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1. 发明专利

JP2004273246A Oxide superconductor wire and substrate therefor 审中-公开
公开(公告)号：JP2004273246A
公开(公告)日：2004-09-30
申请号：JP2003061668
申请日：2003-03-07
申请人： Internatl Superconductivity Technology Center , Toshiba Corp , 株式会社東芝 , 財団法人国際超電導産業技術研究センター
发明人： YOSHINO HISASHI , YAMAZAKI MUTSUKI , HARINIWA KIYOSHI
IPC分类号： C30B29/22 , C23C14/08 , H01B12/06 , H01B13/00
CPC分类号： Y02E40/642
摘要： PROBLEM TO BE SOLVED: To provide a substrate for oxide superconductor wire in which a surface (110) most appropriate for deposition of the oxide superconductor is presented as an aggregated structure, and to provide an oxide superconductor wire displaying high critical current density. SOLUTION: In the oxide superconductor wire, the oxide superconductor is deposited on the substrate for the oxide superconductor provided with Ni-Cr alloy containing 10 atomic% or more and 50 atomic% or less of Cr and Ag-Cu alloy containing 0.01 atomic% or more; and 0.5 atomic% or less of Cu, covering at least a part of the Ni-Cr alloy and its surface forming a crystalline orientation on the Ag (110) surface. COPYRIGHT: (C)2004,JPO&NCIPI

2. 发明专利

JPH1186923A CONNECTION DEVICE AND SUPERCONDUCTING MAGNET 失效
公开(公告)号：JPH1186923A
公开(公告)日：1999-03-30
申请号：JP24884697
申请日：1997-09-12
申请人： TOSHIBA CORP
发明人： YAMAZAKI MUTSUKI , YOSHINO HISASHI , KUBOTA HIROSHI , KUDO YUKI
IPC分类号： H01R4/68 , H01F6/00
摘要： PROBLEM TO BE SOLVED: To reduce the thermal conductivity of a connection device connecting nonsuperconductor wiring to superconductor wiring, and increase the current capacity. SOLUTION: A substrate 11, an oxide superconductor layer 12 which is installed on both sides of the substrate 11 and composed of, for example, Y1 Ba2 Cu3 O7- X, etc., and a first connecting terminal 13a and a second connecting terminal 13b arranged on a first region 12a and a second region 12b of the oxide superconductor layer 12 respectively, are provided. A superconductor layer 12 may be installed on both sides of the substrate 11. Using the constitution can reduce the heat invasion by the substrate 11 and increase the current capacity.

3. 发明专利

JPH1088330A FILM FORMATION 失效
公开(公告)号：JPH1088330A
公开(公告)日：1998-04-07
申请号：JP24532496
申请日：1996-09-17
申请人： TOSHIBA CORP
发明人： KUDO YUKI , YAMAZAKI MUTSUKI , YOSHINO HISASHI
IPC分类号： C23C14/28
摘要： PROBLEM TO BE SOLVED: To provide a film formation method capable of forming thin films having desired compsns. stably over a long period of time without degrading the utilization efficiently of a target and without using an aperture. SOLUTION: This film formation method consists in executing sputtering by irradiating a target 16 consisting of >=2 kinds of elements which are arranged to face a substrate 27 and vary in vapor pressures or m. p. while moving this target. In such case, a laser beam 24 having a first region having the fluence above the threshold value to evaporate all the elements of the target on the irradiation surface and a second region having the fluence below the threshold value is used. A stage of executing the sputtering by irradiating the target with this laser beam, then moving the target and irradiating the target with the laser beam in such a manner that the first region having the fluence above the threshold value overlaps on the region where the element of the higher vapor pressure or lower m. p. among the irradiation surfaces in the stage described above is repeated.

4. 发明专利

JPH05174646A MANUFACTURE OF OXIDE SUPERCONDUCTOR 失效
公开(公告)号：JPH05174646A
公开(公告)日：1993-07-13
申请号：JP34298991
申请日：1991-12-25
申请人： TOSHIBA CORP
发明人： KATO MANABU , NOMURA SHIYUNJI , YOSHINO HISASHI
IPC分类号： C01G1/00 , C04B35/00 , C04B35/45 , H01B12/04 , H01B13/00
摘要： PURPOSE:To realize an excellent superconductive characteristic in preferable reproducibility by reducing a residual carbon amount, and enhancing density of a superconductor. CONSTITUTION:Compounds not incorporating carbon, e.g. salt not including carbon such as nitrate and sulfate, halide, oxide and the like are used as starting materials including metal elements composing an oxide superconductor. The starting materials are mixed in a predetermined composition ratio, thus preparing material mixture powder. Calcination is applied to the material mixture powder as required, to mold it into a desired shape, followed by a heat treatment. Consequently, it is possible to obtain an oxide superconductor having a residual carbon amount of 0.03% or lower by weight.

