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41. 发明专利

JPH04342911A MANUFACTURE OF TAPE-LIKE CERAMIC SUPERCONDUCTIVE CONDUCTOR 失效
公开(公告)号：JPH04342911A
公开(公告)日：1992-11-30
申请号：JP14562491
申请日：1991-05-21
申请人： FURUKAWA ELECTRIC CO LTD
发明人： KIKUCHI SUKEYUKI , MIMURA MASANAO , NEMOTO KIYOSHI , TANAKA YASUZO
IPC分类号： B21F19/00 , H01B12/04 , H01B13/00
摘要： PURPOSE:To provide a ceramic superconductive conductor excellent in a superconductive characteristics such as Jc and the like. CONSTITUTION:Upon the degressive forming of a tape-like composite wire rod 3, in which raw materials to be formed into a ceramic superconductive conductor is covered with a metallic material, is performed by an uniaxial depressing method such as a pressing method, a roll rolling method, etc., a degressive forming jig, such that it is formed in a convex-like shape having a predetermined curvature in the width direction, is used as at least one degressive forming jig, for example at the work surfaces of the pressurizing plates 1 in contact with the tape-like composite wire rod 3. Since degressive forming jigs with convex work surfaces are used, depressing forces are sufficiently exerted at the central portions at which the raw material substance layer 4 in the tape-like composite wire rod 3 is compisited, so that the resulting ceramic superconductive conductor has high density ceramic superconductive layers and excellent C-axis orientation, therefore excellent superconductive characteristics such as Jc or otherwise can be provided.

42. 发明专利

JPH04317416A PRODUCTION OF BI-BASED OXIDE SUPERCONDUCTOR 失效
公开(公告)号：JPH04317416A
公开(公告)日：1992-11-09
申请号：JP10669591
申请日：1991-04-11
申请人： FURUKAWA ELECTRIC CO LTD
发明人： MIMURA MASANAO , KIKUCHI SUKEYUKI , NEMOTO KIYOSHI
IPC分类号： C01G1/00 , C01G29/00 , C04B35/00 , C04B35/45 , H01B12/00 , H01B13/00
摘要： PURPOSE:To produce a Bi-based oxide superconductor free from a coarse foreign phase and excellent in superconductivity such as Jc. CONSTITUTION:The raw material A consisting essentially of a Bi2Sr2Ca2Cu3Ox phase ((2223) phase) and the raw material B consisting essentially of a Bi2Sr2 Ca1Cu2Ox phase ((2212) phase) are mixed so that the mixture contains 5-95wt.% of the (2223) phase. The mixture is formed into a desired shape, and the formed body is heat-treated under specified conditions. Since the (2223) phase as the reaction nucleus toward a superconductor is uniformly distributed in the mixture, the (2223) phase is converted to an oxide superconductor in a short time. As a result, the formed body is sintered at a low temp. since the (2212) phase, etc., are contained, the foreign phase is not coarsened, and the Jc is enhanced.

43. 发明专利

JPH04184819A MANUFACTURE OF OXIDE SUPERCONDUCTING WIRE 失效
公开(公告)号：JPH04184819A
公开(公告)日：1992-07-01
申请号：JP30862490
申请日：1990-11-16
申请人： FURUKAWA ELECTRIC CO LTD
发明人： TANAKA YASUZO , KIKUCHI SUKEYUKI
IPC分类号： B21F19/00 , H01B12/04 , H01B13/00
摘要： PURPOSE:To produce a wire with a superconductive characteristic and without no defect such as of swelling by interposing in a composite billet any one of material selected from metal elements of the fourth and fifth group in the periodic table of Mendelejeff and these alloy and the like, over the whole length in the longitudinal direction. CONSTITUTION:Raw material for oxide superconductive body such as Bi, Ti, Y group and the like is used to prepare a powder material for oxide superconductive body. Namely, oxide including a constituent element and primary material powder of carbonate are blended and mixed to have a specified composition and temporality baked, and then crushed to powder. The powder material 1 is filled in a pipe 4, and at the same time at the center a rod-shaped or tube-shaped long-sized metal body 2 made of metal of the 4A and 5A group in the periodic table of Mendelejeff or the alloy thereof is provided to form a composite billet. The billet is plastically worked to have a composite wire with a required shape and size.

44. 发明专利

JPH04181613A MANUFACTURE OF TAPE LIKE OXIDE SUPERCONDUCTOR 失效
公开(公告)号：JPH04181613A
公开(公告)日：1992-06-29
申请号：JP30597890
申请日：1990-11-14
申请人： FURUKAWA ELECTRIC CO LTD
发明人： KIKUCHI SUKEYUKI , NEMOTO KIYOSHI , UNO NAOKI
IPC分类号： B21F19/00 , H01B12/04 , H01B13/00
摘要： PURPOSE:To prevent deformation due to gas generated from a superconducting material by forming, in a tubular shape, a narrow band shape metal thin board equipped with plural penetration holes, on both edges in width direction, and simultaneously supplying oxide superconductive material from these holes so as to form a linear body and applying rolling process, etc., to this linear compound body so that it can be formed in a tape shape. CONSTITUTION:While forming a narrow band shape metal board 10 provided with many penetration holes 16, in stagger, on each of edges 12 and 14 in width direction, in a tubular body by butting both edges 12, and 14, an oxide superconducting material 18 of ceramic is continuously supplied therein from the hole 16 to form a linear compound body 20. By forming a tape like linear body 22 by roll processing the compound body 20 so that the hole 16 is placed on either cone side surface out of wide surface of tape width, and applying heat treatment, gas emitted from the material 18 is discharged in a good condition from the hole 16, and generation of deformation such as buldging by gas, etc., is prevented, so that good tape like oxide superconductor is formed.

