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    • 7. 发明授权
    • Procedure of densifying filaments for a superconductive wire
    • 超导丝丝的致密化程序
    • US08372784B2
    • 2013-02-12
    • US12585914
    • 2009-09-29
    • René Flükiger
    • René Flükiger
    • H01L39/24H01B12/06
    • H01L39/24H01L39/2409H01L39/2412H01L39/2487Y10T29/49014
    • A method for producing a superconductive wire, whereby an elongated intermediate element is formed out of an initial element in a deformation step and whereby the superconductive filaments are formed by a final reaction heat treatment, is characterized in that prior to the final reaction heat treatment the filaments in the intermediate element are densified in one or more high pressure densification steps following up the deformation step, said densification steps comprising a simultaneous action of at least four hard surfaces perpendicular to the axis of the elongated intermediate element, building up high pressure P≧100 MPa on a part of the intermediate element having an axial length L. This leads to a substantial increase of the critical current density Jc, whereby the anisotropy factor Γ is be almost not affected thus enabling production of almost isotropic wires or tapes.
    • 一种制造超导线的方法,其中在变形步骤中由初始元件形成细长的中间元件,由此通过最终反应热处理形成超导细丝,其特征在于,在最终反应热处理之前 中间元件中的细丝在跟随变形步骤的一个或多个高压致密化步骤中致密化,所述致密化步骤包括垂直于细长中间元件的轴线的至少四个硬表面的同时作用,建立高压P≥ 在具有轴向长度L的中间元件的一部分上为100MPa。这导致临界电流密度Jc的显着增加,由此各向异性因子&Ggr; 几乎不受影响,从而能够生产几乎各向同性的线或带。
    • 10. 发明授权
    • Process for producing a superconducting wire having a Chevrel phases
    • 具有雪佛兰相的超导线材的制造方法
    • US4704249A
    • 1987-11-03
    • US797494
    • 1985-11-13
    • Wolfgang Glatzle
    • Wolfgang Glatzle
    • B21C37/04C01G1/00C01G39/00H01B12/04H01B13/00H01L39/12H01L39/24B22F7/04B22F3/24B32B15/02
    • H01L39/12H01L39/2412Y10T29/49014Y10T428/12083Y10T428/12097
    • The invention relates to a process for producing a superconducting wire, using, e.g., Chevrel phases as superconductors, in particular PbMo.sub.6 S.sub.8. Until now, it was not possible to produce superconducting wires from such materials in a technically usable quality. According to the process of the invention, the superconducting Chevrel phase is loaded vacuum-tight into a molybdenum shell and the unit is advantageously sealed in another jacket made of steel. The powdery superconducting phase has an average grain size of less than 1 .mu.m. For shaping the superconducting wire, the unit is extruded in a first process step at temperatures between 1000.degree. and 1600.degree. C. and reduced in cross section in excess of 1:10, and subsequently further treated in a plurality of process steps by additional extruding and/or hot drawing. Superconducting wires produced as specified above exhibit values for the critical quantities such as current bearing capacity, critical current density and limit values of the magnetic field that conform to those of the technically sophisticated superconductors of type II, or surpass the values of the latter type in individual instances. At the same time, it was possible to wind such wires to form coils without impairing the superconducting values due to the brittleness of the Chevrel phases.
    • 本发明涉及使用例如Chevrel相作为超导体,特别是PbMo 6 S 8来生产超导线的方法。 到目前为止,不可能以技术上可用的质量从这些材料制造超导线。 根据本发明的方法,将超导雪佛兰相真空密封在钼壳中,该单元有利地密封在由钢制成的另一夹套中。 粉状超导相的平均粒径小于1μm。 为了使超导线材成形,该单元在第一工艺步骤中在1000℃至1600℃之间的温度下挤出,并且横截面减小超过1:10,随后通过另外的挤出在多个工艺步骤中进一步处理 和/或热图。 如上所述生产的超导线材显示出临界量的值,例如当前承载能力,临界电流密度和符合II型技术上复杂的超导体的磁场的极限值,或超过后者的值 个别情况。 同时,由于Chevrel相的脆性,可以将这种电线缠绕形成线圈而不损害超导值。