-11
申请人： KOKUSAI CHODENDO SANGYO GIJUTS , HITACHI LTD , NGK SPARK PLUG CO
发明人： USHIDA TAKAHISA , HIGASHIYAMA KAZUHISA , HIRABAYASHI IZUMI , TANAKA SHOJI
IPC分类号： C01G1/00 , C01G3/00 , C04B35/00 , C04B35/45 , C30B25/02 , C30B29/22 , H01B12/06 , H01B13/00 , H01L39/24
摘要： PURPOSE:To form an oxide superconductor film having a crystal orientation readily controlled in a definite direction at an arbitrary place and having smooth surface advantageous to preparation of a device, especially in the case of orientation with (c) axis parallel to a substrate. CONSTITUTION:Vaporized organometallic raw materials are mixed so as to become a prescribed metal composition and the mixed raw materials are vaporized and brought into contact with the surface of the heated substrate and an oxide superconductor film such as a Y-Ba-Cu-O based film is formed on the substrate by a chemical vapor phase growth method. At this time, laser beams, especially ultraviolet rays are irradiated onto the substrate in the midst of formation of the oxide superconducting film. Thereby, an irradiated part having an orientation [e.g. (a) axis orientation] with (c) axis parallel to the substrate in the crystal orientation direction and having smooth surface in such degree as not to observe unevenness in electron microscope photographs enlarged in 14000 magnification and consisting of an oxide superconducting film is formed in a matrix of a nonirradiation part.

52. 发明专利

JPH02157108A METHOD FOR SYNTHESIZING OXIDE SUPERCONDUCTING FILM 失效
公开(公告)号：JPH02157108A
公开(公告)日：1990-06-15
申请号：JP31004188
申请日：1988-12-09
申请人： HITACHI LTD
发明人： HIGASHIYAMA KAZUHISA , NAMATAME TOSHIHIDE , SAITO YUKIO
IPC分类号： C01G3/00 , B01J35/02 , C01B13/14 , C01G1/00 , C23C16/30 , C30B29/22 , H01B12/06 , H01B13/00 , H01L39/24
摘要： PURPOSE:To synthesize an oxide superconducting film free of impurities at a high rate by forming a substrate to be deposited with an oxide superconducting film with a material acting as an oxidation catalyst. CONSTITUTION:When an oxide superconducting film is synthesized, the substrate to be deposited with the film is formed with the material acting as an oxidation catalyst (at least one kind among groups VIII and Ib transition elements of the periodic table, vanadium oxide and molybdenum oxide). At this time, the grains of the material acting as an oxidation catalyst having 1nm-1mu size are used, and the substrate in the form of tape, wire, pipe, and disk is used. When the surface of the substrate is irradiated with UV rays in the film synthesis, the action of the material acting as an oxidation catalyst is promoted. By this method, an oxide superconducting film free of impurities is formed at a high rate, even when the film is formed at low temp.

53. 发明专利

JPH01311571A INNER REFORMING CATALYST MOLDED BODY FOR FUEL CELL 失效
公开(公告)号：JPH01311571A
公开(公告)日：1989-12-15
申请号：JP13933888
申请日：1988-06-08
申请人： HITACHI LTD , TOKYO ELECTRIC POWER CO
发明人： HIGASHIYAMA KAZUHISA , YOSHIOKA SUSUMU , MURAKAMI TADATAKA , SHIMODA MAKOTO , NISHIKAWA NOBUYUKI , ARAKI NAMIO , ITOU SHINGO
IPC分类号： H01M8/02 , H01M8/06
摘要： PURPOSE:To prevent the infiltration of an electrolyte via a member by forming a net-shaped catalyst holding material fixed on the opening section of a frame and a catalyst layer filled and formed on the opening section to bury the holding material. CONSTITUTION:Ribs 6 are arranged perpendicularly to an inner frame 5. The ribs are welded only to outer frames 4 and the inner frame 5 and are not in direct contact with catalysts 1. A net-shaped holding material 9 is installed in advance in a catalyst filling section surrounded by the outer frames and the inner frame, it improves the strength of the catalyst layer as a core material. The rib material surface serving as the main path for the infiltration of an electrolyte is put in contact with only the frame surrounding the catalyst layer. The catalysts are in contact with the frame via the very fine holding material 9. The primary function of ribs to hold an electrolyte plate is maintained, on the other hand the infiltration of the electrolyte into the catalyst layer can be reduced to the negligible level.

