公开(公告)号：US5063200A

公开(公告)日：1991-11-05

申请号：US230053

申请日：1988-08-09

申请人： Michiya Okada ,  Tadaoki Morimoto ,  Akira Okayama ,  Yoshimi Yanai ,  Hiroshi Satoh ,  Toshimi Matsumoto ,  Yoshiteru Chiba ,  Kimihiko Akahori ,  Takahiko Kato ,  Toshiya Doi ,  Kazuhide Tanaka

发明人： Michiya Okada ,  Tadaoki Morimoto ,  Akira Okayama ,  Yoshimi Yanai ,  Hiroshi Satoh ,  Toshimi Matsumoto ,  Yoshiteru Chiba ,  Kimihiko Akahori ,  Takahiko Kato ,  Toshiya Doi ,  Kazuhide Tanaka

IPC分类号： C04B35/45 ,  H01L39/24

CPC分类号： C04B35/4504 ,  H01L39/248 ,  Y10S428/93 ,  Y10S505/701 ,  Y10S505/702 ,  Y10S505/703 ,  Y10S505/704

摘要： The present invention provides a shaped superconductor article such as wire, tape or disk, comprising an oxide superconductor phase and a metal phase in a monolayered or multilayered form, the metal phase comprising a copper, iron, nickel or titanium base alloy containing 1 to 10% by weight of aluminum and having an oxygen-impermeable oxide film formed thereon, preventing the diffusion of oxygen from the oxide superconductor phase to the metal phase.

摘要翻译： 本发明提供一种成形的超导体制品，例如导线，带或盘，包括氧化物超导体相和单层或多层形式的金属相，所述金属相包含含有1至10的铜，铁，镍或钛基合金 重量百分比的铝，并且在其上形成不透氧的氧化膜，防止了氧从氧化物超导体相扩散到金属相。

公开(公告)号：US6103669A

公开(公告)日：2000-08-15

申请号：US448137

申请日：1995-05-23

申请人： Akira Okayama ,  Michiya Okada ,  Tadaoki Morimoto ,  Toshimi Matsumoto ,  Yoshimi Yanai ,  Hiroshi Satoh ,  Toshiya Doi ,  Kazuhide Tanaka ,  Takahiko Kato

发明人： Akira Okayama ,  Michiya Okada ,  Tadaoki Morimoto ,  Toshimi Matsumoto ,  Yoshimi Yanai ,  Hiroshi Satoh ,  Toshiya Doi ,  Kazuhide Tanaka ,  Takahiko Kato

IPC分类号： H01B12/04 ,  H01B13/00 ,  H01L39/14 ,  H01L39/24

CPC分类号： H01L39/143 ,  H01L39/248 ,  Y10T29/49014

摘要： This invention provides an oxide-type superconducting flat wire having a critical current density of at least 1,000 A/cm.sup.2, which comprises a Y--Ba--Cu oxide layer having a superconducting property and a silver layer surrounding the oxide layer and has so flat a cross section vertical to the longitudinal direction of the wire that the upper and lower lines between the oxide layer and the silver layers appearing on the cross section having a zone over they are parallel to each other, the thickness of the oxide layer being cold rolled in the range of 0.35 to 0.75 based on the whole thickness of the wire, the whole thickness being 0.2 mm or less, and the metal layer being deformable to follow the shrink deformation of the oxide layer when heat treated to be sintered, but rigid when used. This flat wire is produced by filling a silver-made tube with a Y--Ba--Cu oxide powder having a superconducting property, drawing the tube into a rod wire having a round cross section, then cold rolling the rod wire in the flat wire so that (t.sub.i -t)/t.sub.i .times.100 is equal to or greater than 90%, wherein t.sub.i is the whole thickness of the cross section of the rod wire before the cold rolling and t is the whole thickness of the cold-rolled flat wire, and then heat treating the flat wire to sinter the superconducting oxide.

摘要翻译： 本发明提供了具有至少1000A / cm 2的临界电流密度的氧化物型超导扁线，其包括具有超导特性的Y-Ba-Cu氧化物层和围绕氧化物层的银层，并且具有如此平坦的 横截面垂直于导线的纵向方向，在它们之间具有区域的横截面上出现的氧化物层和银层之间的上下线之间彼此平行，氧化层的厚度被冷轧 基于整个线材的0.35至0.75的范围，整个厚度为0.2mm或更小，并且当热处理烧结时，金属层可变形以跟随氧化物层的收缩变形，但是当使用时是刚性的 。 该扁线通过用具有超导特性的Y-Ba-Cu氧化物粉末填充银制管而制成，将管拉成具有圆形横截面的棒丝，然后将扁丝中的棒丝冷轧 （ti-t）/ tix100等于或大于90％，其中ti是冷轧前棒丝的横截面的整个厚度，t是冷轧扁丝的整个厚度， 然后对扁线进行热处理以烧结超导氧化物。

