公开(公告)号：US20130345063A1

公开(公告)日：2013-12-26

申请号：US13398865

申请日：2012-02-17

申请人： René Flükiger ,  Florin Buta ,  Carmine Senatore

发明人： René Flükiger ,  Florin Buta ,  Carmine Senatore

IPC分类号： H01L39/24

CPC分类号： H01L39/2487 ,  B30B7/04 ,  H01L39/24 ,  H01L39/2409 ,  H01L39/2412 ,  Y10T29/49014

摘要： A device for the high pressure densification of superconducting wire from compacted superconductor material or superconductor precursor powder particles, has four hard metal anvils (5, 6, 7, 8) with a total length (L2) parallel to the superconducting wire, the hard metal anvils borne in external independent pressure blocks (9, 10, 11), which are in turn either fixed or connected to high pressure devices, preferably hydraulic presses. At least one of the hard metal anvils is a free moving anvil (6) having clearances of at least 0.01 mm up to 0.2 mm towards the neighboring hard metal anvils (5, 8), so that no wall friction occurs between the free moving anvil and the neighboring anvils. This allows for high critical current densities Jc at reduced pressure applied to the hard metal anvils.

公开(公告)号：US08372784B2

公开(公告)日：2013-02-12

申请号：US12585914

申请日：2009-09-29

申请人： René Flükiger

发明人： René Flükiger

IPC分类号： H01L39/24 ,  H01B12/06

CPC分类号： H01L39/24 ,  H01L39/2409 ,  H01L39/2412 ,  H01L39/2487 ,  Y10T29/49014

摘要： 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.

摘要翻译： 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。

公开(公告)号：US09012366B2

公开(公告)日：2015-04-21

申请号：US13398865

申请日：2012-02-17

申请人： René Flükiger ,  Florin Buta ,  Carmine Senatore

发明人： René Flükiger ,  Florin Buta ,  Carmine Senatore

IPC分类号： H01L39/24 ,  H01B13/00 ,  B30B7/04

CPC分类号： H01L39/2487 ,  B30B7/04 ,  H01L39/24 ,  H01L39/2409 ,  H01L39/2412 ,  Y10T29/49014

摘要： A device for the high pressure densification of superconducting wire from compacted superconductor material or superconductor precursor powder particles, has four hard metal anvils (5, 6, 7, 8) with a total length (L2) parallel to the superconducting wire, the hard metal anvils borne in external independent pressure blocks (9, 10, 11), which are in turn either fixed or connected to high pressure devices, preferably hydraulic presses. At least one of the hard metal anvils is a free moving anvil (6) having clearances of at least 0.01 mm up to 0.2 mm towards the neighboring hard metal anvils (5, 8), so that no wall friction occurs between the free moving anvil and the neighboring anvils. This allows for high critical current densities Jc at reduced pressure applied to the hard metal anvils.

摘要翻译： 用于从压实的超导体材料或超导体前体粉末颗粒的超导线的高压致密化的装置具有四个硬金属砧座（5,6,7,8），其总长度（L2）与超导线平行，硬质金属 砧座承载在外部独立的压力块（9,10,11）中，它们又固定或连接到高压装置，优选液压机。 硬质金属砧座中的至少一个是自由移动的砧座（6），其相对于相邻的硬质金属砧座（5,8）具有至少0.01mm至0.2mm的间隙，使得在自由移动砧座之间不发生壁摩擦 和邻近的砧座。 这允许在施加到硬金属砧座上的减压下的高临界电流密度Jc。

公开(公告)号：US07505800B2

公开(公告)日：2009-03-17

申请号：US11279282

申请日：2006-04-11

申请人： René Flükiger ,  Vital Abächerli ,  Davide Uglietti ,  Daniel Eckert

发明人： René Flükiger ,  Vital Abächerli ,  Davide Uglietti ,  Daniel Eckert

IPC分类号： H01B12/06

CPC分类号： H01L39/14 ,  H01L39/2409 ,  Y10S505/806 ,  Y10S505/821 ,  Y10S505/917 ,  Y10S505/919 ,  Y10S505/92 ,  Y10T29/49014

