公开(公告)号：US07091423B2

公开(公告)日：2006-08-15

申请号：US10819113

申请日：2004-04-07

申请人： Hiroyasu Yumura ,  Naoki Ayai

发明人： Hiroyasu Yumura ,  Naoki Ayai

IPC分类号： H01B12/00

CPC分类号： H01B12/06 ,  H01B7/30 ,  Y02E40/642 ,  Y10T29/49014

摘要： A superconducting cable has a plurality of superconducting wires wound around a core material (former) in a multilayered manner. The superconducting wires employ a twisted filament type superconducting wire having spiral superconducting filaments and an untwisted filament type superconducting wire having straight superconducting filaments. The layer in which an applied magnetic field is large and of which the low loss effect is expected is formed of twisted filament type superconducting wires, and the other layers are formed using the untwisted filament type superconducting wires; thus the AC loss can be reduced effectively. Thus, in the superconducting cable, the AC loss can be effectively reduced while a degradation of the current characteristics and the increase of cost are suppressed.

摘要翻译： 超导电缆具有以多层方式缠绕在芯材（前者）周围的多根超导线。 超导线使用具有螺旋超导细丝的扭绞长丝型超导线和具有直的超导细丝的未绞合的长丝型超导线。 施加的磁场较大并且预期的低损耗效应的层由绞合的长丝型超导线形成，并且其它层使用未绞合的长丝型超导线形成; 从而有效降低交流损耗。 因此，在超导电缆中，可以有效地降低AC损耗，同时抑制电流特性的劣化和成本的增加。

公开(公告)号：US20080020936A1

公开(公告)日：2008-01-24

申请号：US11579583

申请日：2006-01-30

申请人： Naoki Ayai

发明人： Naoki Ayai

IPC分类号： H01L39/24

CPC分类号： H01L39/248 ,  C01G1/00 ,  C01G1/02 ,  C01G3/006 ,  C04B35/4525 ,  C04B35/6267 ,  C04B35/6268 ,  C04B2235/3208 ,  C04B2235/3213 ,  C04B2235/443 ,  C04B2235/6567 ,  C04B2235/661 ,  H01L39/2477 ,  Y10T29/49014

摘要： A method of producing a material of an oxide superconductor comprises the following steps: (a) in a solution, ionizing a material containing an atom for constituting the oxide superconductor, (b) by removing a solvent by spraying the solution in a first atmosphere, producing a material powder containing the atom for constituting the oxide superconductor, and (c) cooling the material powder in a second atmosphere into which a cooling gas is introduced. In this method, the concentration of carbon dioxide in the second atmosphere is lower than that in the first atmosphere, which contains the removed solvent component. The concentration of nitrogen oxide in the second atmosphere is lower than that in the first atmosphere, which contains the removed solvent component. The concentration of water vapor in the second atmosphere is lower than that in the first atmosphere, which contains the removed solvent component. These specifications enable the method to increase the density and purity of the oxide superconductor.

摘要翻译： 制造氧化物超导体的材料的方法包括以下步骤：（a）在溶液中电离含有用于构成氧化物超导体的原子的材料，（b）通过在第一气氛中喷雾溶液除去溶剂， 制造含有构成氧化物超导体的原子的材料粉末，以及（c）在引入冷却气体的第二气氛中冷却材料粉末。 在该方法中，第二气氛中的二氧化碳浓度低于含有除去的溶剂成分的第一气氛中的二氧化碳浓度。 第二气氛中的氮氧化物浓度低于含有去除的溶剂成分的第一气氛中的浓度。 第二气氛中的水蒸气浓度低于含有去除的溶剂成分的第一气氛中的浓度。 这些规范使得该方法能够增加氧化物超导体的密度和纯度。

公开(公告)号：US07162287B2

公开(公告)日：2007-01-09

申请号：US10749574

申请日：2003-12-31

申请人： Naoki Ayai

发明人： Naoki Ayai

IPC分类号： H01B12/00 ,  H01F6/00 ,  H01L39/00 ,  H01L39/24

CPC分类号： H01L39/248 ,  H01L39/143

摘要： This invention relates to an oxide superconducting wire comprising oxide superconducting filaments, a high-density ceramic layer uniformly surrounding each of the filaments, and a silver sheath that directly covers the ceramic layer. The ceramic layer becomes non-superconducting when the filaments are cooled to an operating temperature of oxide superconductors. The oxide superconductors can be isolated by the ceramic that acts as a highly resistive material or an insulator. A high normal resistance is achieved, and thereby AC loss is reduced remarkably.

