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    Method of preparing bismuth oxide superconducting wire
    1.
    发明授权
    Method of preparing bismuth oxide superconducting wire 失效
    制备氧化铋超导线的方法

    公开(公告)号：US06536096B2

    公开(公告)日：2003-03-25

    申请号：US08167581

    申请日：1993-12-15

    申请人： Kenichi Sato ,  Nobuhiro Shibuta ,  Hidehito Mukai ,  Takeshi Hikata ,  Munetsugu Ueyama ,  Takeshi Kato

    发明人： Kenichi Sato ,  Nobuhiro Shibuta ,  Hidehito Mukai ,  Takeshi Hikata ,  Munetsugu Ueyama ,  Takeshi Kato

    IPC分类号： H01L3924

    CPC分类号： H01L39/248 ,  C04B35/4521 ,  C04B35/4525 ,  Y10T29/49014

    摘要： Powder of not more than 1 &mgr;m in mean particle diameter is prepared to contain a mixture of superconducting phases mainly composed of 2212 phases of Bi—Sr—Ca—Cu or (Bi, Pb)—Sr—Ca—Cu and non-superconducting phases which is obtained by calcining and pulverizing raw material powder at least once, this powder is heat treated at a high temperature and thereafter coated with a metal to prepare a round wire by deformation processing, thereafter a tape type or flat type wire is prepared by deformation processing, then the wire is heat treated under conditions for allowing phase transformation of the 2212 phases of main superconducting phases to 2223 phases with facilitation of grain growth, thereafter the as-formed 2223 phases are highly densified by deformation processing or pressurization, and the wire is again heat treated so that the 2223 phases are strongly bonded with each other and the non-superconducting phases are finely dispersed. Thus, a bismuth oxide superconducting wire having a high critical current density is obtained.

    摘要翻译： 制备平均粒径不超过1um的粉末，其含有主要由2212相的Bi-Sr-Ca-Cu或（Bi，Pb）-Sr-Ca-Cu和非超导相的超导相的混合物 其通过将原料粉末煅烧和粉碎至少一次而获得，该粉末在高温下进行热处理，然后用金属涂覆以通过变形处理制备圆形线，然后通过变形来制备带状或扁平型线 然后在使主要超导相的2212相相变到2223相的条件下进行热处理，促进晶粒生长，此后形成的2223相通过变形加工或加压而高度致密化，并且导线 再次热处理使得2223相彼此牢固地结合，并且非超导相被细分散。 因此，获得具有高临界电流密度的氧化铋超导线。

    Method of preparing bismuth oxide superconductor
    4.
    发明授权
    Method of preparing bismuth oxide superconductor 失效
    制备氧化铋超导体的方法

    公开(公告)号：US5610123A

    公开(公告)日：1997-03-11

    申请号：US385240

    申请日：1995-02-08

    申请人： Kenichi Sato ,  Takeshi Hikata ,  Munetsugu Ueyama

    发明人： Kenichi Sato ,  Takeshi Hikata ,  Munetsugu Ueyama

    IPC分类号： C01G29/00 ,  C01G1/00 ,  C04B35/00 ,  C04B35/45 ,  H01B12/04 ,  H01B13/00 ,  H01L39/24

    CPC分类号： C04B35/4521 ,  C04B35/4525 ,  H01L39/248 ,  Y10S505/782 ,  Y10S505/928 ,  Y10T29/49014

    摘要： In a method of preparing a bismuth oxide superconducting wire comprising the steps of filling raw material powder into a metal sheath, working the same into a wire by performing deformation processing in this state, and heat treating the wire, the raw material powder is heat treated before the step of working the raw material powder into a wire by performing deformation processing, so that the ratio of a 2212 phase, containing Bi or (Bi,Pb), Sr, Ca and Cu in composition ratios of about 2:2:1:2, to a 2223 phase, containing Bi or (Bi,Pb), Sr, Ca and Cu in composition ratios of about 2:2:2:3, is 75 to 90:10 to 25, in order to prepare a wire which is excellent in critical current density as well as in critical current.

