公开(公告)号：US06777376B1

公开(公告)日：2004-08-17

申请号：US09684336

申请日：2000-10-10

Applicant: Tetsuyuki Kaneko ,  Munetsugu Ueyama ,  Akira Mikumo ,  Naoki Ayai ,  Shin-ichi Kobayasi

Inventor： Tetsuyuki Kaneko ,  Munetsugu Ueyama ,  Akira Mikumo ,  Naoki Ayai ,  Shin-ichi Kobayasi

IPC: H01B1200

CPC classification number: H01L39/248 ,  H01L39/143

Abstract: In order to provide a superconducting wire that has a high critical current value, has no defects such as bulges, and has high mechanical strength, an oxide superconducting material (1) is covered, and ceramic particles or fibers (3) are buried in the surface of a covering (2) made of metal

Abstract translation: 为了提供具有高临界电流值的超导线，没有诸如凸起的缺陷，并且具有高的机械强度，覆盖了氧化物超导材料（1），陶瓷颗粒或纤维（3）被埋在 由金属制成的覆盖物（2）的表面

公开(公告)号：US06632776B2

公开(公告)日：2003-10-14

申请号：US09903622

申请日：2001-07-13

Applicant: Shinichi Kobayashi ,  Tetsuyuki Kaneko ,  Ryosuke Hata

Inventor： Shinichi Kobayashi ,  Tetsuyuki Kaneko ,  Ryosuke Hata

IPC: H01L3924

CPC classification number: H01L39/248 ,  C04B35/4525 ,  C04B35/62254 ,  C04B35/6262 ,  C04B2235/3208 ,  C04B2235/3213 ,  Y10S505/742 ,  Y10T29/49014

Abstract: The method of preparing an oxide superconducting wire comprises steps of preparing a wire by coating raw material powder for a Bi—Pb—Sr—Ca—Cu—O based oxide superconductor including a 2223 phase with a metal and heat treating the wire in a pressurized atmosphere containing oxygen in a prescribed partial pressure, and the total pressure of the pressurized atmosphere is at least 0.5 MPa. The pressure heat treatment apparatus comprises a pressure furnace storing and heat treating a target in a pressurized atmosphere, a pressure regulator for measuring the total pressure in the pressure furnace, an oxygen concentration meter for measuring the oxygen concentration in the pressure furnace and a controller for controlling the oxygen partial pressure in the pressure furnace in response to the total pressure measured by the pressure regulator and the oxygen concentration measured by the oxygen concentration meter.

Abstract translation: 制备氧化物超导线的方法包括以下步骤：通过将包含2223相的Bi-Pb-Sr-Ca-Cu-O基氧化物超导体的原料粉末涂覆在金属上并在加压 含有规定分压的氧的气氛，加压气氛的总压为至少0.5MPa。 压力热处理装置包括在加压气氛中存储和热处理靶的压力炉，用于测量压力炉中的总压的压力调节器，用于测量压力炉中的氧浓度的氧浓度计，以及用于 响应于由压力调节器测量的总压力和由氧浓度计测量的氧气浓度来控制压力炉中的氧气分压。

公开(公告)号：US06546614B2

公开(公告)日：2003-04-15

申请号：US09920947

申请日：2001-08-03

Applicant: Tetsuyuki Kaneko ,  Naoki Ayai ,  Jun Fujikami ,  Shinichi Kobayashi

Inventor： Tetsuyuki Kaneko ,  Naoki Ayai ,  Jun Fujikami ,  Shinichi Kobayashi

IPC: H01L3924

CPC classification number: H01L39/248 ,  Y10T29/49014

Abstract: The diameter of a first metal tube charged with raw material powder is reduced for obtaining an elementary wire. A plurality of such elementary wires are charged into a second metal tube, which in turn is reduced in diameter for obtaining a round first wire having a plurality of first filaments. The first wire is uniaxially compressed thereby obtaining a tape-like second wire having a plurality of second filaments. The second wire is heat treated thereby obtaining an oxide superconducting wire including a plurality of superconductor filaments. The maximum grain size of the raw material powder is smaller than the minor diameter of the first or second filaments.