5. 发明专利

JPH04192217A SUPERCONDUCTIVE MEMBER 失效
公开(公告)号：JPH04192217A
公开(公告)日：1992-07-10
申请号：JP32185590
申请日：1990-11-26
申请人： TOSHIBA CORP
发明人： YOSHINO HISASHI , YAMAZAKI MUTSUKI , FUKUYA HIROYUKI , KATO MANABU
IPC分类号： H01B12/06
摘要： PURPOSE:To obtain a member, of which lowering of critical current density is small even at a liquid nitrogen temperature, by forming no-superconductive phase in dispersion under the specified condition. CONSTITUTION:No superconductive phase parts caused by radiation of energy beam and having a diameter less than 3mum are arranged in dispersion at spaces less than 10mum to form an oxide superconductive member. These no- superconductive phase parts have an appropriate sizes and the appropriate distribution condition to function effectively as the pinning center of a quantum magnetic flux under the condition cooled to a liquid nitrogen temperature. Consequently, lowering of superconductivity such as a critical current density or the like to be caused by application of the magnetic field can be restricted.

6. 发明专利

JPH02260614A SUPERCONDUCTING COIL 失效
公开(公告)号：JPH02260614A
公开(公告)日：1990-10-23
申请号：JP8194989
申请日：1989-03-31
申请人： TOSHIBA CORP
发明人： YOSHINO HISASHI , YAMAZAKI MUTSUKI
IPC分类号： H01F6/06 , H01B12/04
摘要： PURPOSE:To maintain high critical current density, and to improve various kinds of characteristics of a superconducting coil by a method wherein the forming position of an oxide superconducting layer is made to eccentric toward the inside of the radial direction of the winding body within the cross section in radial direction of a superconducting wire material. CONSTITUTION:A superconducting oxide layer 3 is buried in a silver tape-like substrate 2 along the longitudinal direction on a super-conducting wire material 1, said superconducting layer 3 is formed eccentrically from the center of the rectangular cross section of the substrate 2. A superconducting coil is constituted by winding the eccentric superconducting layer 3 around a winding jig 4 in such a manner that the layer 3 is positioned inside the jig. As the core constituted as above has the superconducting layer 3 of the wire material 1 wound thereon so that the layer 3 will be positioned inside the radial direction of the wound body, compressive stress is mainly added to the superconducting layer 3, and the generation of cracks caused by tensile stress can be suppressed. As a result, the amount of distortion can be reduced, and the lowering of the critical current density when a coil is formed can also be prevented.

7. 发明专利

JPH01282187A PRODUCTION OF SINGLE CRYSTAL OF OXIDE SEMICONDUCTOR 失效
公开(公告)号：JPH01282187A
公开(公告)日：1989-11-14
申请号：JP11054688
申请日：1988-05-09
申请人： TOSHIBA CORP
发明人： NOMURA SHIYUNJI , YOSHINO HISASHI , ANDO TAKESHI , KASAMI AKINOBU
IPC分类号： H01L39/24 , C30B19/02 , C30B29/22 , H01B12/00 , H01B13/00
摘要： PURPOSE:To obtain a thin film-shaped high-quality oxide superconductor by growing a single crystal from a melt consisting of Bi2O3 and CuO by epitaxial growth. CONSTITUTION:A melt consisting of Bi2O and CuO is prepd. A single crystal of an oxide superconductor is grown from the melt by liq. phase epitaxial growth. A large-sized high-quality single crystal is obtd. and especially a thin film-shaped high-quality oxide superconductor is obtd.

