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1. 发明专利

JPH03171516A MANUFACTURE OF COMPOUND SUPERCONDUCTING WIRE 失效
公开(公告)号：JPH03171516A
公开(公告)日：1991-07-25
申请号：JP30900089
申请日：1989-11-30
申请人： NAT RES INST METALS , TOSHIBA CORP
发明人： INOUE TADASHI , TAKEUCHI TAKAO , ITO KIKUO , YAMAMOTO KAZUO , MURASE AKIRA
IPC分类号： B21F19/00 , C22F1/00 , C25D7/06 , H01B12/10 , H01B13/00
摘要： PURPOSE:To increase the Sn concentration of an alloy matrix and improve critical current density by applying Sn plating having specific thickness to an inside stabilization bronze wire having specific Sn concentration, and moreover making heat treatment under a given condition. CONSTITUTION:In an inside stabilization bronze wire, the followings are formed: a Cu stabilization material 1 at the center, a Ta diffusion barrier 2 buried in the periphery of the Cu stabilization material 1, and moreover a Cu-Sn alloy matrix 3 having a containing Sn concentration of 5-15wt.%, in which a filament 4 composed of Nb-Ta alloy is buried in the periphery of the barrier 2. Sn plating 5 having a thickness of 0.1--5% of a wire material outer diameter is applied to the wire material surface. Next the diffusion heat treatment of Sn is made to increase the mean Sn concentration of the matrix 3 to the solution limit of an alpha alloy phase of 8-35wt.%. Moreover the critical current density of a bronze superconductive wire can be improved by making Nb-Sn production heat treatment at a given temperature rising rate.

2. 发明专利

JP2000113748A Nb3 AL COMPOUND SUPERCONDUCTING CONDUCTOR AND ITS MANUFACTURE 失效
公开(公告)号：JP2000113748A
公开(公告)日：2000-04-21
申请号：JP28749298
申请日：1998-10-09
申请人： NAT RES INST METALS , HITACHI CABLE , HITACHI LTD
发明人： TAKEUCHI TAKAO , KIYOSHI TSUKASA , ITO KIKUO , WADA HITOSHI , IIJIMA YASUO , INOUE TADASHI , NAKAGAWA KAZUHIKO , IWAKI GENZO , MORIAI HIDESUMI , YAMANAKA TSUTOMU , KIMURA MORIO , INABA SHOJI , AIHARA KATSUZO , WADAYAMA YOSHIHIDE
IPC分类号： B21F19/00 , C22C1/00 , C22F1/00 , H01B12/10 , H01B13/00
摘要： PROBLEM TO BE SOLVED: To provide an Nb3 Al compound superconducting conductor having an outer matrix satisfactorily joined to a stabilizing material without leaving any gaps on their interface, and a manufacturing method for the same. SOLUTION: A molded body with a hexagonal cross-section is made by forming an Nb coating 5 and a Cu coating 6 around a laminated body 1, thereafter the Cu coating is peeled off and removed to make a single wire 8. Next, a plurality of such single wires are packed into an Nb tube 9, a Cu-Ni alloy tube 10 is formed on the Nb tube 9, then it is area-reducingly worked, and the alloy tube 10 is peeled off to form a multi-wire 12 having an outer matrix 9', Then, an Nb-Al supersaturated solid solution is produced on a portion of the laminated body 1. In a cooling treatment at this time, Ga is used as a coolant. A stabilizing material 13 is formed on a surface of the outer matrix 9', then a re-heating treatment is performed for separating out an Nb3 Al phase from the Nb-Al supersaturated solid solution, or area-reducing work is performed prior to the re-heating treatment, whereby an Nb3 Al compound superconducting conductor is manufactured.