摘要翻译： 本发明涉及包含氧化物超导细丝的氧化物超导线，均匀围绕每根长丝的高密度陶瓷层和直接覆盖陶瓷层的银护套。 当长丝冷却至氧化物超导体的工作温度时，陶瓷层变成非超导体。 氧化物超导体可以通过用作高电阻材料或绝缘体的陶瓷隔离。 实现了高正常电阻，从而显着降低了AC损耗。

公开(公告)号：US08238991B2

公开(公告)日：2012-08-07

申请号：US13057854

申请日：2009-04-22

申请人： Naoki Ayai

发明人： Naoki Ayai

IPC分类号： H01L39/14

CPC分类号： H01L39/248 ,  Y10T29/49014

摘要： A precursor wire of an oxide superconducting wire includes a first sheath made of silver or silver alloy, a center portion in the first sheath, and a plurality of peripheral segments placed close to one another at the inside of the first sheath so as to surround the center portion. Each of the peripheral segments is formed as a monofilamentary segment that has an arch-shaped cross section and that includes a ribbon-shaped filament made of a precursor of an oxide superconductor and covered with a second sheath made of silver or silver alloy. The multiple peripheral segments are placed in a multilayer state in the form of concentric circles such that wide-width surfaces of the peripheral segments surround the center portion.

摘要翻译： 氧化物超导线的母体线包括由银或银合金制成的第一护套，第一护套中的中心部分和在第一护套的内部彼此靠近放置的多个外围段，以围绕第 中心部分。 每个周边部分形成为具有拱形横截面的单丝段，并且包括由氧化物超导体的前体制成并且被银或银合金制成的第二护套覆盖的带状细丝。 多个外围段以同心圆的形式放置在多层状态中，使得周边段的宽宽度表面围绕中心部分。

公开(公告)号：US20100075857A1

公开(公告)日：2010-03-25

申请号：US12445145

申请日：2008-05-08

申请人： Naoki Ayai

发明人： Naoki Ayai

IPC分类号： H01B12/06 ,  H01L39/24

CPC分类号： H01L39/143 ,  H01L39/248

摘要： The invention offers a superconducting tape that maintains both high allowable tension and low splice resistance and a method of producing the superconducting tape. The superconducting tape is provided with a main-body portion and a reinforcement portion. The main-body portion has the shape of a tape and has a superconductor. The reinforcement portion is composed of precipitation-hardened-type copper alloy or alloy of tin and copper and is formed on at least one surface side of the main-body portion.

摘要翻译： 本发明提供一种维持高容许张力和低接合电阻的超导带以及制造超导带的方法。 超导带设置有主体部分和加强部分。 主体部分具有带状并具有超导体。 加强部由沉淀硬化型铜合金或锡和铜的合金构成，形成在主体部的至少一个表面侧。

公开(公告)号：US20060228548A1

公开(公告)日：2006-10-12

申请号：US11449939

申请日：2006-06-09

申请人： Naoki Ayai ,  Ryosuke Hata ,  Hiromi Takei ,  Kazuhiko Hayashi ,  Takeshi Hikata

发明人： Naoki Ayai ,  Ryosuke Hata ,  Hiromi Takei ,  Kazuhiko Hayashi ,  Takeshi Hikata

IPC分类号： D02G3/40 ,  B32B23/02 ,  B32B27/02

CPC分类号： H01R4/68 ,  H01F6/06 ,  H01L39/02 ,  Y10T428/2922 ,  Y10T428/2924 ,  Y10T428/2929 ,  Y10T428/2931 ,  Y10T428/2933 ,  Y10T428/2973 ,  Y10T428/2991

