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51. 发明专利

JPH10255563A NB3SN SUPERCONDUCTING WIRE 失效
公开(公告)号：JPH10255563A
公开(公告)日：1998-09-25
申请号：JP5513097
申请日：1997-03-10
申请人： NAT RES INST METALS , KOBE STEEL LTD
发明人： INOUE TADASHI , KIYOSHI TSUKASA , MIYATAKE TAKAYUKI , MATSUKURA NARIKAZU , MIYAZAKI TAKAYOSHI
IPC分类号： H01B12/10 , H01B13/00
摘要： PROBLEM TO BE SOLVED: To provide an Nb3 Sn superconducting wire which is excellent in processability during wire manufacture and has high resistance and strength, when it inevitably includes an Nb/Cu-Sn alloy composite multiconductor part, in which a filament made from Nb or an Nb alloy material is embedded in an Sn-containing Cu-based alloy material, and a Ta layer or a Ta alloy layer. SOLUTION: The average crystal grain size of a Ta layer on the cross section of a wire is 0.3 to 2.0μm. Alternatively, a Ta alloy layer containing one kind or more selected from among Nb, V, Zr, and Hf, for a total of 0.1 to 10%, is used. Or an intermediate layer 5 made of a metal or alloy whose Vickers hardness is somewhere between those of Ta and a Cu-Sn alloy is formed between an Nb/Cu-Sn alloy composite multiconductor part 1 and the Ta layer 4, whereby this superconducting wire having excellent processability and high resistance and strength is obtained.

52. 发明专利

JPH1012056A NB 3 SN SUPERCONDUCTIVE WIRE AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH1012056A
公开(公告)日：1998-01-16
申请号：JP15862596
申请日：1996-06-19
申请人： KOBE STEEL LTD
发明人： MIYATAKE TAKAYUKI , MIYAZAKI TAKAYOSHI , MONJU YOSHIYUKI , TATARA ISAMU , MAEDA YUKIHIRO
IPC分类号： B21C1/00 , C22C1/00 , C22C9/00 , C22C27/02 , H01B12/02 , H01B13/00
摘要： PROBLEM TO BE SOLVED: To efficiently manufacture an unit weight of some tens to hundreds kg level having its stable critical current characteristics by forming an Nb3 Sn superconductive wire in which a coated copper is integrated by metal bonding of an outside copper and of an inside copper. SOLUTION: A coated portion of an Nb3 Sn superconductive wire having its copper rate of 1 to 10, for example, is formed of good metal bonding between a copper portion (inside copper) of the Nb3 Sn superconductive wire with the low copper rate being a core material and a copper portion (outside copper) of a copper pipe into which this core material is to be inserted. Thus, the outside copper and the inside copper are integrated by metal bonding, and whereby the Nb3 Sn superconductive wire with stable critical current characteristics and a greater single weight is obtained. Next, to manufacture a Nb3 Sn superconductive wire with high copper rate, the Nb3 Sn superconductive wire compound wire material in which the area rate of a copper portion is 0.2 to 1, for example, against a non-copper portion is extended by inserting the material into a copper pipe having its smoother inner surface than an outer surface of this compound core material. Thus, a single quantity of some tens to hundred kg level having its stable critical current characteristics is effectively manufactured.

53. 发明专利

JPH0963366A INSULATION-COVERED SUPERCONDUCTING WIRE ROD AND ITS MANUFACTURE 失效
公开(公告)号：JPH0963366A
公开(公告)日：1997-03-07
申请号：JP21357995
申请日：1995-08-22
申请人： KOBE STEEL LTD
发明人： MIYAZAKI TAKAYOSHI , MIYATAKE TAKAYUKI , INOUE YASUHIKO , MATSUKURA ISAKAZU , CHIBA MASAMICHI , SHIMADA MASAO
IPC分类号： H01F6/00 , H01B7/02 , H01B12/04 , H01B13/06 , H01F6/06
摘要： PROBLEM TO BE SOLVED: To attain high withstand voltage of an insulation-covered superconducting wire rod by impregnating curing-resin into an insulating fiber braid, and manufacturing an insulation-covered superconducting wire rod composed of insulating fiber braid-containing plastic. SOLUTION: An insulating covering layer 3 is provided on a surface of a round wire-shaped superconducting wire rod 2, and this insulating covering layer 3 is composed of insulating fiber braid-containing plastic by impregnating curing-resin R into an insulating fiber braid 1. First of all, T-glass fiber having a diameter of about 5μm is contained in a yarn shape, and the insulating fiber braid knitted into a bag is formed. Next, after the insulating fiber braid is put on a superconducting wire rod having a filament-shaped Nb ultrafine wire in a Cu-Sn alloy wire having a wire diameter of 1.20mm, formation heat treatment is performed on Nb3 Sn in a vacuum. Therefore, a material by putting a bag-shaped insulating fiber braid on a superconducting wire rod where an Nb ultrafine wire having an Nb3 Sn layer in Cu alloy exists as a superconductor filament can be obtained. This wire rod has high withstand voltage at a room temperature and in liquid nitrogen, and has high critical current density.

