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1. 发明专利

JPH041445B2 失效
公开(公告)号：JPH041445B2
公开(公告)日：1992-01-13
申请号：JP19557084
申请日：1984-09-18
申请人： FUJIKURA LTD
发明人： SADAKATA NOBUYUKI , KONO TSUKASA , IKENO YOSHIMITSU , SUGIMOTO MASARU
IPC分类号： H01B12/16 , H01B12/02 , H01B13/00

2. 发明专利

JPH02109214A MANUFACTURE OF COMPOUND SUPERCONDUCTIVE CABLE 失效
公开(公告)号：JPH02109214A
公开(公告)日：1990-04-20
申请号：JP26200388
申请日：1988-10-18
申请人： FUJIKURA LTD
发明人： SUGIMOTO MASARU , KONO TSUKASA , IKENO YOSHIMITSU , GOTO KENJI
IPC分类号： H01B12/10 , H01B13/00
摘要： PURPOSE:To suppress coupling currents tending to flow to metallic ground at AC application, to decrease AC loss, and to enable the content of magnetic elements to be adjusted by providing plural storage parts in parent material so as to make the metallic ground wherein superconductive filament are dispersed and arranged contain magnetic elements. CONSTITUTION:Long parent material 10 which consists of material that contains at least one element among plural elements constituting a superconductive intermetallic compound and wherein storage part 11 such as grooves are formed in the length direction is prepared, and core materials 12 which contains one or more kinds of elements among magnetic elements such as Fe, Ni, Cr, Mn, etc., are set in these storage parts 11 so as to form a compound substance 13. After collecting these compound substances 13 in plural numbers, processings of reducing the diameter are done required times so as to form an element wire 20, and a plated layer 20a consisting of residual elements among elements constituting an intermetallic compound is formed around this element wire 20, and further diffusion heat treatment is applied so as to generate a superconductive intermetallic compound. Hereby, coupling currents at AC application is suppressed, and also by adjusting the size and the number of core materials to be set the additive amounts of magnetic elements can be adjusted whereby a superconductive cable excellent in characteristics can be obtained.

3. 发明专利

JPH02109212A MANUFACTURE OF COMPOUND SUPERCONDUCTIVE CABLE 失效
公开(公告)号：JPH02109212A
公开(公告)日：1990-04-20
申请号：JP26200188
申请日：1988-10-18
申请人： FUJIKURA LTD
发明人： SUGIMOTO MASARU , KONO TSUKASA , IKENO YOSHIMITSU , SADAKATA NOBUYUKI , GOTO KENJI
IPC分类号： H01B12/10 , H01B12/00 , H01B13/00
摘要： PURPOSE:To make the cable excellent in stabilization of superconductive characteristics, to make it small in AC coupling loss at AC current application, and to enable miniaturization and lightening by compounding stabilizing material made of pure copper in a superconductive cable, and making metallic ground where superconductive fibers are dispersed and arranged contain magnetic elements. CONSTITUTION:A diffusion preventive layer 11 is arranged around stabilizing material 10 made of copper so as to form a compound substance 12, and a plurality of insitu-rods which contain magnetic elements in metallic ground wherein dendrites of at least one element among plural elements which constitute a superconductive intermetallic compound are dispersed are arranged outside this compound substance 12. Further, those are covered with a metallic pipe 14, and then the diameter is reduced so as to make an element wire 15, and a plated layer 16 which contains residual elements among plural elements which constitute the superconductive intermetallic compound is formed around this element wire 15 so as to form a plated element wire 17. Next, diffusion heat treatment is applied to this plated element wire 17, whereby the elements of the plated layer 16 are diffused into the element wire so as to generated superconductive fibers. Hereby, a superconductive cable which is excellent in stability of superconductive characteristics and is miniaturized and lightened as well can be obtained.