    摘要翻译： 在制备氧化铋超导线材的方法中，包括以下步骤：将原料粉末填充到金属护套中，通过在该状态下进行变形处理将其加工成线材，并对线材进行热处理，对原料粉末进行热处理 在将原料粉末进行变形处理的步骤之前，使含有Bi或（Bi，Pb），Sr，Ca和Cu的2212相的比例为约2：2：1 ：2〜2223相，含有Bi或（Bi，Pb），Sr，Ca和Cu的组成比为约2：2：2：3，为75〜90:10〜25，以制备线 其临界电流密度以及临界电流优良。

    Method of preparing oxide superconducting wire
    5.
    发明授权
    Method of preparing oxide superconducting wire 失效
    制备氧化物超导线的方法

    公开(公告)号：US5508254A

    公开(公告)日：1996-04-16

    申请号：US291237

    申请日：1994-08-16

    申请人： Kenichi Sato ,  Hidehito Mukai ,  Takeshi Hikata

    发明人： Kenichi Sato ,  Hidehito Mukai ,  Takeshi Hikata

    IPC分类号： B21F15/06 ,  B21F19/00 ,  B22F3/14 ,  C22C1/05 ,  H01B12/10 ,  H01B13/00 ,  H01L39/24

    CPC分类号： H01L39/248 ,  Y10S505/704 ,  Y10S505/742 ,  Y10T29/49014

    摘要： Disclosed herein is a method of preparing an oxide superconducting wire comprising the steps of coating a powder material for forming an oxide superconductor with a metal, performing deformation processing on the metal-coated powder material thereby obtaining a tape-type wire material, superposing a plurality of such tape-type wire materials, performing first heat treatment on the plurality of superposed tape-type wire materials while simultaneously diffusion-bonding the metallic coats to each other, then performing deformation processing on the plurality of superposed tape-type wire materials, and performing second heat treatment on the plurality of deformation-processed tape-type wire materials. Preferably the oxide superconductor to be obtained is a bismuth oxide superconductor having a 2223 composition in a composition of Bi-Sr-Ca-Cu or (Bi,Pb)-Sr-Ca-Cu, and the powder material consists of a superconducting phase, which is mainly composed of a 2212 phase, and non-superconducting phases.

    摘要翻译： 本文公开了一种制备氧化物超导线的方法，包括以下步骤：用金属涂覆用于形成氧化物超导体的粉末材料，对金属涂覆的粉末材料进行变形处理，从而获得带状线材，将多个 对这些带状线材进行第一热处理，同时使金属外壳彼此扩散接合，然后对多个重叠的带状线材进行变形处理， 对多个经变形处理的带状线材进行第二热处理。 优选地，要获得的氧化物超导体是Bi-Sr-Ca-Cu或（Bi，Pb）-Sr-Ca-Cu组成中具有2223组成的氧化铋超导体，并且该粉末材料由超导相组成， 主要由2212相和非超导相组成。

    Oxide superconducting wire
    6.
    发明授权
    Oxide superconducting wire 失效
    氧化物超导线

    公开(公告)号：US06357105B1

    公开(公告)日：2002-03-19

    申请号：US08999675

    申请日：1997-10-14

    申请人： Takeshi Hikata ,  Hidehito Mukai ,  Kenichi Sato

    发明人： Takeshi Hikata ,  Hidehito Mukai ,  Kenichi Sato

    IPC分类号： H01L3924

    CPC分类号： C04B35/45 ,  H01L39/143 ,  H01L39/248 ,  Y10T29/49014

    摘要： An oxide superconducting wire of an anisotropic oxide superconductor comprises a core part of the wire and a superconducting layer enclosing the core part so that specific crystal axes of the oxide superconductor are oriented toward the core part. A method of producing a wire of an anisotropic oxide superconductor comprises the steps of arranging a metal sheath around a metal rod for forming a core part of the wire and charging powder of the oxide superconductor in a clearance between the metal sheath and the metal rod for preparing a composite material, and plastically working the composite material so that the metal sheath is larger in reduction of area than the metal rod.

