Superconducing wind-and-react-coils and methods of manufacture
    31.
    发明授权
    Superconducing wind-and-react-coils and methods of manufacture 失效
    超强制风和反应线圈和制造方法

    公开(公告)号:US06603379B1

    公开(公告)日:2003-08-05

    申请号:US09578434

    申请日:2000-05-25

    IPC分类号: H01F600

    摘要: A process for manufacturing superconducting magnetic coils from strain-tolerant, superconducting multi-filament composite conductors is described. The method involves winding the precursor to a multi-filament composite conductor and an insulating material or its precursor around a mandrel in order to form a coil, and then exposing the coil to high temperatures and an oxidizing environment. The insulating material or its precursor is chosen to permit exposure of the superconductor precursor filaments to the oxidizing environment, and to encase the matrix-forming material enclosing the filaments, which is reversibly weakened during processing.

    摘要翻译: 描述了从耐应变的超导复丝导体制造超导磁线圈的工艺。 该方法包括将前体缠绕到多芯复合导体和围绕心轴的绝缘材料或其前体以形成线圈,然后将线圈暴露于高温和氧化环境。 绝缘材料或其前体被选择为允许超导体前体细丝暴露于氧化环境,并且包围围绕长丝的基质形成材料,其在加工过程中可逆地减弱。

    Performance of oxide dispersion strengthened superconductor composites
    32.
    发明授权
    Performance of oxide dispersion strengthened superconductor composites 失效
    氧化物分散强化超导体复合材料的性能

    公开(公告)号:US06436875B2

    公开(公告)日:2002-08-20

    申请号:US09815063

    申请日:2001-03-22

    IPC分类号: C04B3564

    摘要: The invention features high performing composite superconducting oxide articles that can be produced from OPIT precursors substantially without poisoning the superconductor. In general, the superconducting oxide is substantially surrounded by a matrix material. The matrix material contains a first constraining material including a noble metal and a second metal. The second metal is a relatively reducing metal which lowers the overall oxygen activity of the matrix material and the article at a precursor process point prior to oxidation of the second metal. The second metal is substantially converted to a metal oxide dispersed in the matrix during or prior to a first phase conversion heat treatment but after formation of the composite, creating an ODS matrix.

    摘要翻译: 本发明的特征在于高性能复合超导氧化物制品,其可以从OPIT前体生产,而不会使超导体中毒。 通常,超导氧化物基本上被基质材料包围。 基质材料含有包含贵金属和第二金属的第一约束材料。 第二种金属是相对还原的金属,其降低了在第二金属氧化之前的前体工艺点处的基质材料和制品的整体氧活性。 在第一相转化热处理期间或之前,第二金属基本上转化为分散在基质中的金属氧化物,但是在形成复合材料之后,形成ODS基体。

    Process of annealing BSCCO-2223 superconductors
    33.
    发明授权
    Process of annealing BSCCO-2223 superconductors 失效
    BSCCO-2223超导体退火工艺

    公开(公告)号:US5661114A

    公开(公告)日:1997-08-26

    申请号:US198912

    申请日:1994-02-17

    摘要: A method for preparing a BSCCO-2223 oxide superconducting article includes annealing an oxide superconductor article comprised of BSCCO-2223 oxide superconductor at a temperature selected from the range of about 500.degree. C..ltoreq.T.ltoreq.787.degree. C. and an annealing atmosphere having an oxygen pressure selected from within the region having a lower bound defined by the equation, P.sub.O2 (lower).gtoreq.3.5.times.10.sup.10 exp(-32,000/T+273) and an upper bound defined by the equation, P.sub.O2 (upper).ltoreq.1.1.times.10.sup.12 exp(-32,000/T+273). The article is annealed for a time sufficient to provide at least a 10% increase in critical current density as compared to the critical current density of the pre-anneal oxide superconductor article. An oxide superconductor having the formula Bi.sub.2-y Pb.sub.y Sr.sub.2 Ca.sub.2 Cu.sub.3 O.sub.10+x, where 0.ltoreq.x.ltoreq.1.5 and where 0.ltoreq.y.ltoreq.0.6 is obtained, the oxide superconductor characterized by a critical transition temperature of greater than 111.0K, as determined by four point probe method.

    摘要翻译: 制备BSCCO-2223氧化物超导制品的方法包括在选自约500℃的温度范围内退火由BSCCO-2223氧化物超导体组成的氧化物超导体制品。 退火气氛,其具有从具有下式定义的区域内的氧气压力选择:PO2(下)> / = 3.5×1010exp(-32,000 / T + 273),由上式定义的上限PO2(上)