4. 发明专利

JPH024931A MANUFACTURE OF NB3X SUPER CONDUCTING MATERIAL 失效
公开(公告)号：JPH024931A
公开(公告)日：1990-01-09
申请号：JP15575688
申请日：1988-06-23
申请人： FUJIKURA LTD
发明人： SUGIMOTO MASARU , KONO TSUKASA , IKENO YOSHIMITSU , SADAKATA NOBUYUKI
IPC分类号： B21C1/00 , C22C1/00 , H01B12/10 , H01B13/00
摘要： PURPOSE:To stably manufacture the title material having high critical temp. by surrounding the outer circumference of the core material in an Ag-X alloy, subjecting it to wire drawing and heating and diffusing an X element in an Ag-X alloy into Nb. CONSTITUTION:At the time of manufacturing an Nb3X (X denotes Al or Ga) superconducting material, a core material 10 made of an Ag-X alloy is inserted into an Nb pipe 11 and Cu or alloy 12 such as Cu-Ni and Cu-Be is gave off around its outer circumference to form a composite body 13, which is thereafter subjected to reduction by swaging, etc., to manufacture a primary element wire 14. The plurally assembled above element wires 14 are inserted into a pipe body 15 prepd. by Cu, Cu-Ni, Cu-Be, etc., and are subjected to reduction once more to prepare a secondary element wire 16. The plural above element wires 16 are inserted again into a pipe body 17 made of a Cu-Ni alloy and are subjected to reduction into a composite body 18. The secondary element wires 16 furthermore assembled are inserted into a diffusion- prevention pipe 19 made of Ta or Nb and its outer circumference is furthermore coated with a coating pipe 20 made of pure copper, which is reduced into the final diameter to form a wire rod 21. The wire rod 21 is heated to 600 to 1000 deg.C in an inert gas to diffuse X in the Ag-X alloy into Nb, by which the Nb3X super conducting wire rod A having high critical temp. can be manufactured.

5. 发明专利

JPH01282106A PRODUCTION OF OXIDE SUPERCONDUCTOR, AND SUBSTRATE FOR THE SUPERCONDUCTOR 失效
公开(公告)号：JPH01282106A
公开(公告)日：1989-11-14
申请号：JP11227888
申请日：1988-05-09
申请人： FUJIKURA LTD
发明人： MAEJIMA SEIJU , SARUWATARI KOICHI , OSANAI YUTAKA , KONO TSUKASA , IKENO YOSHIMITSU , SADAKATA NOBUYUKI , NAKAGAWA MIKIO , SUGIMOTO MASARU
IPC分类号： H01L39/02 , C01B13/14 , C01G1/00 , C04B41/89 , C23C24/08 , C23C28/04 , C25D11/18 , H01B12/02 , H01B13/00
摘要： PURPOSE:To form a superconductor having a sufficient thickness and superior superconducting characteristics in a process for forming an oxide superconductor on the surface of a substrate by forming an Al layer on the surface of the substrate, forming a porous layer by anodizing the Al layer, then forming a superconductor layer on the porous layer. CONSTITUTION:An Al layer 2 is formed on the surface or a substrate 1, then a porous layer 3 is formed by anodizing the Al layer 2. Then, a layer 5 coated with powder of a precursor of a superconductor or a superconductor is formed on the porous layer 3, and the coated layer 5 is sintered by heat-treating the substrate 1 thereafter to form thus a superconductor layer 6. In this case, such substrate obtd. by heating a substrate 1 having the porous layer 3 formed thereon at >=1100 deg.C in O2 atmosphere transforming thus the Al layer 2 to a thermally stable alpha-alumina layer, is preferred for the prepn. of the superconductor. A superconductor having a larger film thickness and superior superconducting characteristics is obtd. by filling an oxidizing agent 7 into pores 4 of the porous layer 3 prior to the formation of the coated layer 5, then executing the formation and the heat-treatment of the coated layer in the above described process.