3. 发明专利

JPH09104935A HIGH STRENGTH CONDUCTIVE CHROMIUM-CONTAINING COPPER ALLOY AND ITS PRODUCTION 失效
公开(公告)号：JPH09104935A
公开(公告)日：1997-04-22
申请号：JP26167095
申请日：1995-10-09
申请人： NAT RES INST METALS
发明人： ADACHI KAZUHIKO , TAKEUCHI TAKAO , MITSUI TATSURO , SUZUKI HIROO
IPC分类号： C22F1/08 , C22C9/00 , C22F1/00
摘要： PROBLEM TO BE SOLVED: To produce a high strength conductive Cr-contg. copper alloy by preparing a Cu two phase alloy having specified tensile strength and electric conductivity and contg. a specified amt. of fibrously dispersed Cr crystals. SOLUTION: A melted material of a Cu two phase alloy contg., by weight, 10 to 21% Cr is subjected to hot working at 700 to =99% working ratio. Thus, the Cu two phase alloy having >=800MPa tensile strength and >=80% electric conductivity and contg. 10 to 21% fibrously dispersed Cr crystals can be obtd.

4. 发明专利

JPH06283059A MANUFACTURE OF NB3AL VERY FINE MULTICORE SUPERCONDUCTIVE WIRE 失效
公开(公告)号：JPH06283059A
公开(公告)日：1994-10-07
申请号：JP8954793
申请日：1993-03-25
申请人： NAT RES INST METALS
发明人： INOUE TADASHI , IIJIMA YASUO , TAKEUCHI TAKAO , KOSUGE MICHIO
IPC分类号： C22F1/00 , H01B12/10 , H01B13/00
摘要： PURPOSE:To manufacture a very fine multicore structural long superconductive wire excellent in stability and altemate current characteristics as well without losing its advantages by an Nb3Al superconductive material excellent in high- magnetic field characteristics and distortion resistance characteristics. CONSTITUTION:A composite of niobium and an aluminum alloy contg. one of 2-15 at% Mg, 2-10 at% Zn, 2-10 at% Li, 1-8 at% Ag, or 0.1-7 at% Cu is prepared. Cold wire drawing machining is applied to the composite until the aluminum alloy has a thickness of up to 10mum. Next, heat treatment at least 1500 degrees C for up to 5 seconds, using current supply heating is applied while moving the composite wire. The composite wire is introduced in a liq. metal melting tank 5 for quenching. The composite wire is formed into a composite wire in which an Nb-Al supersaturated solid soln. alloy filament is placed in a niobium matrix. Additional heat treatment is then applied at 650-950 degrees C to transform the Nb-Al supersaturated solid soln. alloy filament into an A15 phase compound filament, forming an Nb3Al very fine multicore superconductive wire rod. In addition, at least one of 2-8 at%-Si or 2-25at.%-Ge is added to the aluminum alloy.

5. 发明专利

JPH06196033A MANUFACTURE OF V3 SI SUPERCONDUCTIVE VERY FINE MULTICORE WIRE 失效
公开(公告)号：JPH06196033A
公开(公告)日：1994-07-15
申请号：JP30329092
申请日：1992-10-16
申请人： NAT RES INST METALS
发明人： TAKEUCHI TAKAO , INOUE TADASHI
IPC分类号： C22C27/02 , H01B12/10 , H01B13/00
摘要： PURPOSE:To high efficiently obtain an AC V3Si superconductive very fine multicore wire excellent in a ferromagnetic field characteristic having high stability with a large temperature margin and low AC loss. CONSTITUTION:In a compound constituted of Cu-Si alloy (bronze) matrix and a V core, composition of bronze and volume ratio of matrix/core are adjusted to control composition ratio of V to Si (V atm number/Si atm number) to 1.7 or more. After this compound is worked into a linear shape till a V core diameter becomes 10mum or less by intermediate annealing and cold working, heat treatment of diffusion producing a V5Si3 layer 3 and V3Si layer 2 around the V core 1 from a side of bronze 4, decreasing Si concentration, is performed, to manufacture an AC superconductive very fine multicore wire rod excellent in a ferromagnetic field characteristic by utilizing the V5Si3 layer 3 as a high electric resistance layer of cutting physical and electric coupling between V3Si filaments and the bronze 4 of reducing Si concentration as a stabilizing material.