45. 发明专利

JPH04174913A MANUFACTURE OF CERAMIC SUPERCONDUCTOR 失效
公开(公告)号：JPH04174913A
公开(公告)日：1992-06-23
申请号：JP30193690
申请日：1990-11-07
申请人： FURUKAWA ELECTRIC CO LTD
发明人： KIKUCHI SUKEYUKI , NEMOTO KIYOSHI , MIMURA MASANAO , UNO NAOKI
IPC分类号： H01B12/10 , H01B12/12 , H01B13/00
摘要： PURPOSE:To improve superconductive characteristic by boring small holes on a metal sheet or a pipe used when molding a composite sheet for air permeability. CONSTITUTION:A raw material layer 3 is formed on a metal sheet 2 bored with small holes for air permeability to obtain a composite sheet 4, the sheet 4 is spirally wound on a metal pipe 5 bored with small holes 1 while the layer 3 is faced to the inside to obtain a spirally wound body 6, the wound body 6 is filled in a metal pipe 8 to obtain a composite billet 9, it is drawn to obtain a composite linear body, and it is heat-treated. A ceramic superconductor which has a good shape and excellent superconductive characteristic and is adaptable to large-capacity excitation in particular is obtained.

46. 发明专利

JPH0494014A CERAMIC SUPERCONDUCTIVE CONDUCTOR 失效
公开(公告)号：JPH0494014A
公开(公告)日：1992-03-26
申请号：JP21341390
申请日：1990-08-10
申请人： FURUKAWA ELECTRIC CO LTD
发明人： KIKUCHI SUKEYUKI , NEMOTO KIYOSHI , ENOMOTO KENJI , UNO NAOKI
IPC分类号： H01F6/06 , H01B12/04 , H01B12/10 , H01B13/00
摘要： PURPOSE:To provide a ceramic superconductive conductor of an excellent mechanical strength and superconductive property by compounding a reinforcement layer consisting of a high strength of material selected from a group of a fiber-reinforced Ag alloy, a particle dispersed reinforced Ag alloy, and a heatproof high strength Ag alloy, to a ceramics superconductor layer through an interposition layer consisting of a precious metal or a precious metal alloy. CONSTITUTION:This ceramic superconductive conductor is a round wire-form substance made by compounding an interposition layer 2 around a ceramic superconductor layer 1 with a circular section, and furthermore, a reinforcement layer 3 on the peripheral surface, forming layers respectively. As the interposition layer 2, a ceramic surerconductor and a precious metal of inactive Ag, Au, Pt, and the like, or a precious metal alloy such as Ag-Ir, Ag-Pd, and Ag-Au are used. And as the reinforcement layer, a compound metal made by dispersing a particle form, a short fiber form, or a long fiber form of ceramics such as SiC, TiC, ZrC, ZrO2, Al2O3, and MgO in an Ag matrix is used.

47. 发明专利

JPH03272515A MANUFACTURE OF CERAMIC SUPERCONDUCTIVE CONDUCTOR 失效
公开(公告)号：JPH03272515A
公开(公告)日：1991-12-04
申请号：JP12583090
申请日：1990-05-16
申请人： FURUKAWA ELECTRIC CO LTD
发明人： NEMOTO KIYOSHI , KIKUCHI SUKEYUKI , ENOMOTO KENJI , UNO NAOKI
IPC分类号： H01B12/04 , H01B13/00
摘要： PURPOSE:To perform diametrical deformation of a complex material uniformly and without uneven processing of an internal raw material layer in a state of bellows so as to obtain the ceramic superconductive conductor having an excellent sectional form by performing extending processing of a complex material, in which a raw material is coated with a metal layer, applying supersonic wave oscillation. CONSTITUTION:A raw material substance able to be made to a ceramic superconductor is filled in a metallic container to be made a complex material, and this complex material is applied with extension processing to be made into a wire rod having a desired shape followed by applying prescribed heat treatment to this wire rod. Now, extension processing is performed while applying supersonic wave oscillation to give sliding to an internal ceramic raw material by means of supersonic wave oscillation for being moved. Supersonic wave oscillation to be applied during extension processing is applied by putting a supersonic wave vibrator 1 on a processing jig such as rollers and dice or a processing material 4. Thereby, a superconductor layer is uniformly processed thus to be able to easily manufacture the ceramic superconductive conductor excellent in a superconductive characteristic such as Jc.