6. 发明专利

JPH01175123A MANUFACTURE OF PRECURSOR FOR MANUFACTURING OXIDE SUPERCONDUCTOR 失效
公开(公告)号：JPH01175123A
公开(公告)日：1989-07-11
申请号：JP33240687
申请日：1987-12-28
申请人： FUJIKURA LTD
发明人： KUME ATSUSHI , KONO TSUKASA , IKENO YOSHIMITSU , SADAKATA NOBUYUKI , SUGIMOTO MASARU , AOKI SHINYA , USUI TOSHIO , NAKAGAWA MIKIO , GOTO KENJI
IPC分类号： H01B13/00
摘要： PURPOSE:To safely manufacture a large quantity of precursor powder by generating a sol containing the elements constituting an oxide superconductor, spraying this sol from the upper section of a reaction chamber, heat-reacting it, then collecting it from the exhaust port at the lower section of the reaction chamber. CONSTITUTION:Compounds of the elements constituting an oxide superconductor are dissolved in a nitric acid solution, citric acid or the like is added to form a sol. The ammonia water is added to the sol until pH7.0 is attained to neutralize the sol. A heating furnace 2 is operated to heat a reaction chamber 1, the neutralized sol thus obtained is fed to an atomizer 3, the neutralized sol is sprayed into the reaction chamber 1. The sprayed neutralized sol is heated in the chamber 1 and gelatinized and dropped into a collecting container 4 through an exhaust port 6 as the fine grain-shaped precursor powder 8. When the sol is continuously sprayed, a large quantity of the precursor powder can be manufactured. The sol is heated and reacted in the reaction chamber of the heating furnace, thus no flame is generated by the sol.

7. 发明专利

JPH01175116A OXIDE SUPERCONDUCTING WIRE 失效
公开(公告)号：JPH01175116A
公开(公告)日：1989-07-11
申请号：JP33240387
申请日：1987-12-28
申请人： FUJIKURA LTD
发明人： IKENO YOSHIMITSU , SADAKATA NOBUYUKI , KONO TSUKASA , SUGIMOTO MASARU , NAKAGAWA MIKIO , AOKI SHINYA , USUI TOSHIO , GOTO KENJI , KUME ATSUSHI , YAMAGUCHI TAICHI
IPC分类号： H01B12/04
摘要： PURPOSE:To stably manufacture a superconducting wire with a high critical current density value by specifying the linear expansion coefficient of a metal used as the constituting material of a metal sheath. CONSTITUTION:A superconducting wire 1 is constituted of a core 2 made of an oxide superconductor and a tubular metal sheath 3 covering this core 2. A material with the linear expansion coefficient of 5X10 -10X10 / deg.C in the temperature range of 800-1000 deg.C is used for the metal sheath 3. In the core 2 sintered and manufactured by heat treatment during the production, the occur rence of cracks caused by the difference of the thermal expansion coefficient of the metal sheath 3 is prevented. The superconducting wire provided with this core has a stably high critical current density value.

8. 发明专利

JPH01169817A MANUFACTURE OF OXIDE SUPERCONDUCTIVE WIRE 失效
公开(公告)号：JPH01169817A
公开(公告)日：1989-07-05
申请号：JP32895287
申请日：1987-12-25
申请人： FUJIKURA LTD
发明人： MAEJIMA SEIJU , OSANAI YUTAKA , SARUWATARI KOICHI , KONO TSUKASA , IKENO YOSHIMITSU , SADAKATA NOBUYUKI , NAKAGAWA MIKIO , USUI TOSHIO , SUGIMOTO MASARU
IPC分类号： H01B12/06 , C25D13/02 , H01B13/00
摘要： PURPOSE:To form uniformly a dense superconductor layer over the whole wire by forming an electrodeposition layer of the premass powder of either oxide type superconductor or powder of specific oxide superconductor by electrophoretic deposition method, and then performing heat treatment according to necessary. CONSTITUTION:Electrophoretic deposition is made in an electrodeposition liquid in which either the premass powder of oxide superconductor or a powder of oxide superconductor of A-B-C-D type is dispersed, where A is one or more of the elements belonging to group IIIa on the Periodic Table such as Y, Sc, La, Yb, Er, Eu, Ho, Dy; B is one or more of the elements belonging to group IIa such as Be, Mg, Ca, Sr, Ba; C is Cu or two or more elements belonging to group Ib such as Cu, Ag, Au plus Nb including Cu; and D is one or more elements belonging to group VIb such as O, S, Se and the group VIIb such as F, Cl, Br including O. On the surface of a base material 10 an electrodeposition layer 11 is formed which shall contain elements constituting oxide superconductor, to be followed by heat treatment if necessary. Thereby an oxide superconductive wire is obtained which is equipped good close contact with superconductor layer and a high mechanical strength.

