利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

22 条记录 (耗时 0.037 秒)

    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 forming BSCCO superconducting composite articles
    2.
    发明授权
    Method of forming BSCCO superconducting composite articles 失效
    形成BSCCO超导复合材料制品的方法

    公开(公告)号：US6069116A

    公开(公告)日：2000-05-30

    申请号：US927006

    申请日：1997-09-10

    申请人： Qi Li ,  Gilbert N. Riley, Jr. ,  Lawrence J. Masur ,  Eric R. Podtburg ,  Ronald D. Parrella ,  Martin W. Rupich ,  Donald R. Parker ,  William L. Carter ,  William J. Rosati ,  Mark D. Teplitsky

    发明人： Qi Li ,  Gilbert N. Riley, Jr. ,  Lawrence J. Masur ,  Eric R. Podtburg ,  Ronald D. Parrella ,  Martin W. Rupich ,  Donald R. Parker ,  William L. Carter ,  William J. Rosati ,  Mark D. Teplitsky

    IPC分类号： H01L39/24

    CPC分类号： H01L39/248 ,  Y10T29/49014

    摘要： A novel process of the production and processing of high quality, high T.sub.c BSCCO or (Bi,Pb)SCCO superconductors starts with fabrication of a forming a bundle including a plurality of billets, each billet containing at least one filament comprising a dominant amount of an tetragonal BSCCO phase with selected intermediate phases, and substantially surrounded by a constraining metal. The bundle is thermomechanically consolidated to form a multifilamentary precursor article by applying pressure and heat to the bundle under conditions cooperatively selected to cause interdiffusion of said constraining metal at the interfaces between said metal and said filaments and substantially complete elimination of voids in said bundle, and the consolidation step is completed before any high strain longitudinal deformation is performed on the bundle. The precursor article is then heated at a second selected processing temperature in an inert atmosphere with a second selected oxygen partial pressure for a second selected time period, the second processing temperature, the second time period and the second oxygen partial pressure being cooperatively selected to form a dominant amount of an orthorhombic BSCCO phase in the reacted mixture. It may then be deformed to form an elongated precursor article of a desired texture; and thereafter heated at a third selected processing temperature in an inert atmosphere with a third selected oxygen partial pressure for a third selected time period, all cooperatively selected to convert at least a portion of the orthorhombic BSCCO phase to the final superconducting BSCCO material.

    摘要翻译： 高品质，高Tc BSCCO或（Bi，Pb）SCCO超导体的生产和加工的新工艺首先制造形成包括多个坯料的束，每个坯料含有至少一根细丝，其包含显着量的 具有选定的中间相的四边形BSCCO相，并且基本上被约束金属包围。 通过热力学机械固结所述束以通过在协同选择的条件下对所述束施加压力和热量以在所述金属和所述长丝之间的界面处引起所述约束金属的相互扩散并且基本上完全消除所述束中的空隙而形成多丝前体制品，以及 在对束进行任何高应变纵向变形之前完成固结步骤。 然后将前体制品在具有第二选择的氧分压的惰性气氛中的第二选定处理温度下加热第二选定的时间段，第二处理温度，第二时间段和第二氧分压协同选择以形成 反应混合物中正交的BSCCO相的显着量。 然后可以将其变形以形成具有所需纹理的细长的前体制品; 然后在具有第三选择的氧分压的惰性气氛中在第三选定的处理温度下加热第三选定的时间段，全部协同选择以将至少一部分正交BSCCO相转化为最终超导BSCCO材料。

    Method of forming superconducting composite article
    3.
    发明授权
    Method of forming superconducting composite article 失效
    形成超导复合制品的方法

    公开(公告)号：US06613270B1

    公开(公告)日：2003-09-02

    申请号：US09583304

    申请日：2000-05-30

    申请人： Qi Li ,  Gilbert N. Riley, Jr. ,  Lawrence J. Masur ,  Eric R. Podtburg ,  Ronald D. Parella ,  Martin W. Rupich ,  Donald R. Parker ,  William L. Carter ,  William J. Rosati ,  Mark D. Teplitsky

