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    Tensioning process for manufacture of superconducting ceramic composite conductors
    1.
    发明授权
    Tensioning process for manufacture of superconducting ceramic composite conductors 失效
    用于制造超导陶瓷复合导体的张紧工艺

    公开(公告)号：US06205645B1

    公开(公告)日：2001-03-27

    申请号：US08652624

    申请日：1996-05-21

    申请人： Qi Li ,  Craig J. Christopherson ,  Gilbert N. Riley, Jr. ,  William L. Carter ,  William J. Michels ,  Eric R. Podtburg ,  Lawrence J. Masur

    发明人： Qi Li ,  Craig J. Christopherson ,  Gilbert N. Riley, Jr. ,  William L. Carter ,  William J. Michels ,  Eric R. Podtburg ,  Lawrence J. Masur

    IPC分类号： H01L3924

    CPC分类号： H01L39/248 ,  Y10T29/49014

    摘要： The combination of one or more high reduction drafts with controlled, low back tensions increases the range of deformation conditions over which dimensional tolerances and Je may be optimized. The method comprises the steps of: first, providing a precursor article comprising a metal matrix surrounding a plurality of filaments extending along the length of the article and comprising precursors to a desired superconducting ceramic; next, roll working the precursor article during a breakdown stage at a back tension less than the elastic to plastic transition threshold of the composite during at least one high reduction roll working draft, and, then, sintering the rolled article to obtain the desired superconducting ceramic. In a preferred embodiment, the rolling step further comprises rolling the article at a front tension less than the elastic to plastic transition threshold of the rolled, unsintered article.

    摘要翻译： 一个或多个高减速牵引力与受控的低回力张力的组合增加了尺寸公差和Je可能被优化的变形条件的范围。 该方法包括以下步骤：首先，提供包含金属基体的前体制品，所述金属基质围绕沿着所述制品的长度延伸的多根长丝，并且包括所需超导陶瓷的前体; 接下来，在至少一个高还原辊工作牵伸期间，以小于复合材料的弹性 - 塑性转变阈值的后拉力在击穿阶段期间辊加工前体制品，然后烧结轧制制品以获得所需的超导陶瓷 。 在优选实施例中，轧制步骤还包括以低于轧制未烧结制品的弹性 - 塑性转变阈值的前拉力滚动制品。

    Method of texturing a superconductive oxide precursor
    3.
    发明授权
    Method of texturing a superconductive oxide precursor 失效
    纹理化超导氧化物前体的方法

    公开(公告)号：US6001777A

    公开(公告)日：1999-12-14

    申请号：US902588

    申请日：1997-07-29

    申请人： Kenneth L. DeMoranville ,  Qi Li ,  Peter D. Antaya ,  Craig J. Christopherson ,  Gilbert N. Riley, Jr. ,  Jeffrey M. Seuntjens

    发明人： Kenneth L. DeMoranville ,  Qi Li ,  Peter D. Antaya ,  Craig J. Christopherson ,  Gilbert N. Riley, Jr. ,  Jeffrey M. Seuntjens

    IPC分类号： H01L39/24 ,  H01L39/00

    CPC分类号： H01L39/248

    摘要： A method of forming a textured superconductor wire includes constraining an elongated superconductor precursor between two constraining elongated members placed in contact therewith on opposite sides of the superconductor precursor, and passing the superconductor precursor with the two constraining members through flat rolls to form the textured superconductor wire. The method includes selecting desired cross-sectional shape and size constraining members to control the width of the formed superconductor wire. A textured superconductor wire formed by the method of the invention has regular-shaped, curved sides and is free of flashing. A rolling assembly for single-pass rolling of the elongated precursor superconductor includes two rolls, two constraining members, and a fixture for feeding the precursor superconductor and the constraining members between the rolls. In alternate embodiments of the invention, the rolls can have machined regions which will contact only the elongated constraining members and affect the lateral deformation and movement of those members during the rolling process.