公开(公告)号：US5798312A

公开(公告)日：1998-08-25

申请号：US267003

申请日：1994-06-21

申请人： Michiya Okada ,  Kazuhide Tanaka ,  Toyotaka Yuasa ,  Toshimi Matsumoto ,  Katsuzo Aihara ,  Shinpei Matsuda

发明人： Michiya Okada ,  Kazuhide Tanaka ,  Toyotaka Yuasa ,  Toshimi Matsumoto ,  Katsuzo Aihara ,  Shinpei Matsuda

IPC分类号： C04B35/00 ,  C01G1/00 ,  C04B35/45 ,  C30B29/22 ,  H01B12/10 ,  H01B13/00 ,  H01F6/06 ,  H01L39/14 ,  H01L39/24 ,  H01B12/00

CPC分类号： H01L39/143 ,  H01F6/06 ,  H01L39/248 ,  Y10S428/93 ,  Y10S505/704 ,  Y10S505/705 ,  Y10T428/2927 ,  Y10T428/2933

摘要： An elongate superconductor wiring element having, as seen in section, oxide superconductor material regions in each of which the c-axes of the oxide superconductor crystals are aligned with each other and are transverse to the longitudinal axis of the element. To reduce the dependence of critical current density on angular position of the element relative to a magnetic field, there are a plurality of said regions whose alignment directions of the c-axes are different as between different ones of said regions, so that the wiring element comprises a plurality of said regions having respectively different c-axis alignment directions.

摘要翻译： 细长超导体布线元件具有如图所示的氧化物超导体材料区域，其中氧化物超导体晶体的c轴彼此对准并且横向于元件的纵向轴线。 为了减小临界电流密度对元件相对于磁场的角位置的依赖性，存在多个所述区域，其中c轴的取向方向在不同的所述区域之间不同，使得布线元件 包括具有分别不同c轴对准方向的多个所述区域。

公开(公告)号：US20070266795A1

公开(公告)日：2007-11-22

申请号：US11747960

申请日：2007-05-14

申请人： Kazuhide Tanaka ,  Masaya Takahashi ,  Michiya Okada ,  Hideki Abe ,  Motoharu Imai

发明人： Kazuhide Tanaka ,  Masaya Takahashi ,  Michiya Okada ,  Hideki Abe ,  Motoharu Imai

IPC分类号： G01F1/56

CPC分类号： G01F23/246

摘要： An object is to provide a liquid level sensor device for liquefied gas enabling measurement on a liquid level of liquefied gas having a boiling point in the vicinity of 21 K, e.g. liquid hydrogen, accurately and with good reproducibility and enabling simple production with good reproducibility. The present invention is a liquid level sensor device for liquefied gas including compound containing magnesium and boron arranged in succession in the longitudinal direction over the entire or a part of surface of a linear conductor made of metal and a portion of the compound thereof dipped in liquid is in a superconductive state at liquid level measurement.

摘要翻译： 本发明的目的是提供一种用于液化气体的液面传感器装置，其能够测量沸点在21K附近的液化气体液面，例如液体。 液态氢，准确，重现性好，可重复性好，生产简单。 本发明是一种用于液化气体的液位传感器装置，其包括在由金属制成的直线导体的整个或一部分表面上沿纵向连续布置的含有镁和硼的化合物，并且其部分化合物浸入液体中 在液位测量时处于超导状态。

公开(公告)号：US20070194870A1

公开(公告)日：2007-08-23

申请号：US11654008

申请日：2007-01-17

申请人： Masaya Takahashi ,  Kazuhide Tanaka ,  Michiya Okada

发明人： Masaya Takahashi ,  Kazuhide Tanaka ,  Michiya Okada

IPC分类号： H01F6/00

CPC分类号： H01L39/20

摘要： There is disclosed a permanent current switch which has a high temperature margin and which is thermally stable and which securely performs a switching operation between a superconducting state and a normal conducting state. The permanent current switch of the present invention has a coiled superconducting wire and a heater wire which switches the superconducting wire between the superconducting state and the normal conducting state, the superconducting wire is a magnesium diboride superconducting wire having a high-resistance metal on an outer side and a magnesium diboride superconducting portion on an inner side and prepared by forming a superconducting metal on a layer between the high-resistance metal and the magnesium diboride superconducting portion, and the permanent current switch further comprises a superconductive connecting section superconductively connected to a lead wire guided from the superconducting wire and a superconducting wire for a wiring line.