摘要： A superconductive element containing Nb3Sn, in particular a multifilament wire, comprising at least one superconductive filament (8) which is obtained by a solid state diffusion reaction from a preliminary filament structure (1), said preliminary filament structure (1) containing an elongated hollow pipe (2) having an inner surface (3) and an outer surface (4), wherein said hollow pipe (2) consists of Nb or an Nb alloy, in particular NbTa, wherein the outer surface (4) is in close contact with a surrounding bronze matrix (5) containing Cu and Sn, and wherein the inner surface (3) is in close contact with an inner bronze matrix (5) also containing Cu and Sn, is characterized in that the inner bronze matrix (5) of the preliminary filament structure (1) encloses in its central region an elongated core (6) consisting of a metallic material, said metallic material having at room temperature (=RT) a thermal expansion coefficient αcore 300 MPa, said metallic material having at RT an elongation at rupture A>20%, and wherein the metallic material of the core (6) is chemically inert with respect to the material of the inner bronze matrix (5) up to a reaction temperature T of the solid state diffusion reaction. This element has improved superconductive properties in a large volume fraction of its superconductive filaments, in particular a high critical temperature Tc and a high critical magnetic filed strength Bc2, and is mechanically stable enough for commercial applications such as magnet coils.

摘要翻译： 包含Nb 3 Sn的超导元件，特别是复丝线，其包含至少一个通过来自预备丝状结构（1）的固态扩散反应获得的超导细丝（8），所述预丝细丝结构（1）包含细长的中空 具有内表面（3）和外表面（4）的管（2），其中所述中空管（2）由Nb或Nb合金特别是NbTa组成，其中外表面（4）与 包含Cu和Sn的周围青铜基体（5），并且其中所述内表面（3）与还含有Cu和Sn的内部青铜基体（5）紧密接触，其特征在于，所述内部青铜基体（5） 预备细丝结构（1）在其中心区域包围由金属材料组成的细长芯（6），所述金属材料在室温（= RT）下具有热膨胀系数α1<17 * 10-6K-1，优选 我说，alphacore <= 8 * 10-6 K-1 所述金属材料在室温下具有屈服强度R p 0.2> 300MPa，所述金属材料在RT处具有断裂伸长率> 20％，并且其中所述芯体（6）的金属材料相对于 内部青铜基质（5）直至固态扩散反应的反应温度T. 该元件在其超导细丝的大体积分数，特别是高临界温度Tc和高临界磁场强度Bc2中具有改进的超导性能，并且对于商业应用如磁体线圈具有机械稳定性。

公开(公告)号：US20110136672A1

公开(公告)日：2011-06-09

申请号：US12926189

申请日：2010-11-01

申请人： Florin Buta ,  René Flükiger

发明人： Florin Buta ,  René Flükiger

IPC分类号： H01B12/02 ,  F16L9/00 ,  H01L39/24

CPC分类号： H01L39/2403 ,  H01L39/14 ,  Y10T29/49014

摘要： A hollow tube (1), for inserting superconductor precursor material such as superconductor precursor rods (13) into its bore (3), wherein the tube (1) extends along an axial direction, and wherein the tube (1) comprises a matrix (4) made of a first ductile material, is characterized in that a plurality of continuous filaments (5), extending along the axial direction of the tube (1), are distributed in the matrix (4), wherein the continuous filaments (5) are made of a second ductile material. With the invention, a good quality mechanical reinforcement of superconductor wires, in particular which can be used without later hot extrusion, can be achieved.

摘要翻译： 一种中空管（1），用于将超导体前体材料例如超导体前体棒（13）插入其孔（3）中，其中管（1）沿轴向延伸，并且其中管（1）包括矩阵 4），其特征在于沿着管（1）的轴向延伸的多个连续长丝（5）分布在基体（4）中，其中连续长丝（5） 由第二延性材料制成。 利用本发明，可以实现超导线的优质机械加强，特别是可以在不后热挤压的情况下使用。

公开(公告)号：US07887644B2

公开(公告)日：2011-02-15

申请号：US11482949

申请日：2006-07-10

申请人： René Flükiger ,  Daniel Eckert

发明人： René Flükiger ,  Daniel Eckert

IPC分类号： H01L39/24 ,  H01B12/00

CPC分类号： H01L39/2409 ,  H01L39/14 ,  Y10T29/49014

摘要： The invention relates to a composite (1), comprising a Cu—Sn bronze matrix (2) and filaments (3) surrounded by the bronze matrix (2), wherein the filaments (3) contain niobium (═Nb) or a Nb alloy, characterized in that the filaments (3) contain between 0.3% and 20% of volume of copper (═Cu) substructures (4), which are distributed within the Nb or the Nb alloy. The composite can be used to produce a superconducting element with the bronze route which has an improved critical current density.

摘要翻译： 本发明涉及一种由青铜基体（2）包围的Cu-Sn青铜基体（2）和长丝（3）的复合体（1），其中长丝（3）含有铌（= Nb）或Nb合金 其特征在于，所述长丝（3）含有分布在Nb或Nb合金中的铜（═Cu）亚结构（4）的体积的0.3％至20％。 该复合材料可用于生产具有改进的临界电流密度的青铜路线的超导元件。