• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention provides an intermetallic compound-based, composite superconductor (1) suitable for use in superconducting coils for a high magnetic field, where the superconductive part is formed by thermal diffusion reaction, and which has such a structure that a metal layer (7) of high melting point and high resistance is provided at the outermost periphery of a strand comprising a plurality of filaments (2) containing a superconductive compound formed by diffusion reaction with the surrounding matrix (3), a stabilizer (5) surrounding the matrix (3), and a diffusion barrier (4) provided between the stabilizer (5) and the matrix (3) for preventing diffusion of superconductive com- poundforming element in the matrix (3) from diffusion into the stabilizer (5) during the diffusion reaction, and the coupling current induced between the intermetallic compound-based superconductive wire members can be reduced by the provision of the metal layer (7) of high melting point and high resistance. Furthermore, the superconductive parts can be formed by heat treatment, and the AC loss can be reduced thereby.
    公开号:SU1498403A3
    申请号:SU864028474
    申请日:1986-10-29
    公开日:1989-07-30
    发明作者:Ида Фумио；Тада Наофуми
    申请人:Хитачи, Лтд (Фирма)；
    IPC主号:
    专利说明:

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    This invention relates to intermetallic composite based composite superconductors for use in superconducting windings with a strong magnetic field, mainly in the superconducting windings of a nuclear reactor.
    The purpose of the invention is to reduce parasitic AC losses.
    Figs, 1 and 2 depict the schemes of the proposed composite superconductor, cross section.
    Fig. 1 shows a cross section of a cable core containing a plurality of fibers 1 consisting of a superconducting compound obtained by diffusion interaction with the surrounding matrix 2. The fiber groups are separated by a diffusion barrier 3 from stabilizer 4, which ... the surface with a layer of metal 5, incapable of diffusion into stabilizer 4 during the heat treatment of the superconductor and selected from niobium, tantalum, vanadium, chromium, molybdenum or tungsten.
    This structure of the composite superconductor / nickname allows for high-temperature heat treatment to carry out the diffusion reaction and allows for effective insulation, in general, it allows to reduce the parasitic current induced by cable conductor and, accordingly, to reduce parasitic AC losses .
    FIG. 2 shows a cross section of a cable core containing all
    ABOUT
    Elements, as in figure 1, but additionally containing a layer of secondary stabilizer, 6, consisting of copper or aluminum.
    These materials can be easily processed by drawing, which is a technological operation in the manufacture of a superconductor.
    On the surface of the secondary stabilizer 6 by chemical treatment, involving oxidation or sulphurization, the insulating layer 7 is formed: It consists of CuO oxides, or, for example, CuS sulfide.
    The invention makes it possible to drastically reduce parasitic AC losses, forming a stabilized composite superconductor suitable for strong magnetic fields (more than 10 T) and strong currents (more than 10 kA).
    This determines the practical possibility of producing large superconducting windings from such a superconductor, which possess high current stability of the superconducting circuit, even with large fluctuations of the magnetic field.
    Therefore, the use of such a superconductor can significantly reduce the consumption of expensive liquid gels, which gives a significant economic effect.
    权利要求:
    Claims (2)
    [1]
    Invention Formula
    J. Composite superconductor based on an intermetallic compound in the form of a cable core containing a plurality of fibers consisting of a superconducting compound obtained by diffusion interaction with the surrounding matrix, a stabilizer surrounding the matrix, and a diffusion barrier located between the stabilizer and the matrix to prevent stabilizer diffusion from the matrix of the component forming the superconducting compound in the process of diffusion interaction, characterized in that, in order to reduce the vapor AC current losses, on the outer surface of the cable core there is a layer of metal that is not capable of diffusion into the stabilizer during the heat treatment of the conductor of the conductor - niobium, tantalum, vanadium, chromium, molybdenum or tungsten.