    摘要翻译： 形成纹理超导体线的方法包括在超导体前体的相对侧上将与超导体前体相对设置的两个约束细长构件之间的细长超导体前体约束，并且使超导体前体与两个约束构件通过平辊以形成织构化的超导体线 。 该方法包括选择期望的横截面形状和尺寸约束构件以控制形成的超导体线的宽度。 通过本发明的方法形成的纹理超导体线具有规则形状的弯曲侧面并且不闪烁。 用于细长前驱体超导体的单次轧制的滚动组件包括两个辊，两个约束构件和用于在辊之间供给前体超导体和约束构件的固定装置。 在本发明的替代实施例中，辊可以具有仅与细长的约束构件接触并且在轧制过程中影响这些构件的横向变形和移动的加工区域。

    Structure and method of manufacture for minimizing filament coupling losses in superconducting oxide composite articles
    5.
    发明授权
    Structure and method of manufacture for minimizing filament coupling losses in superconducting oxide composite articles 失效

    公开(公告)号：US06393690B1

    公开(公告)日：2002-05-28

    申请号：US09358167

    申请日：1999-07-20

    申请人： Gregory L. Snitchler ,  Gilbert N. Riley, Jr. ,  Alexis P. Malozemoff ,  Craig J. Christopherson

    发明人： Gregory L. Snitchler ,  Gilbert N. Riley, Jr. ,  Alexis P. Malozemoff ,  Craig J. Christopherson

    IPC分类号： H01L3924

    CPC分类号： H01L39/248 ,  H01L39/143 ,  Y10S428/93 ,  Y10S505/704 ,  Y10T29/49014 ,  Y10T428/24942 ,  Y10T428/294

    摘要： The invention provides a multifilamentary superconducting composite article comprising multiple substantially electrically decoupled domains, each including one or more fine, preferably twisted filaments of a desired superconducting oxide material. In a preferred embodiment, the article comprises a matrix, which substantially comprises a noble metal, a conductive jacketing layer surrounding the matrix, a plurality of discrete filament decoupling layers, each comprising an insulating material, disposed within the matrix to separate the matrix into a plurality of substantially electrically decoupled domains; a plurality of filaments, each comprising a desired superconducting oxide, which are disposed within and essentially encapsulated by the matrix and chemically isolated thereby from the decoupling layers, each of the electrically decoupled domains containing at least one filament. It provides multifilamentary articles that exhibit high DC performance characteristics and AC performance markedly superior to any currently available for these materials. A process and intermediate for making the article are also provided. The article may be manufactured by first, forming a composite intermediate comprising multiple domains, each including one or more fine, preferably twisted filaments of a superconducting oxide or its precursors and then thermomechanically processing the intermediate at conditions sufficient to produce at least one of the effects of texturing, crack healing and, if a precursor to the desired superconducting oxide remains, phase transformation in the filament material under conditions which support the electrical separation of the domains. Preferably, the forming step includes the step of providing filament decoupling layers comprising insulating materials or their predecessors to provide the desired domain separation and most preferably, the insulating material is formed in situ from its predecessor during the thermomechanical processing step. Oxide-forming predecessors are preferred, especially oxide forming materials selected from the group consisting of the transition metals, the alkaline earths, titanium, zirconium, niobium, molybdenum, aluminum, and their alloys. In a preferred embodiment, the desired superconducting oxide material is a member of the bismuth or yttrium families of oxide superconductors.

