Method of forming BSCCO superconducting composite articles
    21.
    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

    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
    22.
    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

    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。

    Production and processing of (Bi,Pb) SCCO superconductors
    23.
    发明授权
    Production and processing of (Bi,Pb) SCCO superconductors 失效
    (Bi,Pb)SCCO超导体的生产和加工

    公开(公告)号:US06295716B1

    公开(公告)日:2001-10-02

    申请号:US08331184

    申请日:1994-10-28

    IPC分类号: H01L3924

    摘要: A multicomponent powder useful in the formation of BSCCO-2223 is provided comprised of orthorhombic BSCCO-2212 and alkaline earth cuprate, without formation of undesirable secondary phases such as alkaline earth bismuthates and alkaline earth plumbates. A method for the production of the multicomponent powder includes providing a mixture of raw materials comprising constituent metallic elements in a ratio corresponding to a superconducting BSCCO-2223 material and heating the mixture under conditions which form a dominant amount of the orthorhombic BSCCO phase and the alkaline earth cuprate phase while preventing formation of an undesirable secondary phase selected from the group of alkaline earth plumbates and alkaline earth bismuthates. A subsequent heating step converts the multicomponent powder into the BSCCO-2223 and subsequent deformation and annealing processes may be used to form a substantially single phase, highly textured (Bi,Pb)SCCO-2223 superconductor article.

    摘要翻译: 提供了可用于形成BSCCO-2223的多组分粉末,由正交BSCCO-2212和碱土铜酸盐组成,而不形成不需要的第二相,例如碱土金属铋酸盐和碱土金属铅酸铅。 制备多组分粉末的方法包括提供包含构成金属元素的原料的混合物,其比例对应于超导BSCCO-2223材料,并在形成正交BSCCO相的主要量和碱性的条件下加热该混合物 同时防止形成选自碱土金属铅和碱土金属铋酸盐的不期望的二次相。 随后的加热步骤将多组分粉末转化成BSCCO-2223,随后的变形和退火工艺可用于形成基本上单相,高度纹理(Bi,Pb)SCCO-2223超导体制品。

    Systems and methods for solution-based deposition of metallic cap layers for high temperature superconductor wires
    26.
    发明申请
    Systems and methods for solution-based deposition of metallic cap layers for high temperature superconductor wires 有权
    用于高温超导线的金属盖层的基于溶液沉积的系统和方法

    公开(公告)号:US20090233800A1

    公开(公告)日:2009-09-17

    申请号:US11728108

    申请日:2007-03-23

    IPC分类号: H01L39/02 H01L39/24

    摘要: Under one aspect, a method of making a superconductor wire includes providing an oxide superconductor layer overlaying a substrate; forming a substantially continuous barrier layer over the oxide superconductor layer, the barrier layer including metal; depositing a layer of metal particles over the barrier layer, said depositing including applying a liquid including metal particles over the barrier layer; and sintering the layer of metal particles to form a substantially continuous metal layer over the barrier layer. In one or more embodiments, the oxide superconductor layer is oxygen-deficient, and the method may include oxidizing the oxygen-deficient oxide superconductor layer. At least a portion of the sintering and the oxidizing may occur simultaneously, for example by performing them at an oxygen partial pressure and a temperature sufficient to both sinter the metal particles and to oxidize the oxygen-deficient oxide superconductor layer.

    摘要翻译: 在一个方面,制造超导线的方法包括提供覆盖衬底的氧化物超导体层; 在所述氧化物超导体层上形成基本上连续的阻挡层,所述阻挡层包括金属; 在阻挡层上沉积一层金属颗粒,所述沉积包括将包含金属颗粒的液体施加在阻挡层上; 并且在所述阻挡层上形成金属颗粒层以形成基本连续的金属层。 在一个或多个实施例中,氧化物超导体层是缺氧的,并且该方法可以包括氧化缺氧氧化物超导体层。 烧结和氧化的至少一部分可以同时发生,例如通过在氧分压和足以烧结金属颗粒并氧化缺氧氧化物超导体层的温度下进行。

    Systems and methods for solution-based deposition of metallic cap layers for high temperature superconductor wires
    27.
    发明授权
    Systems and methods for solution-based deposition of metallic cap layers for high temperature superconductor wires 有权
    用于高温超导线的金属盖层的基于溶液沉积的系统和方法

    公开(公告)号:US07893006B2

    公开(公告)日:2011-02-22

    申请号:US11728108

    申请日:2007-03-23

    IPC分类号: H01L39/24 H01B12/00

    摘要: Under one aspect, a method of making a superconductor wire includes providing an oxide superconductor layer overlaying a substrate; forming a substantially continuous barrier layer over the oxide superconductor layer, the barrier layer including metal; depositing a layer of metal particles over the barrier layer, said depositing including applying a liquid including metal particles over the barrier layer; and sintering the layer of metal particles to form a substantially continuous metal layer over the barrier layer. In one or more embodiments, the oxide superconductor layer is oxygen-deficient, and the method may include oxidizing the oxygen-deficient oxide superconductor layer. At least a portion of the sintering and the oxidizing may occur simultaneously, for example by performing them at an oxygen partial pressure and a temperature sufficient to both sinter the metal particles and to oxidize the oxygen-deficient oxide superconductor layer.

    摘要翻译: 在一个方面,制造超导线的方法包括提供覆盖衬底的氧化物超导体层; 在所述氧化物超导体层上形成基本上连续的阻挡层,所述阻挡层包括金属; 在阻挡层上沉积一层金属颗粒,所述沉积包括将包含金属颗粒的液体施加在阻挡层上; 并且在所述阻挡层上形成金属颗粒层以形成基本连续的金属层。 在一个或多个实施例中,氧化物超导体层是缺氧的,并且该方法可以包括氧化缺氧氧化物超导体层。 烧结和氧化的至少一部分可以同时发生,例如通过在氧分压和足以烧结金属颗粒并氧化缺氧氧化物超导体层的温度下进行。

    THICK OXIDE FILM BY SINGLE COATING
    28.
    发明申请
    THICK OXIDE FILM BY SINGLE COATING 有权
    单氧化硅薄膜

    公开(公告)号:US20110245083A1

    公开(公告)日:2011-10-06

    申请号:US12751064

    申请日:2010-03-31

    摘要: An article including a substrate and a layer of a homogeneous metal-oxyfluoride intermediate film disposed on the substrate, the intermediate film containing a rare earth metal, an alkaline earth metal, and a transition metal. The intermediate film has a defect density less than 20 percent and, upon thermal treatment, is capable of converting to a homogeneous rare earth metal-alkaline earth metal-transition metal-oxide superconductor film with a stoichiometric thickness greater than 1 μm and up to 5 μm. Also disclosed is another article including a substrate and the homogeneous superconductor film with a stoichiometric thickness greater than 1 μm and up to 5 μm. Further, methods of making these two articles are described.

    摘要翻译: 一种制品,其包括基材和设置在基材上的均匀金属 - 氟氧化物中间膜的层,所述中间膜含有稀土金属,碱土金属和过渡金属。 中间膜具有小于20%的缺陷密度,并且在热处理后,能够转化成化学计量厚度大于1μm且高达5的均匀的稀土金属 - 碱土金属 - 过渡金属 - 氧化物超导体膜 μm。 还公开了另一种制品,其包括基材和化学计量厚度大于1μm且高达5μm的均相超导体膜。 此外,描述制造这两个制品的方法。