公开(公告)号：US06507746B2

公开(公告)日：2003-01-14

申请号：US09788492

申请日：2001-02-21

Applicant: Tetsuyuki Kaneko

Inventor： Tetsuyuki Kaneko

IPC: H01B1200

CPC classification number: H01L39/143 ,  H01L39/248 ,  Y10S428/93

Abstract: The present invention provides an oxide superconducting wire including a component provided in the form of a tape and a metal tape. The component in the form of a tape has an oxide superconducting member and a metal coating member formed mainly of silver and coating a surface of the oxide superconducting member. The metal tape, bonded in a heat treatment (e.g., fusion- or diffusion-bonded) to a surface of the component in the form of a tape, does not contain any superconducting material and it is formed mainly of silver and it also contains at least one component other than silver.

Abstract translation: 本发明提供一种氧化物超导线，其包括以带状和金属带的形式提供的部件。 胶带形式的部件具有氧化物超导部件和主要由银形成并涂覆氧化物超导部件表面的金属涂层部件。 以胶带的形式在组件的表面进行热处理（例如，熔融或扩散粘合）粘合的金属带不包含任何超导材料，并且其主要由银形成，并且还包含在 除银以外的最少一种成分。

公开(公告)号：US06713437B2

公开(公告)日：2004-03-30

申请号：US10279833

申请日：2002-10-25

Applicant: Shinichi Kobayashi ,  Tetsuyuki Kaneko ,  Ryosuke Hata

Inventor： Shinichi Kobayashi ,  Tetsuyuki Kaneko ,  Ryosuke Hata

IPC: F27D1900

CPC classification number: H01L39/248 ,  C04B35/4525 ,  C04B35/62254 ,  C04B35/6262 ,  C04B2235/3208 ,  C04B2235/3213 ,  Y10S505/742 ,  Y10T29/49014

Abstract: The method of preparing an oxide superconducting wire comprises steps of preparing a wire by coating raw material powder for a Bi—Pb—Sr—Ca—Cu—O based oxide superconductor including a 2223 phase with a metal and heat treating the wire in a pressurized atmosphere containing oxygen in a prescribed partial pressure, and the total pressure of the pressurized atmosphere is at least 0.5 MPa. The pressure heat treatment apparatus comprises a pressure furnace storing and heat treating a target in a pressurized atmosphere, a pressure regulator for measuring the total pressure in the pressure furnace, an oxygen concentration meter for measuring the oxygen concentration in the pressure furnace and a controller for controlling the oxygen partial pressure in the pressure furnace in response to the total pressure measured by the pressure regulator and the oxygen concentration measured by the oxygen concentration meter.

Abstract translation: 制备氧化物超导线的方法包括以下步骤：通过将包含2223相的Bi-Pb-Sr-Ca-Cu-O基氧化物超导体的原料粉末涂覆在金属上并在加压 含有规定分压的氧的气氛，加压气氛的总压为至少0.5MPa。 压力热处理装置包括在加压气氛中存储和热处理靶的压力炉，用于测量压力炉中的总压的压力调节器，用于测量压力炉中的氧浓度的氧浓度计，以及用于 响应于由压力调节器测量的总压力和由氧浓度计测量的氧气浓度来控制压力炉中的氧气分压。