    Structure and method of manufacture for minimizing filament coupling losses in superconducting oxide composite articles
    6.
    发明授权
    Structure and method of manufacture for minimizing filament coupling losses in superconducting oxide composite articles 失效

    公开(公告)号：US06038462A

    公开(公告)日：2000-03-14

    申请号：US862016

    申请日：1997-05-22

    申请人： Gregory L. Snitchler ,  Gilbert N. Riley, Jr. ,  Alexis P. Malozemoff ,  Craig J. Christopherson

    发明人： Gregory L. Snitchler ,  Gilbert N. Riley, Jr. ,  Alexis P. Malozemoff ,  Craig J. Christopherson

    IPC分类号： H01B12/10 ,  H01B13/00 ,  H01L39/14 ,  H01L39/24

    CPC分类号： H01L39/248 ,  H01L39/143 ,  Y10S428/93 ,  Y10S505/704 ,  Y10T29/49014 ,  Y10T428/24942 ,  Y10T428/294

    摘要： A multifilamentary superconducting composite article comprising multiple substantially electrically decoupled domains, each including one or more fine, preferably twisted filaments of a desired superconducting oxide material. In a preferred embodiment, the article comprises a matrix, which substantially comprises a noble metal, a conductive jacketing layer surrounding the matrix, a plurality of discrete filament decoupling layers, each comprising an insulating material, disposed within the matrix to separate the matrix into a plurality of substantially electrically decoupled domains; a plurality of filaments, each comprising a desired superconducting oxide, which are disposed within and essentially encapsulated by the matrix and chemically isolated thereby from the decoupling layers, each of the electrically decoupled domains containing at least one filament. It provides multifilamentary articles that exhibit high DC performance characteristics and AC performance markedly superior to any currently available for these materials. The article may be manufactured by first, forming a composite intermediate comprising multiple domains, each including one or more fine, preferably twisted filaments of a superconducting oxide or its precursors and then thermomechanically processing the intermediate at conditions sufficient to produce at least one of the effects of texturing, crack healing and, if a precursor to the desired superconducting oxide remains, phase transformation in the filament material under conditions which support the electrical separation of the domains. Preferably, the forming step includes the step of providing filament decoupling layers comprising insulating materials or their predecessors to provide the desired domain separation and most preferably, the insulating material is formed in situ from its predecessor during the thermomechanical processing step. Oxide-forming predecessors are preferred, especially oxide forming materials selected from the group consisting of the transition metals, the alkaline earths, titanium, zirconium, niobium, molybdenum, aluminum, and their alloys. In a preferred embodiment, the desired superconducting oxide material is a member of the bismuth or yttrium families of oxide superconductors.

    Low-aspect ratio superconductor wire
    8.
    发明授权
    Low-aspect ratio superconductor wire 失效
    低纵横比超导线

    公开(公告)号：US06271475B1

    公开(公告)日：2001-08-07

    申请号：US09274184

    申请日：1999-03-23

    申请人： Alexander Otto ,  Craig J. Christopherson

    发明人： Alexander Otto ,  Craig J. Christopherson

    IPC分类号： H01B1210

    CPC分类号： H01L39/248 ,  Y10S505/887 ,  Y10S505/928 ,  Y10T29/49014

    摘要： A low-aspect ratio multi-filament superconductor wire includes a plurality of oxide superconductor filaments arranged in an elongated wire structure. Each filament of the wire also has a low-aspect ratio. The filaments are textured such that a crystallographic c direction of each filament is aligned with a crystallographic c direction of all other filaments with the crystallographic c directions being perpendicular to the longitudinal axis of the wire structure. The invention also features a groove rolling machine for forming a low-aspect ratio multi-filament superconductor wire by texturing a precursor tape by deforming the tape to a low-aspect ratio wire by reducing a larger dimension of the tape in such a way as to prevent buckling of the tape. A superconducting cable can be formed by planetary winding a plurality of multi-filament superconductor wires.