    发明人： Qi Li ,  Gilbert N. Riley, Jr. ,  Lawrence J. Masur ,  Eric R. Podtburg ,  Ronald D. Parella ,  Martin W. Rupich ,  Donald R. Parker ,  William L. Carter ,  William J. Rosati ,  Mark D. Teplitsky

    IPC分类号： H01L3900

    CPC分类号： H01L39/248 ,  Y10T29/49014

    摘要： A novel process of the production and processing of high quality, high Tc BSCCO or (Bi,Pb)SCCO superconductors starts with fabrication of a forming a bundle including a plurality of billets, each billet containing at least one filament comprising a dominant amount of an tetragonal BSCCO phase with selected intermediate phases, and substantially surrounded by a constraining metal. The bundle is thermomechanically consolidated to form a multifilamentary precursor article by applying pressure and heat to the bundle under conditions cooperatively selected to cause interdiffusion of said constraining metal at the interfaces between said metal and said filaments and substantially complete elimination of voids in said bundle, and the consolidation step is completed before any high strain longitudinal deformation is performed on the bundle. The precursor article is then heated at a second selected processing temperature in an inert atmosphere with a second selected oxygen partial pressure for a second selected time period, the second processing temperature, the second time period and the second oxygen partial pressure being cooperatively selected to form a dominant amount of an orthorhombic BSCCO phase in the reacted mixture. It may then be deformed to form an elongated precursor article of a desired texture; and thereafter heated at a third selected processing temperature in an inert atmosphere with a third selected oxygen partial pressure for a third selected time period, all cooperatively selected to convert at least a portion of the orthorhombic BSCCO phase to the final superconducting BSCCO material.

    摘要翻译： 高品质，高Tc BSCCO或（Bi，Pb）SCCO超导体的生产和加工的新工艺首先制造形成包括多个坯料的束，每个坯料含有至少一根细丝，其包含显着量的 具有选定的中间相的四边形BSCCO相，并且基本上被约束金属包围。 通过热力学机械固结所述束以通过在协同选择的条件下对所述束施加压力和热量以在所述金属和所述长丝之间的界面处引起所述约束金属的相互扩散并且基本上完全消除所述束中的空隙而形成多丝前体制品，以及 在对束进行任何高应变纵向变形之前完成固结步骤。 然后将前体制品在具有第二选择的氧分压的惰性气氛中的第二选定处理温度下加热第二选定的时间段，第二处理温度，第二时间段和第二氧分压协同选择以形成 反应混合物中正交的BSCCO相的显着量。 然后可以将其变形以形成具有所需纹理的细长的前体制品; 然后在具有第三选择的氧分压的惰性气氛中在第三选定的处理温度下加热第三选定的时间段，全部协同选择以将至少一部分正交BSCCO相转化为最终超导BSCCO材料。

    Processing of (Bi,Pb)SCCO superconductor in wires and tapes
    6.
    发明授权
    Processing of (Bi,Pb)SCCO superconductor in wires and tapes 失效
    （Bi，Pb）SCCO超导体在电线和磁带中的处理

    公开(公告)号：US06311386B1

    公开(公告)日：2001-11-06

    申请号：US09358245

    申请日：1999-07-21

    申请人： Qi Li ,  Eric R. Podtburg ,  Patrick John Walsh ,  William L. Carter ,  Gilbert N. Riley, Jr. ,  Martin W. Rupich ,  Elliott Thompson ,  Alexander Otto

    发明人： Qi Li ,  Eric R. Podtburg ,  Patrick John Walsh ,  William L. Carter ,  Gilbert N. Riley, Jr. ,  Martin W. Rupich ,  Elliott Thompson ,  Alexander Otto

    IPC分类号： H01L3929

    CPC分类号： C04B35/4521 ,  C04B35/4525 ,  C04B35/65 ,  H01L39/2419 ,  H01L39/248 ,  Y10S505/739 ,  Y10S505/74 ,  Y10S505/742 ,  Y10T29/49014

