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    Production of oxide superconductors having large magnetic levitation force
    2.
    发明授权
    Production of oxide superconductors having large magnetic levitation force 失效
    生产具有较大磁悬浮力的氧化物超导体

    公开(公告)号：US5474976A

    公开(公告)日：1995-12-12

    申请号：US39561

    申请日：1993-03-29

    申请人： Akihiro Kondoh ,  Masato Murakami ,  Hiroshi Takaichi ,  Naoki Koshizuka ,  Shoji Tanaka ,  Shoichi Kagiya

    发明人： Akihiro Kondoh ,  Masato Murakami ,  Hiroshi Takaichi ,  Naoki Koshizuka ,  Shoji Tanaka ,  Shoichi Kagiya

    IPC分类号： C04B35/45 ,  C04B35/653 ,  H01L39/12 ,  H01L39/24

    CPC分类号： C04B35/653 ,  C04B35/4504 ,  H01L39/126 ,  H01L39/2483

    摘要： A method for producing an REBaCuO oxide superconductor having large magnetic levitation force, where RE is a rare earth element selected from the group consisting of Y, Sm, Eu, Gd, Dy, Ho, Er, and Yb, involves the steps of using a raw material mixture as the starting feed, heating the raw material mixture for partial melting, followed by cooling and solidification, pulverizing and mixing the resulting solid, shaping the resulting mixture into a given shape, placing or embedding nucleates on or in the resulting shape, followed by heating for partial melting, and cooling the resulting partial melt to a substantial temperature at which a superconducting phase starts to form, followed by slow cooling, whereby the superconducting phase is preferentially formed and grown from a nucleation site.

    摘要翻译： 制备具有大的磁悬浮力的REBaCuO氧化物超导体的方法，其中RE是选自Y，Sm，Eu，Gd，Dy，Ho，Er和Yb的稀土元素，包括使用 原料混合物作为起始原料，加热原料混合物进行部分熔融，然后冷却和固化，粉碎和混合所得固体，将所得混合物成形为给定形状，将成核体放置或嵌入所形成的形状， 然后加热部分熔融，并将所得部分熔体冷却至开始形成超导相的实质温度，然后缓慢冷却，由此优选从成核位点形成和生长超导相。

    Superconductor and method of producing same
    4.
    发明授权
    Superconductor and method of producing same 失效
    超导体及其制造方法

    公开(公告)号：US5525584A

    公开(公告)日：1996-06-11

    申请号：US452138

    申请日：1995-05-26

    申请人： Masato Murakami ,  Sang-Im Yoo ,  Naomichi Sakai ,  Hiroshi Takaichi ,  Takamitsu Higuchi ,  Shoji Tanaka

    发明人： Masato Murakami ,  Sang-Im Yoo ,  Naomichi Sakai ,  Hiroshi Takaichi ,  Takamitsu Higuchi ,  Shoji Tanaka

    IPC分类号： H01L39/12 ,  H01B12/00

    CPC分类号： H01L39/126 ,  Y10S505/742 ,  Y10S505/778 ,  Y10S505/779 ,  Y10S505/785

    摘要： A high critical temperature and high critical current density superconductor is disclosed which contains a metal oxide expressed by the following formula (I):(R.sup.1.sub.1-x,Ba.sub.x)Ba.sub.2 Cu.sub.3 O.sub.d (I)wherein R.sup.1 stands for at least one element selected from the group consisting of La, Nd, Sm, Eu and Gd, x is a number greater than 0 but not greater than 0.5 and d is a number between 6.2 and 7.2. Fine phases of RE211, RE422 and/or a metal oxide expressed by the formula (R.sup.2.sub.1-z, Ba.sub.z) (Ba.sub.1-y, R.sup.2.sub.y).sub.2 Cu.sub.3 O.sub.p (R.sup.2 =La, Nd, Sm, Eu or Gd) may be dispersed in a matrix of the matrix phase of the formula (I). The above superconductor may be obtained by cooling a melt having a temperature of 1,000.degree.-1,300.degree. C. and containing R.sup.1, Ba, Cu and O at a cooling rate of 5.degree. C./hour or less under a partial pressure of oxygen of between 0.00001 and 0.05 atm, followed by annealing at 250.degree.-600.degree. C. in an oxygen atmosphere.