6. 发明专利

JPH0636331B2 失效
公开(公告)号：JPH0636331B2
公开(公告)日：1994-05-11
申请号：JP6008088
申请日：1988-03-14
申请人： NAT RES INST METALS
发明人： INOUE TADASHI , TAKEUCHI TAKAO , IIJIMA YASUO
IPC分类号： B21C1/00 , C22F1/00 , H01B12/04 , H01B12/10 , H01B13/00

7. 发明专利

JPH0251807A MANUFACTURE OF NB3AL SUPERCONDUCTING WIRE ROD WITH EXTREMELY FINE MULTIPLEX STRUCTURE 失效
公开(公告)号：JPH0251807A
公开(公告)日：1990-02-21
申请号：JP20023888
申请日：1988-08-12
申请人： NAT RES INST METALS
发明人： INOUE TADASHI , TAKEUCHI TAKAO , KOSUGE MICHIO
IPC分类号： C22C1/00 , C22F1/00 , H01B12/10 , H01B13/00
摘要： PURPOSE:To easily and efficiently manufacture an Nb3Al wire rod with excellent superconductive characteristic under the strong magnetic field and AC magnetic field by arranging a composite body made of aluminum or aluminum alloy and a niobium base material in a matrix material made of metal or alloy, forming it into a composite wire rod by cold machining, and heat-treating it at a high temperature in a short time of 10sec or below. CONSTITUTION:A composite material 1 is linearly machined by cold machining and compositely formed 3 by a matrix material 2. The diameter or thickness ot the aluminum or aluminum alloy in the composite wire rod 3 is made 0.5mum or below by this machining. An Nb3Al superconducting wire rod 3 with excellent strong magnetic field characteristic is obtained by heating it at a high temperature and cooling it in a short time of 10sec or below. The Nb3Al wire rod 3 with excellent superconductive characteristic and a small AC loss is easily obtained.

8. 发明专利

JPH0644427B2 失效
公开(公告)号：JPH0644427B2
公开(公告)日：1994-06-08
申请号：JP20023888
申请日：1988-08-12
申请人： NAT RES INST METALS
发明人： INOUE TADASHI , TAKEUCHI TAKAO , KOSUGE MICHIO
IPC分类号： C22C1/00 , C22F1/00 , H01B12/10 , H01B13/00

9. 发明专利

JPH01140521A MANUFACTURE OF NB3AL COMPOUND SUPERCONDUCTIVE WIRE ROD 失效
公开(公告)号：JPH01140521A
公开(公告)日：1989-06-01
申请号：JP6008088
申请日：1988-03-14
申请人： NAT RES INST METALS
发明人： INOUE TADASHI , TAKEUCHI TAKAO , IIJIMA YASUO
IPC分类号： B21C1/00 , C22F1/00 , H01B12/04 , H01B12/10 , H01B13/00
摘要： PURPOSE:To manufacture an Nb3Al compound superconductive wire rod by processing a composite material consisting of an aluminium alloy containing Cu and niobium into a wire rod until the aluminium alloy attains a specific thickness followed by heat treatment. CONSTITUTION:Scores to several hundreds of pieces of round bars of composite materials 3 and 4 consisting of Nb1 and an Al alloy 2 are bundled to be fitted in a pipe made of oxygen free copper 5 or cypronickel 6, and the composite material of this multicore construction are processed into a lengthy wire shape by an extrusion process and a cold core process, etc. Further, these are cut to the appropriate length, and scores to several hundreds thereof are bundled for being again fitted in a pipe made of oxygen free copper 5 or of cypronickel 6 in order to be processed into a lengthy rod shape. A composite rod of multicore construction including thousands to tens of thousands of Al alloy cores is obtained, while being still further processed into a wire rod having several hundred thousand to several ten millions pieces of the Al alloy. Here, a dia meter of an Al alloy core in the final shape is less than 1mum. Further, the Al alloy shall contain 0.1-3wt.% of Cu.

10. 发明专利

JPS5669721A METHOD OF MANUFACTURING NB3SN SUPERCONDUCTOR 失效
公开(公告)号：JPS5669721A
公开(公告)日：1981-06-11
申请号：JP14545879
申请日：1979-11-12
申请人： NAT RES INST METALS
发明人： TATEKAWA KIYOUJI , TOGANOU KAZUMASA , TAKEUCHI TAKAO
IPC分类号： H01L39/12 , C22C27/02 , H01B13/00

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