    [2]
    2. A superconductor according to claim 1, characterized in that over the metal layer it further comprises a layer of secondary stabilizer consisting of copper or aluminum, the outer surface of which is chemically treated with an electrically insulating oxide layer or
    L
    sulfide material secondary stabilizer, with
    FIG. Z
    类似技术:
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    JPS59208704A|1984-11-27|Compound superconductive coil
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    Nakayama et al.1992|Alumina dispersion-strengthened copper alloy matrix Ti added Nb 3 Sn wire by the tube process
    JPH10247428A|1998-09-14|Oxide superconductive wire
    JPH05109323A|1993-04-30|Superconductive assembled conductor
    Iwasa1975|Recent developments in multifilament V 3 Ga & Nb 3 Sn wires in Japan
    同族专利:
    公开号 | 公开日
    JPS62103913A|1987-05-14|
    US4752654A|1988-06-21|
    EP0220738A1|1987-05-06|
    JPH0795406B2|1995-10-11|
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    RU2460175C1|2011-05-12|2012-08-27|Учреждение Российской академии наук Институт металлургии и материаловедения им. А.А. Байкова РАН|Superconducting composite material based on hts compounds and method of producing said material|
    RU2558117C1|2014-09-18|2015-07-27|Федеральное государственное бюджетное учреждение "Национальный исследовательский центр "Курчатовский институт"|Combined superconductor|GB1394724A|1972-08-04|1975-05-21|Atomic Energy Authority Uk|Superconducting members and methods of mahufacture thereof|
    DE2331962A1|1973-06-22|1975-01-16|Siemens Ag|METHOD FOR PRODUCING A SUPRAL CONDUCTOR WITH A SUPRAL CONDUCTING INTERMETALLIC JOINT FROM TWO ELEMENTS|
    US3958327A|1974-05-01|1976-05-25|Airco, Inc.|Stabilized high-field superconductor|
    FR2334182B1|1975-12-03|1981-12-04|Furukawa Electric Co Ltd|
    CH594961A5|1976-08-31|1978-01-31|Bbc Brown Boveri & Cie|
    US4205119A|1978-06-29|1980-05-27|Airco, Inc.|Wrapped tantalum diffusion barrier|
    US4330347A|1980-01-28|1982-05-18|The United States Of America As Represented By The United States Department Of Energy|Resistive coating for current conductors in cryogenic applications|
    JPS59191208A|1983-04-14|1984-10-30|Mitsubishi Electric Corp|Method of producing nb3sn superconductive conductor|
    JPS59191213A|1983-04-15|1984-10-30|Showa Electric Wire & Cable Co|Method of producing compound composite superconductive conductor|
    JPH0570246B2|1983-05-27|1993-10-04|Tokyo Shibaura Electric Co|EP0283313B1|1987-03-20|1994-02-23|Fujikura Ltd.|Method of producing oxide superconducting wire and oxide superconducting wire produced by this method|
    US5030616A|1987-07-28|1991-07-09|Sumitomo Electric Industries, Ltd.|Method for producing an elongated sintered article|
    US4965249A|1987-10-02|1990-10-23|U.S. Philips Corporation|Method of manufacturing a superconducting wire|
    DE68919913T3|1988-06-09|1998-07-30|Toshiba Kawasaki Kk|Composite superconducting wire and process for its manufacture.|
    US4927985A|1988-08-12|1990-05-22|Westinghouse Electric Corp.|Cryogenic conductor|
    US5021401A|1989-04-03|1991-06-04|Westinghouse Electric Corp.|Integrated production of superconductor insulation for chemical vapor deposition of nickel carbonyl|
    EP0409269B1|1989-07-21|1995-11-08|Hitachi, Ltd.|Aluminium-stabilized superconductor and superconducting coil, and method of manufacturing the superconductor|
    US5127149A|1990-02-26|1992-07-07|Advanced Superconductors, Inc.|Method of production for multifilament niobium-tin superconductors|
    JP2693255B2|1990-05-11|1997-12-24|日立電線株式会社|NbMethod and apparatus for manufacturing Al-based superconducting wire|
    US5182176A|1990-05-17|1993-01-26|Composite Materials Technology, Inc.|Extruded wires having layers of superconducting alloy and refractory meal encased in a normal metal sheath|
    US5139893A|1990-05-17|1992-08-18|Composite Materials Technology, Inc.|Superconducting alloy core circumscribed by multiple layers of NbTi and refractory metal barrier layer having a normal metal sheath|
    US5116429A|1990-05-17|1992-05-26|Composite Materials Technology, Inc.|Superconducting wire|
    US5364709A|1992-11-24|1994-11-15|Composite Materials Technology, Inc.|Insulation for superconductors|
    US6317303B1|1997-04-11|2001-11-13|Houston Advanced Research Center|High-speed superconducting persistent switch|
    KR20180027243A|2016-09-06|2018-03-14|한국전기연구원|Low Tc Superconductive Wire With Low Stabilzer Ratio And Superconductive Coil Comprising The Same|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    JP60241476A|JPH0795406B2|1985-10-30|1985-10-30|Compound composite superconducting conductor|
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