54. 发明专利

JPS6430113A MANUFACTURE OF OXIDE SUPERCONDUCTIVE MATERIAL 失效
公开(公告)号：JPS6430113A
公开(公告)日：1989-02-01
申请号：JP18336287
申请日：1987-07-24
申请人： HITACHI LTD
发明人： KUMAGAI TERUO , HIGASHIYAMA KAZUHISA , OKADA HIDEO , YAMASHITA HISAO , KAMO YUICHI , MATSUDA SHINPEI , HISHINUMA TAKAO
IPC分类号： H01L39/12 , B28B1/00 , H01B12/02 , H01B13/00 , H01F6/06
摘要： PURPOSE:To obtain a superconductive material with a high superconductive critical property by impregnating one or more solution selected from solutions of a superconductive substance, and of a superconductive material and a superconductor precursor, in the clearances of a superconductor formed beforehand, and baking and sintering it to fill up the clearances making the true density up to 80% or higher. CONSTITUTION:A superconductive material is impregnated to a superconductive material solved in the water, in a solution solved in a solvent such as ethanol, or in a slurry of fine powder presenting a superconductive property, or held in such a solution by hydrolyzing after impregnation by using an alkoxide salt to the superconductive material. After impregnating or holding in such a way, it is baked and sintered. Consequently, the filling rate and the sintering rate of the superconductive substance of a formation body can be raised up to 80% or more without deteriorating the superconductive property of the substance. It can be possible to give a high current density to a superconductive material accordingly.

55. 发明专利

JPS63318020A METHOD FOR FORMING OXIDE SUPERCONDUCTOR 失效
公开(公告)号：JPS63318020A
公开(公告)日：1988-12-26
申请号：JP15119187
申请日：1987-06-19
申请人： HITACHI LTD
发明人： OKADA HIDEO , KUMAGAI TERUO , HIGASHIYAMA KAZUHISA , YAMASHITA HISAO , KAMO YUICHI
IPC分类号： B28B3/20 , H01B12/04 , H01B13/00
摘要： PURPOSE:To provide a wire- or tape-shaped superconductor of oxide type excel lent in processing easiness and flexibility by turning superconductive material of oxide type into powder, adding thereto binder, solvent, etc., followed by kneading for making it in paste, and performing extrusion molding. CONSTITUTION:Binder, solvent, plastitizer, ceramic fiber, metal fiber, and one or more types of metal powder are added to a power-formed superconductor of oxide type, followed by kneading, for making it in paste, and this is subjected to extrusion molding. That is, a certain solvent binder and plastitizer are added to the material powder, followed by kneading and the resulting paste is extruded by an auger machine to turn it into tape, cylinder, or honeycomb. Particles of the material powder will be 100 mesh pass or preferably be 200 mesh pass, and the binder to be added as a binding agent uses a one having a proper stickiness and flexibility at the time of extrusion molding, e.g., organic, inorganic binder, etc. This allows easy forming of superconductor of oxide type into wire or tape.

56. 发明专利

JPS63291481A SUPERCONDUCTING SUBSTANCE/REFRIGERANT CONTACT DEVICE 失效
公开(公告)号：JPS63291481A
公开(公告)日：1988-11-29
申请号：JP12587287
申请日：1987-05-25
申请人： HITACHI LTD
发明人： HIGASHIYAMA KAZUHISA , KUMAGAI TERUO , OKADA HIDEO , KAMO YUICHI , YAMASHITA HISAO , AIHARA KATSUZO , MATSUDA SHINPEI , HISHINUMA TAKAO
IPC分类号： H01L39/04 , F25D3/10 , H01F6/04
摘要： PURPOSE:To efficiently bring a superconductor into contact with a refrigerant and to sufficiently perform the characteristics of the superconductor substance by pulverizing granular oxide superconducting material in a powder state to bring it into contact with the refrigerant in a slurry state or to mold the material as a molding, and using the molding as a stationary floor to bring it into contact with the refrigerant. CONSTITUTION:When a superconducting substance and a refrigerant are used as a slurry, slurry solution made of the powderlike superconducting substance 4 and the refrigerant 5 is fed by a circulation pump 6 under a magnet 1 to maintain a superconducting state, and lines 2 of magnetic force are shielded by a Meissner effect. Then, the substance is temporarily collected by a filter 3, and only the refrigerant is fed under the magnet. Thus, the Meissner effect is eliminated, and the lines of magnetic force pass directly under the magnet. Thus, the refrigerant is used in a sealing system, and the substance is formed in a slurry state with the refrigerant to freely control the operation of a magnetic field upon movement of the substance. Since it is of the sealing system, the loss amount of the refrigerant is less. Further, the substance 4 of the molding is used as the stationary floor and the refrigerant 5 is passed to the floor, thereby exhibiting superconducting characteristic.

57. 发明专利

JPS62158906A LOW NOX COMBUSTION BURNER FOR COAL AND WATER SLURRY 失效
公开(公告)号：JPS62158906A
公开(公告)日：1987-07-14
申请号：JP62986
申请日：1986-01-08
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： AZUHATA SHIGERU , HIGASHIYAMA KAZUHISA , NARATO KIYOSHI , KOBAYASHI YOSHINOBU , ARASHI NORIO , INADA TORU , SOMA KENICHI , OTSUKA KEIZO
IPC分类号： F23D99/00 , F23C99/00
摘要： PURPOSE:To get a stable flame of CWM at the same time to improve an efficiency of combustion as well as to reduce NOX by a method wherein two preliminary combustion chambers are arranged in a coal and water slurry (CWM) burner. CONSTITUTION:CWM of fuel is injected from a nozzle 1 and turned into fine particles and then ignited at a primary combustion chamber 4 constituted by a block 7 of ceramics installed around an outer circumference of the nozzle 1. The fuel is ignited with secondary air within a cylindrical secondary preliminary combustion chamber 5 at downstream side and thereafter the fuel is completely ignited with ternary air within a combustion furnace. When the primary preliminary combustion chamber 2 is made of ceramic block 7 having a high thermal accumulation property instead of steel, resulting in that the heat is accumulated in the block during a preliminary heating operation and further the ignition of CWM is facilitated with this heat. With the installation of the secondary preliminary combustion chamber 5, a formation of the low air flame is facilitated and an effect of a low NOX combustion can be improved.