54. 发明专利

JPH08339726A MANUFACTURE OF NB3SN SYSTEM SUPERCONDUCTIVE WIRE 失效
公开(公告)号：JPH08339726A
公开(公告)日：1996-12-24
申请号：JP14658595
申请日：1995-06-13
申请人： KOBE STEEL LTD
发明人： MATSUKURA ISAKAZU , CHIBA MASAMICHI , MIYAZAKI TAKAYOSHI , INOUE YASUHIKO , MIYATAKE TAKAYUKI , SHIMADA MASAO
IPC分类号： C22F1/00 , B22F3/14 , B22F3/15 , B22F3/20 , C22C1/04 , H01B12/06 , H01B13/00
摘要： PURPOSE: To improve a critical current density in a high magnetic field, by using a molded body, of mixed powder of Nb and Cu, as an Nb wire. CONSTITUTION: As the Nb wire of an Nb3 Sn system superconductive wire a molded body of mixed powder of Nb and Cu is used. A critical current density, higher than that of an Nb alone superconductive wire can be shown when a Cu inclusion ratio is 30wt.% or less in the mixed ratio of the Nb powder and the Cu powder, and is preferably 1-22wt.%, more preferably 5-10wt.%.

55. 发明专利

JPH06111645A MANUFACTURE OF NB3AL SUPERCONDUCTOR 失效
公开(公告)号：JPH06111645A
公开(公告)日：1994-04-22
申请号：JP26013292
申请日：1992-09-29
申请人： KOBE STEEL LTD
发明人： MATSUKURA ISAKAZU , SHIMADA MASAO , MIYATAKE TAKAYUKI , MIZOMATA YOUICHI , MIYAZAKI TAKAYOSHI
IPC分类号： C22C1/00 , C22F1/00 , H01B12/10 , H01B13/00
摘要： PURPOSE:To manufacture a Nb3Al superconductor, which has the excellent critical current characteristic and the excellent strain resistant characteristic. CONSTITUTION:At the time of manufacturing Nb3Al group superconductor expressed by a formula Nb3Al or Nb3(Al, M) (in the formula, M means one or more kinds to be selected among Sn, Ge, Si, Ti, Zr, Hf, V and Ta), intermetallic compound Nb2Al or Nb2 (Al, M) and Nb or Nb group alloy are made to react by heating them in the non-active gas atmosphere under the pressure at 500kgf/cm or more. Heating is performed after the pressurization, or heating is performed again under the pressurization after the heating.

56. 发明专利

JPH01204314A MANUFACTURE OF OXIDE SUPERCONDUCTOR 失效
公开(公告)号：JPH01204314A
公开(公告)日：1989-08-16
申请号：JP2842388
申请日：1988-02-09
申请人： KOBE STEEL LTD
发明人： MIYATAKE TAKAYUKI , OGAWA RIKURO
IPC分类号： H01L39/24 , C01G1/00 , C01G3/00 , H01B12/04 , H01B13/00
摘要： PURPOSE:To make it possible to obtain a superconductor having an excellent superconductive characteristic, while being easily formed in a prescribed shape and readily handled by cooling quickly and solidifying alloy-melting in which 2-50wt. percent of Y or rare-earth metal, alkaline-earth metal and Cu are included in an Ag-radical, so as to form a thin belt or a wire material and oxidizing it through heat treatment thereafter. CONSTITUTION:Alloy-melting in which 2-50wt. percent of Y or rare-earth metal, alkaline-earth metal, and Cu are included in an Ag-radical, is cooled quickly and solidified, and then is formed in a thin belt or a wire material. After that, it is oxidized by heat treatment. La, Lu, Yb, Tm, Er, Ho, Dy and Tb are listed as desirable rare earth metals. Ba, Sr and Ca are desirable as alkaline-earth metals. Also, Ag is set in a range from 50wt. percent to 98wt. percent. Thus, an excellent superconductive characteristic can be secured, and can be obtained an oxide superconductor which may be formed excellently in a prescribed shape.