    摘要翻译： 低纵横比的复丝超导线包括以细长的线结构布置的多个氧化物超导体细丝。 电线的每根细丝也具有低纵横比。 长丝被纹理化，使得每个细丝的晶体c方向与所有其它细丝的晶体c方向对准，其晶体学方向垂直于线结构的纵向轴线。 本发明还特征在于一种用于形成低纵横比的复丝超导体线的槽轧机，其通过使带材尺寸变小而使带材变形为低纵横比的线材，通过使带材尺寸变小而形成前置带， 防止胶带翘曲。 可以通过行星式缠绕多根超细丝线来形成超导电缆。

    Superconducting composite with high sheath resistivity
    9.
    发明授权
    Superconducting composite with high sheath resistivity 失效
    具有高电导率的超导复合材料

    公开(公告)号：US06188921B1

    公开(公告)日：2001-02-13

    申请号：US09240998

    申请日：1999-02-01

    申请人： Alexander Otto ,  Ralph P. Mason ,  Craig J. Christopherson ,  Peter R. Roberts

    发明人： Alexander Otto ,  Ralph P. Mason ,  Craig J. Christopherson ,  Peter R. Roberts

    IPC分类号： H01B1200

    CPC分类号： H01L39/248 ,  Y10S505/704

    摘要： A superconducting article having a high bulk sheath resistivity, and methods of manufacture of such an article. High-temperature superconductor filaments are disposed in a ductile matrix comprising a high silver content. The matrix is then coated with a solute and heated to a temperature high enough to allow the solute to diffuse into the matrix, but not high enough to allow substantive degradation or poisoning of the superconductor. After diffusion and cooling, the matrix comprises a silver alloy having a higher bulk resistivity than the pure silver.

    摘要翻译： 具有高体积护套电阻率的超导制品以及这种制品的制造方法。 高温超导体细丝设置在包含高银含量的延性基体中。 然后将基质用溶质包被并加热到足够高的温度以使溶质扩散到基质中，但不高到足以允许超导体的实质性降解或中毒。 在扩散和冷却之后，基体包括具有比纯银更高的体电阻率的银合金。

    Decoupling of superconducting elements in high temperature superconducting composites
    10.
    发明授权
    Decoupling of superconducting elements in high temperature superconducting composites 失效
    超导元件在高温超导复合材料中的去耦

    公开(公告)号：US06397454B1

    公开(公告)日：2002-06-04

    申请号：US08719987

    申请日：1996-09-25

    申请人： Jeffrey M. Seuntjens ,  Craig J. Christopherson ,  Gregory L. Snitchler ,  William L. Barnes ,  Kenneth DeMoranville

    发明人： Jeffrey M. Seuntjens ,  Craig J. Christopherson ,  Gregory L. Snitchler ,  William L. Barnes ,  Kenneth DeMoranville

    IPC分类号： H01L3924

    CPC分类号： H01L39/248 ,  H01L39/143 ,  Y10T29/49014

    摘要： An oxide superconducting cable is provided having a plurality of strands comprised of at least one oxide superconductor filament sheathed in a ductile and conductive metal matrix and least one of said strand further comprising a substantially continuous high resistivity coating substantially surrounding said at least one strand. The strands are positioned and arranged to form a cable. The cable is prepared by (a) applying a ductile predecessor coating to a plurality of strands, each said strand comprised of at least one oxide superconductor filament or a precursor thereto sheathed in a ductile metal matrix, and the ductile predecessor capable of conversion into a high resistivity material; (b) assembling the plurality of strands into a cable; and (c ) converting the ductile predecessor into a high resistivity material, where steps (a) and (b) can be performed in any order.

    摘要翻译： 提供氧化物超导电缆，其具有由至少一个氧化物超导体丝束组成的多个线束，所述氧化物超导体细丝被套在延性和导电金属基体中，并且所述线中的至少一个还包括基本上连续的高电阻率涂层，其基本上围绕所述至少一条线。 股线被定位和布置成形成电缆。 电缆通过以下步骤制备：（a）将韧性前体涂层施加到多根股线上，每根股线由至少一个氧化物超导体细丝或其延展性延伸金属基质中的前体组成，并且该延性前身能够转化为 高电阻率材料; （b）将所述多根股线组装成电缆; 和（c）将延性前体转变成高电阻率材料，其中步骤（a）和（b）可以以任何顺序进行。