摘要翻译： 公开了一种具有高温裕度并且是热稳定的并且可靠地执行超导状态和正常导通状态之间的开关操作的永久电流开关。 本发明的永久电流开关具有线圈超导线和在超导状态和正常导通状态之间切换超导线的加热线，超导线是在外部具有高电阻金属的二硼化硼超导线 侧面和二硼化镁超导部分，并且通过在高电阻金属和二硼化硼超导部分之间的层上形成超导金属而制备，并且所述永久电流开关还包括超导连接部分，其超导连接到引线 从超导线引导的线和用于布线的超导线。

公开(公告)号：US07602269B2

公开(公告)日：2009-10-13

申请号：US11654008

申请日：2007-01-17

申请人： Masaya Takahashi ,  Kazuhide Tanaka ,  Michiya Okada

发明人： Masaya Takahashi ,  Kazuhide Tanaka ,  Michiya Okada

IPC分类号： H01F7/00 ,  H01F1/00 ,  H01F6/00

CPC分类号： H01L39/20

摘要： There is disclosed a permanent current switch which has a high temperature margin and which is thermally stable and which securely performs a switching operation between a superconducting state and a normal conducting state. The permanent current switch of the present invention has a coiled superconducting wire and a heater wire which switches the superconducting wire between the superconducting state and the normal conducting state, the superconducting wire is a magnesium diboride superconducting wire having a high-resistance metal on an outer side and a magnesium diboride superconducting portion on an inner side and prepared by forming a superconducting metal on a layer between the high-resistance metal and the magnesium diboride superconducting portion, and the permanent current switch further comprises a superconductive connecting section superconductively connected to a lead wire guided from the superconducting wire and a superconducting wire for a wiring line.

摘要翻译： 公开了一种具有高温裕度并且是热稳定的并且可靠地执行超导状态和正常导通状态之间的开关操作的永久电流开关。 本发明的永久电流开关具有线圈超导线和在超导状态和正常导通状态之间切换超导线的加热线，超导线是在外部具有高电阻金属的二硼化硼超导线 侧面和二硼化镁超导部分，并且通过在高电阻金属和二硼化硼超导部分之间的层上形成超导金属而制备，并且所述永久电流开关还包括超导连接部分，其超导连接到引线 从超导线引导的线和用于布线的超导线。

公开(公告)号：US07569520B2

公开(公告)日：2009-08-04

申请号：US11346317

申请日：2006-02-03

申请人： Kazuhide Tanaka ,  Masaya Takahashi ,  Michiya Okada ,  Hiroaki Kumakura ,  Hitoshi Kitaguchi

发明人： Kazuhide Tanaka ,  Masaya Takahashi ,  Michiya Okada ,  Hiroaki Kumakura ,  Hitoshi Kitaguchi

IPC分类号： H01L39/24 ,  H01L39/14

CPC分类号： H01L39/141 ,  H01L39/2487 ,  Y10S505/704

摘要： In a metal sheath MgB2 superconducting wire, it is intended to achieve a wire having increased current density and a long length at the same time, by densitying superconducting core part. The superconducting wire is manufactured by forming diffusion hardened layer on the inner surface of the sheath such that the hardness of the inner surface becomes higher than that of the outer surface, filling MgB2 superconductor, and further if necessary, a critical current density increasing material such as indium, copper, and tin, in a metal sheath, to subject it to wire drawing. For the metal sheath, a material with toughness such as steel is used. Even if the sheath is made to a long wire, it does not break, thereby, enabling to density superconducting core part.

摘要翻译： 在金属护套MgB2超导线中，通过密度超导芯部部分，旨在实现同时具有增加的电流密度和长的长度的导线。 超导线是通过在护套的内表面上形成扩散硬化层而制造的，使得内表面的硬度变得高于外表面的硬度，填充MgB 2超导体，并且如果需要，还需要临界电流密度增加材料 作为铟，铜和锡，在金属护套中进行拉丝。 对于金属护套，使用具有韧性的材料如钢。 即使鞘被制成长的线，也不会破裂，从而能够密集超导芯部。

公开(公告)号：US20080318794A1

公开(公告)日：2008-12-25

申请号：US12153483

申请日：2008-05-20

申请人： Masaya Takahashi ,  Kazuhide Tanaka ,  Michiya Okada

发明人： Masaya Takahashi ,  Kazuhide Tanaka ,  Michiya Okada

IPC分类号： H01B12/04 ,  H01L39/24

CPC分类号： H01L39/141 ,  C04B35/58057 ,  C04B2235/401 ,  C04B2235/421 ,  C04B2235/6581 ,  C04B2235/94 ,  H01L39/2487 ,  Y10T29/49014