    摘要翻译： 各向异性氧化物超导体的氧化物超导线包括导线的芯部和包围芯部的超导层，使得氧化物超导体的特定晶轴朝向芯部。 制造各向异性氧化物超导体的线的方法包括以下步骤：在金属棒周围配置金属护套，以形成电线的芯部，并且在金属护套和金属棒之间的间隙中加入氧化物超导体的粉末， 制备复合材料，并且对复合材料进行塑性加工，使得金属护套的面积减小比金属棒大。

    Method of preparing oxide superconducting wire
    7.
    发明授权
    Method of preparing oxide superconducting wire 失效
    制备氧化物超导线的方法

    公开(公告)号：US5369089A

    公开(公告)日：1994-11-29

    申请号：US128010

    申请日：1993-09-27

    申请人： Kenichi Sato ,  Hidehito Mukai ,  Takeshi Hikata

    发明人： Kenichi Sato ,  Hidehito Mukai ,  Takeshi Hikata

    IPC分类号： B21F15/06 ,  B21F19/00 ,  B22F3/14 ,  C22C1/05 ,  H01B12/10 ,  H01B13/00 ,  H01L39/24

    CPC分类号： H01L39/248 ,  Y10S505/704 ,  Y10S505/742 ,  Y10T29/49014

    摘要： Disclosed herein is a method of preparing an oxide superconducting wire comprising the steps of coating a powder material for forming an oxide superconductor with a metal, performing deformation processing on the metal-coated powder material thereby obtaining a tape-type wire material, superposing a plurality of such tape-type wire materials, performing first heat treatment on the plurality of superposed tape-type wire materials while simultaneously diffusion-bonding the metallic coats to each other, then performing deformation processing on the plurality of superposed tape-type wire materials, and performing second heat treatment on the plurality of deformation-processed tape-type wire materials. Preferably the oxide superconductor to be obtained is a bismuth oxide superconductor having a 2223 composition in a composition of Bi--Sr--Ca--Cu or (Bi,Pb)--Sr--Ca--Cu, and the powder material consists of a superconducting phase, which is mainly composed of a 2212 phase, and non-superconducting phases.

    摘要翻译： 本文公开了一种制备氧化物超导线的方法，包括以下步骤：用金属涂覆用于形成氧化物超导体的粉末材料，对金属涂覆的粉末材料进行变形处理，从而获得带状线材，将多个 对这些带状线材进行第一热处理，同时使金属外壳彼此扩散接合，然后对多个重叠的带状线材进行变形处理， 对多个经变形处理的带状线材进行第二热处理。 优选地，要获得的氧化物超导体是Bi-Sr-Ca-Cu或（Bi，Pb）-Sr-Ca-Cu组成中具有2223组成的氧化铋超导体，并且该粉末材料由超导相组成， 主要由2212相和非超导相组成。

    Method of preparing Bi oxide superconducting wire
    8.
    发明授权
    Method of preparing Bi oxide superconducting wire 失效
    制备Bi氧化物超导线的方法

    公开(公告)号：US5807808A

    公开(公告)日：1998-09-15

    申请号：US400624

    申请日：1995-03-06

    申请人： Takeshi Hikata ,  Kenichi Sato

    发明人： Takeshi Hikata ,  Kenichi Sato

    IPC分类号： C01B13/14 ,  C01G1/00 ,  C01G29/00 ,  C04B35/45 ,  H01B12/04 ,  H01B13/00 ,  H01L39/24

    CPC分类号： C04B35/4521 ,  C04B35/4525 ,  H01L39/248 ,  Y10T29/49014

    摘要： In order to obtain a Bi--Sr--Ca--Cu--O or Bi--Pb--Sr--Ca--Cu--O oxide superconducting wire, raw material powder is pulverized to remove particles of non-superconducting phases having large particle sizes based on difference in particle size, and thereafter the raw material powder is covered with a sheath of silver or silver alloy, so that the sheath is subjected to plastic working and the raw material powder covered with the sheath is sintered.

