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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
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。
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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
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。
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公开(公告)号：US5902774A
公开(公告)日：1999-05-11
申请号：US955322
申请日：1997-10-20
申请人： Koji Muranaka , Kenichi Sato , Takeshi Hikata
发明人： Koji Muranaka , Kenichi Sato , Takeshi Hikata
IPC分类号： H01L39/24
CPC分类号： H01L39/248 , Y10T29/49014 , Y10T29/4981
摘要： A method of producing a tape-shaped superconducting wire is provided. The wire maintains a high critical temperature and a high critical current density along the overall length thereof. In this method, raw material powder for the oxide superconductor is first charged in a silver sheath and the sheath charged with the powder is subjected to plastic working to prepare a first flat type wire. On the other hand, a second wire consisting of a tape wire formed by coating a surface of a flat type wire having at least an outer surface consisting essentially of silver or a silver alloy with a metal oxide or ceramics, or a tape wire containing ceramics fibers and a binder dissipated by heat treatment is prepared. The first and second wires are layered with each other, and tightly wound in a pancake coil shape. The wires wound in the pancake coil shape are heat treated for sintering the oxide superconductor. After the heat treatment, the first wire is separated from the second wire.
摘要翻译： 提供了一种制造带状超导线材的方法。 导线沿其整个长度保持高临界温度和高临界电流密度。 在该方法中，将首先将氧化物超导体的原料粉末装入银护套中，并对装有粉末的护套进行塑性加工以制备第一扁平型线。 另一方面，一种第二线，其由通过将至少具有由银或银合金构成的外表面与金属氧化物或陶瓷至少包覆的扁平线的表面形成的带状线或者包含陶瓷的带状线 制备通过热处理消散的纤维和粘合剂。 第一和第二线彼此层叠，并且以扁平线圈形状紧密缠绕。 以扁平线圈形状缠绕的线被热处理以烧结氧化物超导体。 在热处理之后，第一线与第二线分离。
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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
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。
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公开(公告)号：US5434130A
公开(公告)日：1995-07-18
申请号：US186219
申请日：1994-01-25
申请人： Takeshi Hikata , Kenichi Sato
发明人： Takeshi Hikata , Kenichi Sato
IPC分类号： B21F19/00 , B21B1/16 , B21B1/38 , B21B3/00 , B21B27/00 , B21B27/10 , B21B45/00 , B23K20/00 , C04B35/45 , C22C29/12 , H01B12/04 , H01B13/00 , H01L39/24
CPC分类号： B21B27/10 , B21B1/16 , B21B45/002 , B23K20/002 , C04B35/4521 , C04B35/4525 , C22C29/12 , H01L39/248 , B21B2001/383 , B21B27/005 , B21B3/00 , Y10T29/49014
摘要： In a method of preparing an oxide superconducting wire comprising the steps of filling up raw material powder for an oxide superconductor in a metal sheath and rolling the same in this state, frictional force on surfaces of rolls employed for rolling is increased in the rolling step in order to improve denseness of the raw material powder, thereby improving the critical current density of the oxide superconducting wire. In order to increase the frictional force, films having large frictional force are formed on the roll surfaces, a coating material is applied to the roll surfaces during rolling, or the roll surfaces are roughened, for example.
摘要翻译： 在制备氧化物超导线材的方法中，包括以下步骤：在该状态下填充金属护套中的氧化物超导体的原料粉末并在该状态下对其进行轧制，在轧制步骤中，用于轧制的轧辊表面上的摩擦力增加 以改善原料粉末的致密性，从而提高氧化物超导线材的临界电流密度。 为了增加摩擦力，在辊面上形成具有大摩擦力的膜，例如在轧制过程中将涂料施加到辊表面，或者辊表面粗糙化。
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公开(公告)号：US5288699A
公开(公告)日：1994-02-22
申请号：US960307
申请日：1992-10-13
申请人： Kenichi Sato , Takeshi Hikata
发明人： Kenichi Sato , Takeshi Hikata
IPC分类号： H01L39/24
CPC分类号： H01L39/248 , Y10S505/928 , Y10S505/93 , Y10T29/49014
摘要： In a method of manufacturing an oxide superconducting wire including steps of performing heat treatment and deformation processing in a state of filling up a metal sheath with powder of an oxide superconductor or raw material therefor, fine particles or gas adsorbed by the powder can be desorbed by heating the powder at least once preferably under decompression in a stage before final sintering of the powder. It is possible to further withdraw the adsorbed fine particles or gas by heating the powder under decompression at least once before the same is covered with the sheath, covering the powder with the sheath, deforming the sheath and again heating the same under decompression, for example. Thus, it is possible to prevent gas generation from the powder during heat treatment for further growing superconductive particles, thereby preventing the superconducting wire from inflation etc. caused by such gas generation.
摘要翻译： 在制造氧化物超导线的方法中，包括在用氧化物超导体或其原料的粉末填充金属护套的状态下进行热处理和变形处理的步骤，由粉末吸附的细颗粒或气体可以被 在粉末的最终烧结之前的阶段中，优选在减压下至少一次加热粉末。 可以通过将减压下的粉末加热至少一次，同时被护套覆盖，用护套覆盖粉末，使护套变形并且在减压下再次加热，从而进一步退出吸附的微粒或气体，例如 。 因此，可以防止在热处理期间从粉末中产生气体以进一步生长超导颗粒，从而防止由这种气体产生引起的超导线材的充气等。
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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
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。
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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。
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公开(公告)号：US5910222A
公开(公告)日：1999-06-08
申请号：US858842
申请日：1997-05-19
申请人： Kenichi Sato , Takeshi Hikata
发明人： Kenichi Sato , Takeshi Hikata
CPC分类号： H01L39/143 , H01L39/126 , H01L39/248 , Y10S428/93 , Y10S505/701 , Y10S505/704
摘要： In a bismuth oxide superconductor having a composition of Bi--Sr--Ca--Cu or (Bi,Pb)--Sr--Ca--Cu and being covered with a metal sheath, the a-b plane of a 2223 phase, which is a 110 K phase, is oriented along the longitudinal direction as a matrix, while a dispersed superconducting phase mainly consisting of a 2212 phase, which is a 80 K phase, and/or non-superconducting phases is dispersed along the a-b plane in the 2223 phase, so that a magnetic field property of its critical current density is extremely improved. In order to prepare such a bismuth oxide superconductor, performed are the steps of preparing raw material which is based on a 2223 composition in. Bi--Sr--Ca--Cu or (Bi,Pb)--Sr--Ca--Cu in relation to blending/composition, consisting as a superconducting phase of mainly a 2212 phase and non-superconducting phases in relation to the crystal structure, covering the raw material with a metal sheath, and performing deformation processing and heat treatment on the composite.
摘要翻译： 在具有Bi-Sr-Ca-Cu或（Bi，Pb）-Sr-Ca-Cu组成并被金属护套覆盖的氧化铋超导体中，2223相的ab平面为110K相 沿纵向取向为矩阵，而主要由2212相组成的分散的超导相（其为80K相和/或非超导相）沿着2223相的ab平面分散，使得 其临界电流密度的磁场特性极大地改善。 为了制备这种氧化铋超导体，进行以Bi-Sr-Ca-Cu或（Bi，Pb）-Sr-Ca-Cu为基础的2223组成相对于共混物的原料的制备工序 组成，主要包括相对于晶体结构的2212相和非超导相的超导相，用金属护套覆盖原材料，并对复合材料进行变形加工和热处理。
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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
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。
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