    摘要翻译： 公开了一种高临界温度和高临界电流密度超导体，其包含由下式（I）表示的金属氧化物：（R11-x，Bax）Ba2Cu3Od（I）其中R1代表选自以下的至少一种元素： 的La，Nd，Sm，Eu和Gd，x是大于0但不大于0.5的数，d是6.2和7.2之间的数。 RE211，RE422和/或由式（R21-z，Baz）（Ba1-y，R2y）2Cu3Op（R2 = La，Nd，Sm，Eu或Gd）表示的金属氧化物的细相可以分散在基质 的式（I）的基质相。 上述超导体可以通过在5℃/小时以下的冷却速度下，在温度为1000〜-1300℃的温度下冷却含有R 1，Ba，Cu和O的熔体， 在0.00001和0.05atm之间，然后在氧气氛中在250-600℃退火。

    Superconductor and method of producing same
    5.
    发明授权
    Superconductor and method of producing same 失效
    超导体及其制造方法

    公开(公告)号：US5849667A

    公开(公告)日：1998-12-15

    申请号：US683915

    申请日：1996-07-19

    申请人： Masato Murakami ,  Sang-Im Yoo ,  Naomichi Sakai ,  Hiroshi Takaichi ,  Takamitsu Higuchi ,  Shoji Tanaka

    发明人： Masato Murakami ,  Sang-Im Yoo ,  Naomichi Sakai ,  Hiroshi Takaichi ,  Takamitsu Higuchi ,  Shoji Tanaka

    IPC分类号： H01L39/12 ,  H01B12/00 ,  C04B35/50

    CPC分类号： H01L39/126 ,  Y10S505/742 ,  Y10S505/778 ,  Y10S505/779 ,  Y10S505/785

    摘要： A high critical temperature and high critical current density superconductor is disclosed which contains a metal oxide expressed by the following formula (I): (R.sup.1.sub.1-x, Ba.sub.x)Ba.sub.2 Cu.sub.3 O.sub.d (I) wherein R.sup.1 stands for at least one element selected from the group consisting of La, Nd, Sm, Eu and Gd, x is a number greater than 0 but not greater than 0.5 and d is a number between 6.2 and 7.2. Fine phases of RE211, RE422 and/or a metal oxide expressed by the formula (R.sup.2.sub.1-z, Ba.sub.z) (Ba.sub.1-y, R.sup.2.sub.y).sub.2 Cu.sub.3 O.sub.p (R.sup.2 =La, Nd, Sm, Eu or Gd) may be dispersed in a matrix of the matrix phase of the formula (I). The above superconductor may be obtained by cooling a melt having a temperature of 1,000.degree.-1,300.degree. C. and containing R.sup.1, Ba, Cu and O at a cooling rate of 5.degree. C./hour or less under a partial pressure of oxygen of between 0.00001 and 0.05 atm, followed by annealing at 250.degree.-600.degree. C. in an oxygen atmosphere.

    摘要翻译： 公开了一种高临界温度和高临界电流密度超导体，其包含由下式（I）表示的金属氧化物:( R11-x，Bax）Ba2Cu3Od（I）其中R1表示选自以下的至少一种元素： 的La，Nd，Sm，Eu和Gd，x是大于0但不大于0.5的数，d是6.2和7.2之间的数。 RE211，RE422和/或由式（R21-z，Baz）（Ba1-y，R2y）2Cu3Op（R2 = La，Nd，Sm，Eu或Gd）表示的金属氧化物的细相可以分散在基质 的式（I）的基质相。 上述超导体可以通过在5℃/小时以下的冷却速度下，在温度为1000〜-1300℃的温度下冷却含有R 1，Ba，Cu和O的熔体， 在0.00001和0.05atm之间，然后在氧气氛中在250-600℃退火。

    Composite of high-temperature superconductive bulk form with coil magnet
    6.
    发明授权
    Composite of high-temperature superconductive bulk form with coil magnet 失效
    高温超导体与线圈磁体复合

    公开(公告)号：US5543768A

    公开(公告)日：1996-08-06

    申请号：US319569

    申请日：1994-10-07

    申请人： Masato Murakami ,  Hiroshi Takaichi ,  Shoji Tanaka ,  Naomichi Sakai

    发明人： Masato Murakami ,  Hiroshi Takaichi ,  Shoji Tanaka ,  Naomichi Sakai

    IPC分类号： H01B13/00 ,  H01F6/00 ,  H01F6/06 ,  H01F1/00

    CPC分类号： H01F6/06

    摘要： A composite magnet comprising a core of R-Ba-Cu-O type bulk superconductor (R denotes rare-earth elements) made by melt process, enclosed around it with normal conductive or superconductive coil, or a composite magnet including a center of normal conductive or superconductive coil, enclosed around it with ring-shaped R-Ba-Cu-O type bulk superconductor (R denotes rare-earth elements) made by melt process is disclosed, which allows easy control of generating magnetic field and gives a relatively strong magnetic field even at a temperature as high as that of liquid nitrogen.

