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    • 39. 发明公开
    • Procedure of densifying filaments for a superconductive wire
    • Verfahren zur Verdichtung von Filamentenfüreinen supraleitenden Draht
    • EP2172985A1
    • 2010-04-07
    • EP08017483.2
    • 2008-10-06
    • Bruker BioSpin AG
    • Flükiger René
    • H01L39/24
    • 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 ≥ 100MPa on a part of the intermediate element having an axial length L. This leads to a substantial increase of the critical current density J c , 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J c的显着增加,由此各向异性因子几乎不受影响,从而能够生产几乎各向同性的线或带。