摘要： A superconductive wire wherein the superconductive wire has a core portion containing magnesium diboride as the main component and a continuous metallic sheath firmly adhered to the core portion; the core portion is kept substantially vacuum; and the content of an inert gas such as an Ar gas contained in the core portion is in the range of 0.00002 to 10 ppm. Further, disclosed is a method for producing a superconductive wire, wherein the method comprises the steps of mixing powder of a source material constituting magnesium diboride to form a core portion of the superconductive wire in an inert gas, filling a pipe with the mixed material powder in vacuum environment, sealing the pipe with vacuum after filled with the material powder, forming magnesium diboride powder by heating the vacuum-sealed pipe (sheath), and forming the core portion by wiredrawing the pipe in the state where the magnesium diboride powder is sealed with vacuum, and the core portion firmly sticks to the wiredrawn metallic pipe. The core portion is kept vacuum, and the content of an inert gas contained in the core portion is in the range of 0.00002 to 10 ppm.

摘要翻译： 一种超导线，其中超导线具有含有二硼化镁作为主要成分的核心部分，并且连续的金属护套牢固地粘附在芯部分上; 芯部保持基本上真空; 并且包含在芯部中的诸如Ar气体的惰性气体的含量在0.00002至10ppm的范围内。 此外，公开了一种超导线的制造方法，其特征在于，包括以下步骤：混合构成二硼化硼的源材料的粉末，在惰性气体中形成超导线的芯部，用混合材料粉末填充管 在真空环境中，填充材料粉末后真空密封管道，通过加热真空密封管（护套）形成二硼化镁粉末，并在二硼化镁粉末密封的状态下通过拉丝管形成芯部 并且芯部牢固地粘附在拉丝金属管上。 核心部分保持真空，并且包含在芯部中的惰性气体的含量在0.00002至10ppm的范围内。

公开(公告)号：US07152302B2

公开(公告)日：2006-12-26

申请号：US10387591

申请日：2003-03-14

申请人： Hiroshi Morita ,  Kazuhide Tanaka ,  Yasuo Suzuki ,  Michiya Okada

发明人： Hiroshi Morita ,  Kazuhide Tanaka ,  Yasuo Suzuki ,  Michiya Okada

IPC分类号： H01L39/24 ,  H01B12/00

CPC分类号： H01L39/02 ,  H01R4/68 ,  Y10T29/49014

摘要： A method of producing an electrical connection structure between at least two superconducting lines. The method comprises adding metal powder or alloy powder to a superconducting material comprising magnesium diboride, intervening the superconducting material between at least two superconducting lines, and heating said superconducting lines and said superconducting material to a temperature lower than the melting point of said superconducting material prior to the addition of said metal powder or alloy powder thereto, but higher than the melting point of said metal powder or alloy powder.

摘要翻译： 一种在至少两条超导线之间产生电连接结构的方法。 该方法包括将金属粉末或合金粉末添加到包含二硼化硼的超导材料中，将超导材料介于至少两条超导线之间，并将所述超导线和所述超导材料加热到低于所述超导材料的熔点的温度 涉及添加所述金属粉末或合金粉末，但高于所述金属粉末或合金粉末的熔点。

公开(公告)号：US06921865B2

公开(公告)日：2005-07-26

申请号：US10083504

申请日：2002-02-27

申请人： Hiroshi Morita ,  Kazuhide Tanaka ,  Yasuo Suzuki ,  Michiya Okada

发明人： Hiroshi Morita ,  Kazuhide Tanaka ,  Yasuo Suzuki ,  Michiya Okada

IPC分类号： H01F6/06 ,  H01B12/02 ,  H01B13/00 ,  H01L39/02 ,  H01R4/68 ,  H01B12/00

CPC分类号： H01L39/02 ,  H01R4/68 ,  Y10T29/49014

摘要： Electrical connection of superconducting lines can be achieved by using a low-melting point metal, by mechanical contact of superconducting lines or by welding. According to these methods, however, critical current and critical magnetic field at the connection point are low, and stable connection in a superconducting state has been difficult. The present invention solves these problems and provides a structure and method for connecting superconducting lines. The present invention provides high-performance, high-stability connection of superconducting lines through magnesium diboride (MgB2) powder arranged between superconducting lines.

摘要翻译： 超导线的电连接可以通过使用低熔点金属，通过超导线的机械接触或通过焊接来实现。 然而，根据这些方法，连接点处的临界电流和临界磁场较低，并且在超导状态下的稳定连接困难。 本发明解决了这些问题，提供了连接超导线路的结构和方法。 本发明通过布置在超导线之间的二硼化镁（MgB 2 N 2）粉末提供超导线路的高性能，高稳定性的连接。