公开(公告)号：US5936394A

公开(公告)日：1999-08-10

申请号：US28929

申请日：1998-02-24

Applicant: Tetsuyuki Kaneko ,  Tetsuaki Sashida

Inventor： Tetsuyuki Kaneko ,  Tetsuaki Sashida

IPC: G01N27/00 ,  G01R31/00 ,  G01R33/12 ,  G01R19/00

CPC classification number: G01R33/1246 ,  Y10S505/843

Abstract: Method and apparatus of measuring a critical current value of a superconducting wire formed by wire sections S(n), n being 1.ltoreq.n.ltoreq.N and initially set to 1, comprising a first step (a) of determining electric currents I(m), m being 1.ltoreq.m.ltoreq.M; a second step (b) of setting m to 1; a third step (c) of passing the electric current I(m) through the wire section S(n); a fourth step (d) of detecting a voltage generated in the wire section S(n) by the electric current I(m); a fifth step (e) of replacing m with m+1; a sixth step (f) of repeating the steps (c) to (e) until m is equal to M; a seventh step (g) of replacing n with n+1; an eighth step (h) of repeating the steps (b)-(g) until n is equal to N, thereby obtaining N.times.M voltages; a ninth step (i) of setting m to 1; a tenth step (j) of summing up the N voltages generated by the same electric current I(m) to obtain a summation voltage represented by Vsum(m); an eleventh step (k) of replacing m with m+1 after the step (j); a twelfth step (l) of repeating the steps (j) and (k) until m is equal to M, thereby obtaining M summation voltages Vsum(m); and a thirteenth step (m) of calculating the critical current value of the superconducting wire on the basis of a reference voltage and a relationship between the summation voltages Vsum(m) and the electric currents I(m), the reference voltage being predetermined depending upon the superconducting wire length.

Abstract translation: 测量由导线部分S（n）形成的超导线的临界电流值的方法和装置，n是初始设定为1，包括确定电流的第一步骤（a） I（m），m为1 m = M; 将m设置为1的第二步骤（b）; 使电流I（m）通过导线部S（n）的第三步骤（c）。 通过电流I（m）检测线段S（n）中产生的电压的第四步骤（d）; 用m + 1代替m的第五步（e）; 重复步骤（c）至（e）的第六步骤（f），直到m等于M; 用n + 1代替n的第七步（g）; 重复步骤（b） - （g）直到n等于N的第八步（h），从而获得N×M电压; 将m设置为1的第九步骤（i）; 对由相同电流I（m）产生的N电压求和以得到由Vsum（m）表示的求和电压的第十步骤（j）; 在步骤（j）之后用m + 1替换m的第十一步骤（k）; 重复步骤（j）和（k）的第十二步骤（1），直到m等于M，从而获得M个加和电压Vsum（m）; 以及基于参考电压和求和电压Vsum（m）和电流I（m）之间的关系来计算超导线的临界电流值的第十三步骤（m），所述参考电压是预定的，取决于 超导线长度。

公开(公告)号：US08565845B2

公开(公告)日：2013-10-22

申请号：US12293143

申请日：2008-02-06

Applicant: Shinichi Kobayashi ,  Tetsuyuki Kaneko

Inventor： Shinichi Kobayashi ,  Tetsuyuki Kaneko

IPC: H01F6/06 ,  H01B12/02

CPC classification number: H01F6/06

Abstract: The invention offers a superconducting coil that has the shape of a pancake formed by winding a superconducting conductor. The superconducting conductor is composed of a tape-shaped (Bi, Pb)2223-based superconducting wire and a tape-shaped thin-film RE123-based superconducting wire that are electrically connected in parallel with each other. The coil generates only a low voltage in the steady-operation state, limits the generated voltage to a low level even in a state where an external disturbance enters for some reason, and is therefore less susceptible to quenching. Consequently, the coil can be operated stably in both states. The invention also offers a superconducting conductor to be used to form the coil.