    摘要： A novel process of the production and processing of high quality, high Tc (Bi,Pb)SCCO superconductors starts with fabrication of a precursor article including selected intermediate phases with desired chemical and structural properties. The precursor fabrication includes introducing the reacted mixture having a dominant amount of the tetragonal BSCCO phase into a metal sheath, and sealing the reacted mixture within said sheath, heating the mixture at a second selected processing temperature in an inert atmosphere with a second selected oxygen partial pressure for a second selected time period, the second processing temperature and the second oxygen partial pressure being cooperatively selected to form a dominant amount of an orthorhombic BSCCO phase in the reacted mixture. The sealed sheath is deformed to form an elongated precursor article of a desired texture; and thereafter heated at a third selected processing temperature in an inert atmosphere with a third selected oxygen partial pressure for a third selected time period. The third processing temperature and third oxygen partial pressure are cooperatively selected to convert at least a portion of the orthorhombic BSCCO phase to the final superconducting BSCCO material.

    摘要翻译： 高品质，高Tc（Bi，Pb）SCCO超导体的生产和加工的新工艺首先制造包含所需化学和结构性质的选定中间相的前体制品。 前体制备包括将具有显着量的四边形BSCCO相的反应混合物引入金属护套中，并将反应的混合物密封在所述护套内，在第二选择的加工温度下在惰性气氛中加热第二选择的氧部分 第二选择时间段的压力，第二加工温度和第二氧分压协同选择以形成反应混合物中正交BSCCO相的显着量。 密封的鞘被变形以形成具有所需纹理的细长的前体制品; 然后在具有第三选择的氧分压的惰性气氛中在第三选择的处理温度下加热第三选定时间段。 协调选择第三加工温度和第三氧分压以将正交BSCCO相的至少一部分转化为最终超导BSCCO材料。

    Method of making a multifilamentary super-conducting article
    9.
    发明授权
    Method of making a multifilamentary super-conducting article 失效
    制作多丝超导物品的方法

    公开(公告)号：US06370762B1

    公开(公告)日：2002-04-16

    申请号：US08651688

    申请日：1996-05-21

    申请人： Qi Li ,  Theodore S. Greene ,  Gilbert N. Riley, Jr. ,  William J. Michels ,  William L. Carter

    发明人： Qi Li ,  Theodore S. Greene ,  Gilbert N. Riley, Jr. ,  William J. Michels ,  William L. Carter

    IPC分类号： H01L3924

    CPC分类号： H01L39/248 ,  Y10T29/49014

    摘要： A reduced coefficient of friction, preferably created by ideal lubrication conditions, may advantageously be employed in the breakdown deformation of a precursor to a multifilamentary superconducting composite, particularly in combination with one or more high reduction breakdown drafts, to improve composite homogeneity and significantly increase the range of deformation conditions over which dimensional tolerances and Je may be optimized. Precursor composites made by this method exhibit reduced microhardness variability and fewer and less serious transverse filament defects than composites made by prior art methods. 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 predetermined pressure and a coefficient of friction less than about 0.2, preferably less than 0.01, and preferably less than about 0.001 during each roll working draft, and, then, sintering the rolled article to obtain the desired superconducting ceramic. The coefficient of friction is preferably obtained by interposing a lubricant between the precursor article and one or more rolls, most preferably under conditions which create ideal lubrication conditions.

    摘要翻译： 优选地，通过理想的润滑条件产生的减小的摩擦系数可以有利地用于前体与多丝超导复合材料的击穿变形，特别是与一种或多种高还原击穿气流组合，以提高复合材料均匀性并显着增加 尺寸公差和Je可以优化的变形条件范围。 通过该方法制备的前体复合材料显示出比现有技术方法制备的复合材料显微硬度变化性和越来越少的横向丝缺陷。 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，在每个轧制工作牵伸期间以预定压力和摩擦系数小于约0.2，优选小于0.01，优选小于约0.001的击穿阶段对前体制品进行辊加工，然后烧结轧制制品 以获得所需的超导陶瓷。 摩擦系数优选通过在前体制品和一个或多个辊之间插入润滑剂，最优选在产生理想的润滑条件的条件下来获得。