摘要： A method of manufacturing an oxide superconducting wire which can manufacture the longest possible wire by connecting relatively short wires with each other and is capable of suppressing reduction of a critical current resulting from influence by strain when the wires connected with each other are bent, an oxide superconducting wire, a superconducting coil and a superconducting apparatus are provided. According to the method of manufacturing an oxide superconducting wire by superposing end portions of two oxide superconducting wires with each other thereby bonding the end portions and connecting the oxide superconducting wires with each other, a junction formed by superposing the end portions with each other is so worked as to reduce the quantity of strain on an end of the junction when the two oxide superconducting wires and connected with each other are bent. Each of the oxide superconducting wire, the superconducting coil and the superconducting apparatus has the aforementioned junction, and the quantity of strain on the end of the junction is reduced in the aforementioned manner.

公开(公告)号：US20050278939A1

公开(公告)日：2005-12-22

申请号：US10531703

申请日：2004-06-14

申请人： Naoki Ayai

发明人： Naoki Ayai

IPC分类号： H01L39/24 ,  H01B1/00

CPC分类号： C04B35/453 ,  C04B35/4525 ,  C04B2235/3208 ,  C04B2235/3213 ,  C04B2235/3281 ,  C04B2235/3296 ,  C04B2235/3298 ,  H01L39/248 ,  Y10T29/49014

摘要： The present invention provides a method of manufacturing a bismuth based oxide superconducting wire, comprising steps of preparing a raw material powder, and subjecting the raw material powder to plastic working and heat treatment; wherein the raw material powder contains the superconducting phases containing Bi, Pb, Sr, Ca, Cu, and O in a composition ratio of approximately 2:2:1:2 (Bi+Pb):Sr:Ca:Cu, and the non-superconducting phases containing Pb; wherein the composition ratio (Bi+Pb):Sr:Ca:Cu of the raw material powder is approximately 2:2:2:3; and wherein the ratio of the non-superconducting phases to the superconducting phases is 5 wt % or less; or wherein the raw material powder contains orthorhombic superconducting phases containing Bi, Pb, Sr, Ca, Cu, and 0 in a composition ratio of approximately 2:2:1:2 (Bi+Pb):Sr:Ca:Cu; and wherein the composition ratio (Bi+Pb):Sr:Ca:Cu of the raw material powder is approximately 2:2:2:3.

摘要翻译： 本发明提供一种制造铋基氧化物超导线的方法，包括制备原料粉末，并对原料粉末进行塑性加工和热处理的步骤; 其中所述原料粉末包含组成比为约2：2：1：2（Bi + Pb）：Sr：Ca：Cu的Bi，Pb，Sr，Ca，Cu和O的超导相， 含Pb的超导相; 其中原料粉末的组成比（Bi + Pb）：Sr：Ca：Cu为约2：2：2：3; 并且其中所述非超导相与所述超导相的比率为5重量％以下; 或其中所述原料粉末包含组成比为约2:2:1:2（Bi + Pb）：Sr:Ca:Cu的Bi，Pb，Sr，Ca，Cu和0的斜方晶超导相; 原料粉末的组成比（Bi + Pb）：Sr：Ca：Cu为约2：2：2：3。

公开(公告)号：US06555504B1

公开(公告)日：2003-04-29

申请号：US09673256

申请日：2000-10-25

申请人： Naoki Ayai ,  Nobuhiro Saga ,  Kazuhiko Hayashi

发明人： Naoki Ayai ,  Nobuhiro Saga ,  Kazuhiko Hayashi

IPC分类号： H01L3924

CPC分类号： H01L39/248 ,  H01B12/10 ,  H01F2027/2819 ,  H01L39/143 ,  Y02E40/644

摘要： An oxide superconducting wire includes oxide superconducting filaments 1, a matrix 2, a covering layer 3, and an insulating layer 4. The matrix 2 is placed so as to enclose the oxide superconducting filaments 1 and is made of silver. The covering layer 3 is placed so as to enclose the matrix 2, contains silver and manganese, and has a thickness of 10 &mgr;m to 50 &mgr;m. The insulating layer 4 is placed so as to enclose the covering layer 3.