Abstract translation: 本发明提供一种超导线圈，其具有通过缠绕超导导体形成的薄饼形状。 超导导体由彼此并联电连接的带状（Bi，Pb）2223基超导线和带状薄膜RE123基超导线构成。 线圈在稳定运行状态下仅产生低电压，即使在由于某种原因导致外部干扰进入的状态下也将发电电压限制在低电平，因此不易于淬火。 因此，能够以两种状态稳定地操作线圈。 本发明还提供一种用于形成线圈的超导导体。

公开(公告)号：US20090093370A1

公开(公告)日：2009-04-09

申请号：US12293143

申请日：2008-02-06

Applicant: Shinichi Kobayashi ,  Tetsuyuki Kaneko

Inventor： Shinichi Kobayashi ,  Tetsuyuki Kaneko

IPC: H01F6/06

CPC classification number: H01F6/06

Abstract: The invention offers a superconducting coil that has the shape of a pancake formed by winding a superconducting conductor. The superconducting conductor is composed of a tape-shaped (Bi, Pb)2223-based superconducting wire and a tape-shaped thin-film RE123-based superconducting wire that are electrically connected in parallel with each other. The coil generates only a low voltage in the steady-operation state, limits the generated voltage to a low level even in a state where an external disturbance enters for some reason, and is therefore less susceptible to quenching. Consequently, the coil can be operated stably in both states. The invention also offers a superconducting conductor to be used to form the coil.

Abstract translation: 本发明提供一种超导线圈，其具有通过缠绕超导导体形成的薄饼形状。 超导导体由彼此并联电连接的带状（Bi，Pb）2223基超导线和带状薄膜RE123基超导线构成。 线圈在稳定运行状态下仅产生低电压，即使在由于某种原因导致外部干扰进入的状态下也将发电电压限制在低电平，因此不易于淬火。 因此，能够以两种状态稳定地操作线圈。 本发明还提供一种用于形成线圈的超导导体。

公开(公告)号：US06642182B2

公开(公告)日：2003-11-04

申请号：US10254780

申请日：2002-09-26

Applicant: Tetsuyuki Kaneko

Inventor： Tetsuyuki Kaneko

IPC: H01L3924

CPC classification number: H01L39/143 ,  H01L39/248 ,  Y10S428/93

Abstract: The present invention provides an oxide superconducting wire including a component provided in the form of a tape and a metal tape. The component in the form of a tape has an oxide superconducting member and a metal coating member formed mainly of silver and coating a surface of the oxide superconducting member. The metal tape, bonded in a heat treatment (e.g., fusion- or diffusion-bonded) to a surface of the component in the form of a tape, does not contain any superconducting material and it is formed mainly of silver and it also contains at least one component other than silver.

公开(公告)号：US06493925B1

公开(公告)日：2002-12-17

申请号：US09666153

申请日：2000-09-19

Applicant: Tetsuyuki Kaneko ,  Munetsugu Ueyama ,  Akira Mikumo ,  Naoki Ayai ,  Shin-ichi Kobayashi

Inventor： Tetsuyuki Kaneko ,  Munetsugu Ueyama ,  Akira Mikumo ,  Naoki Ayai ,  Shin-ichi Kobayashi

IPC: H01L3924

CPC classification number: H01L39/248 ,  Y10T29/49014

Abstract: Powder including at least a superconducting phase is degassed (step S1). After the powder is filled in a silver pipe (step S2), the silver pipe is degassed at a high temperature (step S3). After a plurality of single-core wires are inserted into another silver pipe to attain a multi-core structure, the silver pipe is degassed at a high temperature (step S5). The silver pipe is sealed under a reduced pressure (step S6). Therefore, even when a multi-core superconducting wire is manufactured, a manufacturing method of a superconducting wire capable of preventing swelling of the wire caused by a residual gaseous component can be obtained.

Abstract translation: 至少包含超导相的粉末脱气（步骤S1）。 在粉末填充银管（步骤S2）之后，银管在高温下脱气（步骤S3）。 在将多根单芯线插入另一银管中以实现多芯结构之后，银管在高温下脱气（步骤S5）。 银管在减压下密封（步骤S6）。 因此，即使制造多芯超导线，也可以获得能够防止由残留的气体成分引起的电线膨胀的超导线的制造方法。