58. 发明专利

JPS6298567A FUEL CELL 失效
公开(公告)号：JPS6298567A
公开(公告)日：1987-05-08
申请号：JP23732585
申请日：1985-10-25
申请人： HITACHI LTD
发明人： SHIMODA MAKOTO , YOSHIOKA SUSUMU , MURAKAMI TADATAKA , HIGASHIYAMA KAZUHISA
IPC分类号： H01M8/02 , H01M8/06 , H01M8/24
摘要： PURPOSE:To make current density distribution and temperature distribution in a fuel cell uniform by forming an electrolyte plate, a fuel electrode, an oxidizing electrode, and a current collecting plate in a doughnut shape. CONSTITUTION:A doughnut-shaped fuel electrode 2 and a doughnut-shaped oxidizing electrode 3 are sticked on the both sides of a doughnut-shaped electrolyte plate 1. Doughnut-shaped current collecting plates 5 are sticked on the surfaces, which are not in contact with the electrode plate, of the fuel electrode 2 and oxidizing electrode 3 to form a cell. The cell is stacked to a separator 4 having supply and exhaust holes of fuel and oxidizing agent in its center and periphery. A catalyst 6 for internal reforming is sticked to a separator on the fuel electrode side. CH4 serving as fuel is supplied through a fuel supply hole 8, and passes through a gas passage as shown in an arrow 9, then is exhausted from a fuel gas exhaust hole 10. The fuel gas keeps a reducing atmosphere in the outer frame 11 of the separator. On the other hand, an oxidizing agent is supplied through an oxidizing agent supply hole 12, and passes through a cathode as shown in an arrow 13, and is exhaust from an exhaust hole 14. The fuel exhaust hole 10 and the oxidizing agent exhaust hole 13 are separated each other.

59. 发明专利

JPS6226413A SPRAY METHOD OF COAL AND WATER SLURRY BURNER 失效
公开(公告)号：JPS6226413A
公开(公告)日：1987-02-04
申请号：JP16579685
申请日：1985-07-29
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： KOBAYASHI YOSHINOBU , AZUHATA SHIGERU , ARASHI NORIO , NARATO KIYOSHI , INADA TORU , SOMA KENICHI , HIGASHIYAMA KAZUHISA , OTSUKA KEIZO , MASAI TADAHISA
IPC分类号： F23D99/00 , F23C99/00
摘要： PURPOSE:To be able to reduce the generation of NOx when CWM is burnt, by making spouting angle of secondary air smaller than that of an atomizer and also air ratio of secondary air above the theoretical air ratio 0.3. CONSTITUTION:A burner comprises an atomizer 11 spouting CWM (coal and water slurry) and two air nozzles spouting air, and at the periphery of the atomizer 11, secondary air nozzles 14 is installed to make concentric circle with the atomizer 11 and spouting angle of secondary air G is made smaller than that of the atomizer 11. Here, when air ratio (actual air amount to the theoretical air amount for complete burning) of secondary air amount to total air amount for burning is made above 0.3, then the generation of NOx is reduced and CO and unburnt combusibles in ash are reduced in quantity and high efficiency in burning rate is obtained at the same time.

60. 发明专利

JPS61207497A METHOD OF SPRAYING SLURRY OF COAL IN WATER 失效
公开(公告)号：JPS61207497A
公开(公告)日：1986-09-13
申请号：JP4834185
申请日：1985-03-13
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： HIGASHIYAMA KAZUHISA , ARASHI NORIO , AZUHATA SHIGERU , NARATO KIYOSHI , SOMA KENICHI , INADA TORU , KOBAYASHI YOSHINOBU , OTSUKA KEIZO , HISHINUMA TAKAO
IPC分类号： C10L1/32
摘要： PURPOSE:To provide the title method capable of forming a fine coalwater spray particles without increase in injection speed from a spray nozzle for improvement in ignitability and combustion characteristics, by adding a specific solid additive to a slurry of a coal in water and conducting a spray combustion of the slurry. CONSTITUTION:In conducting a spray combustion of a slurry of a coal in water, a solid additive of which the thermal decomposition temperature is lower than or substantially the same as that of the coal is previously added to the slurry of a coal in water. The cracked gas generated by the thermal decomposition of the solid additive causes the burst of droplets of the slurry of a coal in water or the dried particles to be burst from the inside thereof. Although the solid additive (e.g.: calcium oxalate) is preferably those having a small solubility in water, those having a relatively large solubility in water may also be used when they can cause the deposition of a solid phase between the coal particles accompanying the evaporation of water and thermally decompose.

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