摘要翻译： 氧化物超导线包括氧化物超导细丝1，基体2，覆盖层3和绝缘层4.基体2被放置成包围氧化物超导细丝1并由银制成。 将覆盖层3放置成包围基体2，包含银和锰，并且具有10μm〜50μm的厚度。 绝缘层4被放置成包围覆盖层3。

公开(公告)号：US20090018023A1

公开(公告)日：2009-01-15

申请号：US11664945

申请日：2006-03-09

申请人： Naoki Ayai

发明人： Naoki Ayai

IPC分类号： H01B12/00 ,  H01L39/24

CPC分类号： H01L39/248 ,  C01G29/006 ,  C01P2004/62 ,  C01P2006/40 ,  Y10T29/49014

摘要： An object of the present invention is to provide a method of manufacturing a bismuth-based oxide superconductor capable of obtaining a high critical current density and a superconducting wire containing a bismuth-based oxide superconductor manufactured by this method.The present invention is directed to a method of manufacturing a bismuth-based oxide superconductor containing a 2223 phase having a 2223 composition in a composition Bi—Sr—Ca—Cu or (Bi,Pb)—Sr—Ca—Cu, comprising a first step of charging a raw material containing a 2212 phase having a 2212 composition in a composition Bi—Sr—Ca—Cu or (Bi,Pb)—Sr—Ca—Cu with a critical temperature of not more than 70 K into a metal sheath, a second step of performing plastic working on the metal sheath charged with the raw material and a third step of performing heat treatment on the metal sheath charged with the raw material.

摘要翻译： 本发明的目的是提供一种能够获得高临界电流密度的铋基氧化物超导体的制造方法和含有通过该方法制造的铋基氧化物超导体的超导线。 本发明涉及一种制备Bi-Sr-Ca-Cu或（Bi，Pb）-Sr-Ca-Cu组合物中含有2223组成的2223相的铋基氧化物超导体的方法，其包括第一 在临时温度不超过70K的组成Bi-Sr-Ca-Cu或（Bi，Pb）-Sr-Ca-Cu中将含有2212组成的2212相的原料装入金属鞘中的步骤 第二步，在装有原料的金属鞘上进行塑性加工，第三步是对装有原料的金属鞘进行热处理。

公开(公告)号：US07293343B2

公开(公告)日：2007-11-13

申请号：US10510349

申请日：2003-07-30

申请人： Naoki Ayai

发明人： Naoki Ayai

IPC分类号： H01L39/24

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

摘要： A method of manufacturing a superconducting wire is provided. The method is provided with the steps of filling a raw material powder in a metal pipe, the raw material powder being composed of an oxide superconductor or a precursor to become an oxide superconductor through heat treatment; heating the metal pipe filled with the above-described raw material powder to 400° C. or more and 800° C. or less; depressurizing the inside of the above-described heated metal pipe to 100 Pa or less; sealing an opening at an end portion of the metal pipe under the above-described depressurized condition; and subjecting the sealed metal pipe containing the above-described raw material powder to wire drawing, wherein the packing density of the above-described raw material powder is controlled at 10 percent or more and 40 percent or less and, thereby, the degasification of the inside of the metal pipe is adequately performed, so that the critical current density can be increased.

摘要翻译： 提供一种制造超导线的方法。 该方法具有以下步骤：将原料粉末填充在金属管中，原料粉末由氧化物超导体或前体组成，通过热处理成为氧化物超导体; 将填充有上述原料粉末的金属管加热至400℃以上且800℃以下; 将上述加热的金属管的内部减压至100Pa以下; 在上述减压条件下密封在金属管的端部处的开口; 对含有上述原料粉末的密封金属管进行拉丝，其中将上述原料粉末的包装密度控制在10％以上40％以下，由此， 金属管的内部被充分地进行，从而能够提高临界电流密度。