8. 发明专利

JPH01157453A PRODUCTION OF OXIDE SUPERCONDUCTOR 失效
公开(公告)号：JPH01157453A
公开(公告)日：1989-06-20
申请号：JP31436487
申请日：1987-12-11
申请人： TOSHIBA CORP
发明人： NOMURA SHIYUNJI , YOSHINO HISASHI , ANDO TAKESHI
IPC分类号： C30B11/02 , C01G1/00 , C04B35/00 , C04B35/45 , C30B29/22 , H01B13/00 , H01L39/24
摘要： PURPOSE:To produce an oxide superconductor having high orientation of C face of a single crystal and crystals by molding a powder of the oxide superconductor to a specified shape and sintering at a specified temp. CONSTITUTION:After crystallizing a powder mixture of constituting elements such as Y, Ba, Cu, etc., by precalcining at 800-980 deg.C, an oxide superconductor expressed by the formula and having an oxygen deficient perovskite structure (wherein Ln is at least one kind of element selected from rare earth elements; M is at least one king of element selected from alkaline earth elements; deltais a number of deficient oxygen atom) is obtd. by heat-treating the crystallized product at 300-700 deg.C, if necessary, in O2-contg. atmosphere. Obtd. oxide superconductor is pulverized to powder having 0.2-20mum mean particle size. Then, BaCuO2 powder is added to the above described powder in accordance with demand so as to satisfy the conditions defined by formula II (wherein x is 0.01-0.3), and the mixture is molded to a product having a desired shape. If necessary, at least one kind of seed crystal selected from SrTiO3, compds. expressed by formula III (M is Al, Ge, Fe), compds. expressed by formula IV, MgO, and ZrO2, is buried in the molded body and sintered at 950-1050 deg.C for 10-100hr. Thus, the crystal growth of the oxide superconductor is caused.

9. 发明专利

JPH01157451A PRODUCTION OF OXIDE SUPERCONDUCTING SINTERED BODY 失效
公开(公告)号：JPH01157451A
公开(公告)日：1989-06-20
申请号：JP31436287
申请日：1987-12-11
申请人： TOSHIBA CORP
发明人： NOMURA SHIYUNJI , YOSHINO HISASHI , ANDO TAKESHI
IPC分类号： H01L39/24 , C01G1/00 , C04B35/00 , C04B35/45 , H01B13/00
摘要： PURPOSE:To produce the title sintered body having high critical current density and consisting of crystal particles oriented in almost a fixed direction by molding powdery oxide superconductor to a desired shape and sintering under a special condition. CONSTITUTION:A powder mixture consisting of constituting elements such as Y, Ba, Cu, etc., is annealed at 300-700 deg.C in an atmosphere permitting supply of sufficient amt. of oxygen after it is calcined at 900-1050 deg.C to obtain thus an oxide superconductor having an oxygen deficient perovskite structure expressed by the formula(wherein Ln is at least one kind of rare earth elements; deltais a number of deficient oxygen atom). Then, the powder of the superconductor or the powder mixture which forms the oxide superconductor by heating is molded to a desired shape, and preheated at a temp. lower by 400-200 deg.C than a sintering temp. at =10 deg.C/min temp. elevating rate by a local heating. The product is then cooled slowly after it has been kept at the temp. for a specified time.

10. 发明专利

JPH01154409A MANUFACTURE OF SUPERCONDUCTOR WIRE MATERIAL 失效
公开(公告)号：JPH01154409A
公开(公告)日：1989-06-16
申请号：JP31289187
申请日：1987-12-10
申请人： TOSHIBA CORP
发明人： ANDO TAKESHI , YOSHINO HISASHI
IPC分类号： B28B1/00 , C01G1/00 , C04B35/45 , H01B12/04 , H01B13/00
摘要： PURPOSE:To improve the superconductive property and the density by carrying out a hot wiredrawing process in the temperature condition at 500 deg.C to 900 deg.C. CONSTITUTION:The powder or the sinter of an oxide superconductor is filled in a metal tube, and a hot wiredrawing process in the temperature condition at 500 deg.C to 900 deg.C is applied to the metal tube as it is or after a heat treatment is once applied. As the superconductor, is available a perovskite structure of oxide superconductor including a rare earth element which is used in a high practical effect and realizes a superconductive condition. An oxide with a perovskite structure in a broad sense such as a defective perovskite type with an oxygen defection such as LnBa2Cu3O7-delta system (delta shows the oxygen detection normally less than 1, Ln is at least one or more selected from rare earth elements such as Y, La, and Sc; and Ba can be replaced by Ca or the like partially), a layer-form perovskite type such as Sr-La-Cu-O system, or the like can be given as an example. In this case, the rare earth elements are in the broad difinition including Sc, Y, and La system. In such a composition, the superconductive property and the density can be improved.

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