57. 发明专利

JPS648269A PRODUCTION OF SPUTTERING TARGET MATERIAL 失效
公开(公告)号：JPS648269A
公开(公告)日：1989-01-12
申请号：JP16490787
申请日：1987-06-30
申请人： KOBE STEEL LTD
发明人： OGAWA RIKURO , MIYATAKE TAKAYUKI , KAWAI NOBUYASU
IPC分类号： C30B29/22 , C04B35/653 , C23C14/34 , H01B12/06 , H01B13/00 , H01L39/12
摘要： PURPOSE:To produce the title sputtering target material for a stabilized superconducting thin film by heating and melting the mixed powder of the oxides of Ln (Y, Lu, etc.), Ba, and Cu or their carbonates with a microwave, and then cooling and solidifying the melt. CONSTITUTION:The powders of the oxides or carbonates of Ln (Ln is Y, Lu, Yb, Tm, Er, Ho, Dy, and Se), Ba, and Cu are mixed in a specified ratio. The obtained mixture S is supplied to a crucible 3 from a hopper 1 through a screw feeder 2. A microwave is simultaneously projected through a waveguide 4. When the mixture S in the crucible 3 is melted, a mixture S is newly supplied and melted. Meanwhile, a melt layer at the lower part in the crucible 3 is solidified. A pure-oxygen atmosphere is preferably used as the melting atmosphere. By this method, the ingot 1 of the sputtering material capable of forming a thin film having stabilized superconductivity is obtained.

58. 发明专利

JPS63141214A MANUFACTURE OF SUPERCONDUCTIVE WIRE 失效
公开(公告)号：JPS63141214A
公开(公告)日：1988-06-13
申请号：JP28708586
申请日：1986-12-01
申请人： KOBE STEEL LTD
发明人： OGAWA RIKURO , MIYATAKE TAKAYUKI
IPC分类号： C22C1/04 , H01B13/00

59. 发明专利

JPS63128508A MANUFACTURE OF NB3SN SUPERCONDUCTIVE WIRE 失效
公开(公告)号：JPS63128508A
公开(公告)日：1988-06-01
申请号：JP27433386
申请日：1986-11-18
申请人： KOBE STEEL LTD
发明人： MIYATAKE TAKAYUKI , OGAWA RIKURO
IPC分类号： H01B12/10 , H01B13/00

60. 发明专利

JPS63126205A COMPOUND SUPERCONDUCTING MAGNET 失效
公开(公告)号：JPS63126205A
公开(公告)日：1988-05-30
申请号：JP27232986
申请日：1986-11-14
申请人： KOBE STEEL LTD
发明人： MIYATAKE TAKAYUKI , OGAWA RIKURO , MATSUMOTO KIYOSHI
IPC分类号： H01F6/06
摘要： PURPOSE:To obtain the compound superconducting magnet which is able to withstand a heat treatment by a method wherein the spacer and/or the bobbin to be arranged between windings are formed using a ceramic material, and the heat generated by the occurrence of an eddy current is prevented. CONSTITUTION:The spool 1, the side plate 2 and the spacer 3, with which a bobbin is constituted, are formed using a ceramic material. Spacerfixing grooves 4, which are radially arranged on the inner side of the side plate 2, are provided on the side plate 2. The introduction hole 5 of a liquid He is bored on the inner surface of the side plate 2 which is pinched by the fixing grooves 4. A winding layer is formed by winding a wire material W on the upper part of the spacer 4. When a winding body is heat-treated at the temperature higher than 500 deg.C, a compound superconducting magnet on which superconductive substance will be grown can be obtained. As a result, the heat generating by the occurrence of an eddy current can be prevented, and the compound superconducting magnet which is able to withstand a heat treatment can be obtained.

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