48. 发明专利

JPH03266310A CERAMIC SUPERCONDUCTOR 失效
公开(公告)号：JPH03266310A
公开(公告)日：1991-11-27
申请号：JP6357590
申请日：1990-03-14
申请人： FURUKAWA ELECTRIC CO LTD
发明人： KIKUCHI SUKEYUKI , ENOMOTO KENJI , UNO NAOKI , SHIGA SHOJI
IPC分类号： H01B12/02 , H01B12/10 , H01B12/12 , H01B12/16 , H01B13/00
摘要： PURPOSE:To obtain a superconductor of excellent mechanical strength and cooling performance by reinforcing at least one layer out of a metal hollow substance, an interlaid metallic material layer and an outside metallic material layer with heat-resistance high strength metallic material. CONSTITUTION:A conductor has a ceramic saperconductor layer 2 spirally wound on the outer periphery of a metal hollow substance 1 wound-shaped in its section with a metallic material layer 3 laid there between, and also has a metallic material layer 4 applied along the outer periphery of a wound substance. In the metal hollow substance 1, heat resistance high strength metallic material 5 is buried for reinforcement. The ceramic superconductor with the outer periphery and the hollow portion of the metal hollow substance 1 cooled by cooling medium is used. For the ceramics superconductor layer, superconduc tor such as Bi group and Y group or optional superconductor such as Tl-Ba-Ca- Cu-O group and Ln-Ba-Cu-O group is used. For the metal hollow substance, the interlaid metallic material layer and the outside coating metallic material layer, good heat conductivity metallic material such as Ag, Au, Cu or relative alloy is used. As reinforcing material for these metallic material, heat-resistance high strength metallic material such as Ni, SUS is used.

49. 发明专利

JPH03237073A JOINING METHOD FOR CERAMICS SUPERCONDUCTIVE MATERIAL 失效
公开(公告)号：JPH03237073A
公开(公告)日：1991-10-22
申请号：JP3334890
申请日：1990-02-14
申请人： FURUKAWA ELECTRIC CO LTD
发明人： KIKUCHI SUKEYUKI , MIMURA MASANAO
IPC分类号： B23K1/19 , C04B37/00 , H01B12/02 , H01B13/00 , H01R43/00
摘要： PURPOSE:To join the ceramics superconductive materials without deteriorating the superconductive characteristics by interposing the specified amorphous substance between the ceramics superconductive materials to be joined and heat-treating them. CONSTITUTION:In the case of joining the superconductive materials 1 consisting of a ceramics superconductor with each other, amorphous substance 2 described hereunder is interposed between the superconductive materials 1 and the prescribed heat treatment is performed for these. The amorphous substance 2 has composition wherein at least a metallic component is same as the above- mentioned ceramics superconductor and its melting temp. is lower than the ceramics superconductor. The amorphous substance 2 is produced by melting substance for a raw material capable of being formed into the ceramics superconductor, quenching and coagulating this. As the quenching and coagulating method, various methods such as a single roll method, a twin roll method, a piston anvil method, a rotational submerged spinning method and an atomization method are utilized. Further as the shape, an arbitrary shape such as a sheet shape, a fibrous shape and a powdery shape is applied.

50. 发明专利

JPH03202433A MANUFACTURE OF METAL-CERAMICS COMPOSITE 失效
公开(公告)号：JPH03202433A
公开(公告)日：1991-09-04
申请号：JP34368689
申请日：1989-12-29
申请人： FURUKAWA ELECTRIC CO LTD
发明人： KIKUCHI SUKEYUKI , SHIGA SHOJI , OZAKI MASANORI
IPC分类号： B22F3/14 , B22F3/18 , B22F3/20 , C22C1/10 , C22C47/14
摘要： PURPOSE:To manufacture the composite excellent in strength, wear resistance, etc., by filling the powder of ceramics into a metallic container, executing vacuum sealing, thereafter rolling the container into a sheet shape, forming the sheet-shaped body into a spiral shape, filling it into a metallic container once more, executing vacuum sealing and thereafter subjecting the spiral-shaped body to hot extruding and cold drawing. CONSTITUTION:The powder 2 of ceramics such as Al2O3, MgO and ZrB2 is filled into a metallic container 1 of Al, Cu, Fe or the like, and the inside of the container 1 is evacuated and sealing is executed by welding. The container is rolled by a flat roll and is formed into a thin sheet-shaped composite 4. The composite is thereafter rolled up into a spiral shape 5 and is again filled into a metallic container 11. The inside of the container is evacuated once more and sealing is executed by welding. After that, the container is successively subjected to hot extruding and cold drawing to manufacture a composite constituted of the metal and the ceramics. Or, a stage of forming into the above spiral-shaped body 5 and a stage of vacuum-sealing the above into a metallic container and working it into a sheet shape are repeatedly executed for desired times, respectively, into a composite, by which the metal-ceramics composite of which the ceramics are finely dispersed into a metallic matrix can be manufactured.

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