    摘要翻译： 一种复合磁体，包括由熔融法制成的R-Ba-Cu-O型体超导体（R表示稀土元素）的核心，用正常的导电或超导线圈封闭，或者包括正常导电中心的复合磁体 或超导线圈，其周围围绕着由熔体制造的环形R-Ba-Cu-O型体超导体（R表示稀土元素）包围，这允许容易地控制产生磁场并产生相对强的磁 即使在与液氮相同的温度下也是如此。

    Superconducting bearing device
    8.
    发明授权
    Superconducting bearing device 失效
    超导轴承装置

    公开(公告)号：US5801469A

    公开(公告)日：1998-09-01

    申请号：US117088

    申请日：1994-02-08

    申请人： Ryoichi Takahata ,  Motoaki Shibayama ,  Hiroshi Takaichi

    发明人： Ryoichi Takahata ,  Motoaki Shibayama ,  Hiroshi Takaichi

    IPC分类号： F16C32/04 ,  F16C39/06 ,  H02J15/00 ,  H02K7/09

    CPC分类号： F16C32/0438 ,  F16C2240/40 ,  F16C2300/34

    摘要： A superconducting bearing device comprises an annular permanent magnetic portion 2 disposed concentrically with a rotary body 1 in the form of a vertical shaft, and superconductors 8 opposed to the lower end face of the magnet portion 2 and vertically spaced apart therefrom. The permanent magnet portion 2 comprises a disk 4 fixedly mounted on the rotary body 1, and annular permanent magnets 6a, 6b arranged on the disk 4 at a spacing radially of the rotary body 1. Each of the magnets 6a, 6b has upper and lower ends magnetized to polarities opposite to each other, and the adjacent magnets 6a, 6b are magnetized to polarities opposite to each other at the upper ends, as well as at the lower ends. The radial spacing between the magnets 6a, 6b is optimized in accordance with the radial dimension (width) of the magnets 6a, 6b. This improves the device in load capacity and rigidity and prevents the deflection of axis of the rotary body 1, enabling the bearing device to support the rotary body 1 in a noncontact state with good stability.

    摘要翻译： PCT No.PCT / JP92 / 00301 Sec。 371日期1994年2月8日 102（e）日期1994年2月8日PCT提交1992年3月13日PCT公布。 WO92 / 16762 PCT出版物 日期：1992年10月1日超导轴承装置包括与垂直轴形式的旋转体1同心设置的环形永磁部分2和与磁体部分2的下端面相对并且与其垂直间隔开的超导体8 。 永磁体部分2包括固定地安装在旋转体1上的盘4和以旋转体1的径向间隔设置在盘4上的环形永磁体6a，6b。每个磁体6a，6b具有上下 端部被磁化成彼此相反的极性，并且相邻的磁体6a，6b在上端以及在下端被磁化成彼此相反的极性。 磁体6a，6b之间的径向间隔根据磁体6a，6b的径向尺寸（宽度）进行优化。 这提高了装置的负载能力和刚性，并且防止旋转体1的轴线的偏转，使得轴承装置能够以非常接触的状态将旋转体1支撑在良好的稳定性。

    Superconducting bearing device
    9.
    发明授权
    Superconducting bearing device 失效
    超导轴承装置

    公开(公告)号：US5739606A

    公开(公告)日：1998-04-14

    申请号：US632612

    申请日：1996-04-15

    申请人： Ryoichi Takahata ,  Motoaki Shibayama ,  Hiroshi Takaichi

    发明人： Ryoichi Takahata ,  Motoaki Shibayama ,  Hiroshi Takaichi

    IPC分类号： F16C39/06 ,  H02K7/09

    CPC分类号： F16C32/0438 ,  F16C2300/34

    摘要： A superconducting bearing device comprises an annular permanent magnet portion disposed concentrically with a rotary body in the form of a vertical shaft, and superconductors opposed to the lower end face of the magnet portion and vertically spaced apart therefrom. The permanent magnet portion comprises a disk fixedly mounted on the rotary body, and annular permanent magnets embedded in the disk at a spacing radially of the rotary body. Each of the magnets has upper and lower ends magnetized to polarities opposite to each other, and the adjacent magnets are magnetized to polarities opposite to each other at the upper ends, as well as at the lower ends. The radial spacing between the magnets is optimized in accordance with the radial dimension (width) of the magnets. This improves the device in load capacity and rigidity and prevents the deflection of axis of the rotary body, enabling the bearing device to support the rotary body in a noncontact state with good stability.

    摘要翻译： 超导轴承装置包括与垂直轴形式的旋转体同心地设置的环形永磁体部分，以及与磁体部分的下端面相对并且与其垂直间隔开的超导体。 永磁体部分包括固定地安装在旋转体上的盘，以及以旋转体径向间隔嵌入盘中的环形永久磁体。 每个磁体具有被磁化成彼此相反的极性的上端和下端，并且相邻的磁体在上端以及在下端被磁化成彼此相反的极性。 根据磁体的径向尺寸（宽度）来优化磁体之间的径向间隔。 这提高了装置的负载能力和刚性，并且防止旋转体的轴线的偏转，使得轴承装置能够以非常接触的状态将旋转体支撑在良好的稳定性。