9. 发明专利

JPH01153565A PRODUCTION OF OXIDE SUPERCONDUCTOR 失效
公开(公告)号：JPH01153565A
公开(公告)日：1989-06-15
申请号：JP30927087
申请日：1987-12-07
申请人： FUJIKURA LTD
发明人： NAKAGAWA MIKIO , KONO TSUKASA , IKENO YOSHIMITSU , SADAKATA NOBUYUKI , SUGIMOTO MASARU , AOKI SHINYA , USUI TOSHIO , YAMAGUCHI TAICHI , KUME ATSUSHI , GOTO KENJI
IPC分类号： C01B13/14 , C01G1/00 , C01G3/00 , C04B35/00 , C04B35/45 , H01B13/00 , H01L39/24
摘要： PURPOSE:To produce the title superconductor having excellent superconducting characteristics, by separately heat-treating powdery raw materials containing the elements constituting an oxide superconductor, mixing the heat-treated raw materials and calcining and sintering the mixture. CONSTITUTION:One or more powdery raw materials containing the elements constituting an oxide superconductor, e.g. Y2O3, BaCO3 and CuO are separately heat-treated at a temperature above the calcination temperature and below the melting point of the powdery raw material and the heat-treated materials are slowly cooled and mixed with each other to obtain a powdery mixture. The powdery mixture is crushed, calcined in an oxygen-containing atmosphere at 500-1,000 deg.C for 1-several tens hr, formed into a prescribed form by powder molding and sintered in an oxygen-containing atmosphere at 850-1,100 deg.C for 1-several tens hr.

10. 发明专利

JPH01149308A SUPERCONDUCTIVE ELECTRIC CIRCUIT 失效
公开(公告)号：JPH01149308A
公开(公告)日：1989-06-12
申请号：JP30704687
申请日：1987-12-04
申请人： FUJIKURA LTD
发明人： MAEJIMA SEIJU , SARUWATARI KOICHI , OSANAI YUTAKA , KONO TSUKASA , IKENO YOSHIMITSU , SADAKATA NOBUYUKI , SUGIMOTO MASARU , NAKAGAWA MIKIO
IPC分类号： H01B12/06 , H01F6/00 , H01L39/06 , H05K1/09
摘要： PURPOSE:To enhance the close contact of a ceramic base board with a superconductive circuit by forming the superconductive circuit consisting of an oxide superconductor along a circuit pattern to be formed on the copper oxide layer on the surface of the base board. CONSTITUTION:A superconductive electric circuit 1 is formed along a circuit pattern to be formed a superconductive circuit 4 consisting of an oxide superconductor on a copper oxide layer 3, which consists of CuO and is formed on the surface of a base board made of ceramic such as alumina. Example of ceramic is a sintering or a molten molding of various ceramic material, and particularly a ceramic consisting impurities can also be used. Example of the oxide type superconductor is a one of Y-Ba-Cu-O type or A-B-Cu-O type (where A is one or more of the elements belonging to the IIIa group in the Periodic Table such as Y, La, while B is one or more of the elements belonging to the IIa group such as Ba, Sr). This accomplishes good close contact of the copper oxide layer with superconductive circuit to enhance the mechanical strength of the superconductive electric circuit.

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