    摘要翻译： 为了获得Bi-Sr-Ca-Cu-O或Bi-Pb-Sr-Ca-Cu-O氧化物超导线，将原料粉末粉碎以除去基于差异的具有大粒径的非超导相的颗粒 然后将原料粉末用银或银合金的鞘覆盖，使得护套进行塑性加工，并将被护套覆盖的原料粉末烧结。

    Method of preparing oxide high-temperature superconductor
    9.
    发明授权
    Method of preparing oxide high-temperature superconductor 失效
    制备氧化物高温超导体的方法

    公开(公告)号：US5663120A

    公开(公告)日：1997-09-02

    申请号：US316262

    申请日：1994-09-29

    申请人： Takeshi Hikata ,  Kenichi Sato

    发明人： Takeshi Hikata ,  Kenichi Sato

    IPC分类号： C04B35/00 ,  C01G1/00 ,  C04B35/45 ,  H01B12/04 ,  H01B13/00 ,  H01L39/24

    CPC分类号： H01L39/248 ,  Y10T29/49014

    摘要： In order to prevent expansion of a metal sheath which is heat treated in order to form an oxide high-temperature superconductor therein, the heat treatment temperature is held at a certain level in an intermediate stage of temperature rising in a step of heat treating the metal sheath after filling raw material for an oxide high-temperature superconductor into the metal sheath. After the heat treatment temperature is thus held at the certain level, the metal sheath is again heated to a target temperature. Preferably, the heat treatment temperature is held at a level which is selected in a range of at least 500.degree. C. and not more than 750.degree. C.

    摘要翻译： 为了防止热处理以在其中形成氧化物高温超导体的金属护套的膨胀，热处理温度在热处理金属的步骤的中间阶段保持在一定水平 将氧化物高温超导体的原料填充到金属护套中后的护套。 在将热处理温度保持在一定水平之后，将金属护套再次加热至目标温度。 优选地，热处理温度保持在至少500℃且不超过750℃的范围内选择的水平。

    Method of preparing oxide high-temperature
    10.
    发明授权
    Method of preparing oxide high-temperature 失效
    氧化物高温制备方法

    公开(公告)号：US5378684A

    公开(公告)日：1995-01-03

    申请号：US757103

    申请日：1991-09-10

    申请人： Takeshi Hikata ,  Kenichi Sato

    发明人： Takeshi Hikata ,  Kenichi Sato

    IPC分类号： C04B35/00 ,  C01G1/00 ,  C04B35/45 ,  H01B12/04 ,  H01B13/00 ,  H01L39/24

    CPC分类号： H01L39/248 ,  Y10T29/49014

    摘要： In order to prevent expansion of a metal sheath which is heat treated in order to form an oxide high-temperature superconductor therein, the heat treatment temperature is held at a certain level in an intermediate stage of temperature rising in a step of heat treating the metal sheath after filling raw material for an oxide high-temperature superconductor into the metal sheath. After the heat treatment temperature is thus held at the certain level, the metal sheath is again heated to a target temperature. Preferably, the heat treatment temperature is held at a level which is selected in a range of at least 500.degree. C. and not more than 750.degree. C.

    摘要翻译： 为了防止热处理以在其中形成氧化物高温超导体的金属护套的膨胀，热处理温度在热处理金属的步骤的中间阶段保持在一定水平 将氧化物高温超导体的原料填充到金属护套中后的护套。 在将热处理温度保持在一定水平之后，将金属护套再次加热至目标温度。 优选地，热处理温度保持在至少500℃且不超过750℃的范围内选择的水平。