Process for producing an elongated superconductor with a bismuth phase
having a high transition temperature and a superconductor produced
according to this process
    21.
    发明授权
    Process for producing an elongated superconductor with a bismuth phase having a high transition temperature and a superconductor produced according to this process 失效
    用于制备具有高转变温度的铋相的细长超导体和根据该方法制备的超导体的方法

    公开(公告)号:US6074991A

    公开(公告)日:2000-06-13

    申请号:US849896

    申请日:1997-06-19

    摘要: Process for producing an elongated superconductor with a bismuth phase having a high transition temperature and a superconductor produced according to this process. An elongated superconductor with at least one conductor core made of high-T.sub.c Bi-containing superconductor material with the 2212 or 2223 phase is to be manufactured. For this purpose, the cross section of a structure made of Ag matrix material and a precursor of the superconductor material is reduced. Subsequently the raw conductor thus obtained is annealed in an oxygen-containing atmosphere. According to this invention, a temperature variation between a higher temperature (T1) and a lower temperature (T2) is provided for the annealing. The higher temperature (T1) is at most 7 K above the decomposition temperature (Tz), and the lower temperature (T2) is at most 9 K below the decomposition temperature (Tz).

    摘要翻译: PCT No.PCT / DE95 / 01798 Sec。 371日期:1997年6月19日 102(e)日期1997年6月19日PCT 1995年12月15日PCT PCT。 公开号WO96 / 19417 日期1996年6月27日制备具有高转变温度的铋相的细长超导体和根据该方法制造的超导体的方法。 制造具有由具有2212或2223相的高Tc Bi超导体材料制成的至少一个导体芯的细长超导体。 为此,减少了由Ag基体材料构成的结构和超导体材料的前体的横截面。 随后将由此获得的原始导体在含氧气氛中退火。 根据本发明,为退火提供了较高温度(T1)和较低温度(T2)之间的温度变化。 较高的温度(T1)比分解温度(Tz)高至多7K,低温(T2)低于分解温度(Tz)9K以下。

    Tool for fine machining
    23.
    发明授权
    Tool for fine machining 失效
    精加工工具

    公开(公告)号:US5233738A

    公开(公告)日:1993-08-10

    申请号:US864616

    申请日:1992-04-07

    IPC分类号: B24B39/02

    CPC分类号: B24B39/02 Y10T29/47

    摘要: A tool for machining of openings, shafts and the like has a body having concentrical stepped cylindrical working regions, grooves provided between the working regions, and transitional regions arranged between the grooves and the cylindrical working regions. The transitional regions extend substantially tangentially in a machining direction and a deformation process of an outer surface of the workpiece to be machined is performed without material removal by compression.

    摘要翻译: 用于加工开口,轴等的工具具有主体,其具有同心圆台阶的圆柱形工作区域,设置在工作区域之间的槽和布置在槽和圆柱形工作区域之间的过渡区域。 过渡区域在加工方向上基本上切向延伸,并且在不进行压缩的材料去除的情况下执行待加工的工件的外表面的变形过程。

    Composite superconducting conductor with several conductor strands and a
method for manufacturing the same
    24.
    发明授权
    Composite superconducting conductor with several conductor strands and a method for manufacturing the same 失效
    具有多个导线的复合超导导体及其制造方法

    公开(公告)号:US4757161A

    公开(公告)日:1988-07-12

    申请号:US924982

    申请日:1986-10-28

    摘要: A composite superconductor comprises a matrix of an alloy which is normally conductive at operating temperatures with the alloy being copper and another alloying element. Several superconducting filaments are embedded in the matrix with these filaments being formed by a diffusion reaction between at least two elements. An aluminum jacket surrounds the matrix. A barrier layer formed from at least one intermetallic copper-aluminum compound is disposed between the aluminum jacket and the alloy matrix. The aluminum jacket may be formed by extrusion at an elevated temperature with the boundary layer between the aluminum jacket and the alloy matrix being concurrently formed by diffusion.

    摘要翻译: 复合超导体包括合金的基体,该合金在工作温度下通常为导电性,该合金为铜和另一种合金元素。 几根超导细丝嵌入基质中,这些长丝通过至少两种元素之间的扩散反应形成。 铝合金外壳围绕着矩阵。 由铝外壳和合金基体之间设置由至少一种金属间铜 - 铝化合物形成的阻挡层。 铝套可以通过在高温下挤出而形成,铝套和合金基体之间的边界层同时由扩散形成。

    Method for the manufacture of a superconductor
    25.
    发明授权
    Method for the manufacture of a superconductor 失效
    制造超导体的方法

    公开(公告)号:US4037313A

    公开(公告)日:1977-07-26

    申请号:US665820

    申请日:1976-03-11

    申请人: Manfred Wilhelm

    发明人: Manfred Wilhelm

    IPC分类号: H01L39/24 H01V11/00

    摘要: The invention concerns a method for the manufacture of a superconductor which comprises a superconductive, intermetallic compound including at least two elements. A ductile component of at least one element of the compound is brought into contact with a ductile carrier metal bearing the other elements of the compound. The structure so obtained is heat-treated in a vapor formed over a separate melt of the elements found in the carrier metal in such a manner that the intermetallic compound is formed through reaction of the vapor, diffusing through the carrier metal, with the ductile component. The heat treatment applied until the ductile components and the other elements reach the same temperature is performed in a vacuum with a residual maximum gas pressure of 10.sup.-.sup.2 Torr or in an inert gas at a maximum gas pressure of 500 Torr.

    摘要翻译: 本发明涉及制造超导体的方法,该超导体包括包含至少两个元素的超导金属间化合物。 化合物的至少一种元素的延性组分与承载化合物的其它元素的延性载体金属接触。 将如此得到的结构在形成在载体金属中发现的元素的单独熔体上的蒸汽中进行热处理,使得金属间化合物通过蒸气的反应形成,通过载体金属扩散,延展成分 。 施加到延性部件和其它元件达到相同温度的热处理在残余最大气体压力为10乇的真空中或在最大气体压力为500乇的惰性气体中进行。