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1. 发明专利

JPH08287752A MANUFACTURE OF SUPERCONDUCTING WIRE MATERIAL 失效
公开(公告)号：JPH08287752A
公开(公告)日：1996-11-01
申请号：JP8568195
申请日：1995-04-11
申请人： JAPAN ATOMIC ENERGY RES INST , HITACHI CABLE
发明人： NISHI MASATAKA , ISONO TAKAAKI , TSUJI HIROSHI , YOSHIDA KIYOSHI , SASAKI KAZUTAKA , MORIAI HIDESUMI , KIKUCHI KENICHI , IWAKI GENZO , SAKAI SHUJI
IPC分类号： B21F19/00 , C22F1/00 , H01B12/10 , H01B13/00
摘要： PURPOSE: To provide a method by which it is possible to obtain an A3 B type superconducting wire material having excellent workability and a small AC loss. CONSTITUTION: Filaments 2 of Nb or Nb base alloy are embedded in a matrix 1 of Cu-Sn group alloy so as to form composite material. The composite material is touched to stabilizing material 5 so as to form a single structure. In the single structure, a Ta layer 3 which produces no superconducting compound cooperating with the single structure by heating treatment is arranged along the whole length of the single structure as a diffusion barrier which separates stabilizing metal 5 from the composite material. In a manufacture of superconducting wire material by which the single structure is heating treated so that Nb or Nb group alloy is allowed to react with the Sn of the matrix 1 so as to form a superconducting compound Nb3 Sn, an Nb layer 4 is arranged between the Ta layer 3 and the stabilizing metal 5 as an additional barrier, and processing is conducted. In that case, as the thickness ratio of Ta and Nb, the range of 1:0.3 to 1:3 is selected.

2. 发明专利

JPH08287748A NB3SN COMPOUND SUPERCONDUCTING WIRE MATERIAL 失效
公开(公告)号：JPH08287748A
公开(公告)日：1996-11-01
申请号：JP8568295
申请日：1995-04-11
申请人： JAPAN ATOMIC ENERGY RES INST , HITACHI CABLE
发明人： NISHI MASATAKA , NUNOTANI YOSHIHIKO , TSUJI HIROSHI , YOSHIDA KIYOSHI , IWAKI GENZO , SAKAI SHUJI , KIKUCHI KENICHI , SASAKI KAZUTAKA
IPC分类号： C22F1/00 , H01B12/10 , H01B13/00 , H01F6/06
摘要： PURPOSE: To provide new Nb3 Sn superconducting wire material which has a low AC loss, a high magnetic field current characteristic, and excellent workability. CONSTITUTION: Cu-Sn alloy is formed into a matrix 1, and between a superconducting complex 3 which is formed by embedding a large number of filaments 2 of Nb or Nb base alloy having a layer of a Nb3 Sn superconducting compound at least on the surface thereof in the matrix 1 and stabilizing material 6 arranged around the superconducting complex 3, an Nb group alloy layer 5 is arranged on a stabilizing material 6 side and a Ta or Ta group alloy layer 4 is arranged on a superconducting complex 3 side.

3. 发明专利

JPH08287749A NB3SN COMPOUND SUPERCONDUCTING WIRE MATERIAL 失效
公开(公告)号：JPH08287749A
公开(公告)日：1996-11-01
申请号：JP8568395
申请日：1995-04-11
申请人： JAPAN ATOMIC ENERGY RES INST , HITACHI CABLE
发明人： NISHI MASATAKA , TAKAHASHI YOSHIKAZU , TSUJI HIROSHI , YOSHIDA KIYOSHI , IWAKI GENZO , SAKAI SHUJI , KIKUCHI KENICHI , SASAKI KAZUTAKA
IPC分类号： C22F1/00 , H01B12/10 , H01F6/06
摘要： PURPOSE: To provide new Nb3 Sn superconducting wire material which has a low AC loss, a high magnetic field current characteristic, and excellent workability. CONSTITUTION: Cu-Sn alloy is formed into a matrix 1, and between a superconducting complex 3 which is formed by embedding a large number of filaments 2 of Nb or Nb base alloy having a layer of a Nb3 Sn superconducting compound at least on the surface thereof in the matrix 1 and stabilizing material 6 arranged around the superconducting complex 3, a layer 5 of Cu matrix dispersion reinforcing material is arranged on a stabilizing material 6 side and a Ta layer 4 is arranged on a superconducting complex 3 side.

4. 发明专利

DE69836933D1 未知
公开(公告)号：DE69836933D1
公开(公告)日：2007-03-15
申请号：DE69836933
申请日：1998-04-22
申请人： SUMITOMO CHEMICAL CO , HITACHI CABLE
发明人： HOSONO FUMIKAZU , TATSUMI NORIYUKI , KIKUCHI KENICHI , IWAKI GENZO , MORIAI HIDEZUMI , YASUDA HITOSHI , TAKAHASHI AKIHIKO
IPC分类号： H01L39/14
摘要： A tube made of oxygen free copper is filled with a plurality of copper matrix Nb-Ti superconducting lead wires to obtain a composite billet, the resulting billet is subjected to hydrostatic pressure extrusion, and further, ageing heat treatment and wire drawing process are repeated for the composite material three times to prepare a Cu/Nb-Ti superconducting single wire. Then, the resulting Cu/Nb-Ti superconducting single wires are stranded each other to produce a superconducting strand. The superconducting strand is coated with an aluminum alloy to which either a content of 20 to 100 ppm of Cu and Mg or Mg, or a content of 10 to 120 ppm of Si and Cu is added by means of hot extrusion, the strand thus extruded is reduced by 0 to 20% in accordance with cold working to produce an aluminum stabilized superconductor. As a result, such aluminum stabilized superconductor having high mechanical strength as well as good thermal and electrical stability is provided while achieving light weight and downsizing thereof.

5. 发明专利

DE69836933T2 未知
公开(公告)号：DE69836933T2
公开(公告)日：2007-08-09
申请号：DE69836933
申请日：1998-04-22
申请人： SUMITOMO CHEMICAL CO , HITACHI CABLE
发明人： HOSONO FUMIKAZU , TATSUMI NORIYUKI , KIKUCHI KENICHI , IWAKI GENZO , MORIAI HIDEZUMI , YASUDA HITOSHI , TAKAHASHI AKIHIKO
IPC分类号： H01L39/14
摘要： A tube made of oxygen free copper is filled with a plurality of copper matrix Nb-Ti superconducting lead wires to obtain a composite billet, the resulting billet is subjected to hydrostatic pressure extrusion, and further, ageing heat treatment and wire drawing process are repeated for the composite material three times to prepare a Cu/Nb-Ti superconducting single wire. Then, the resulting Cu/Nb-Ti superconducting single wires are stranded each other to produce a superconducting strand. The superconducting strand is coated with an aluminum alloy to which either a content of 20 to 100 ppm of Cu and Mg or Mg, or a content of 10 to 120 ppm of Si and Cu is added by means of hot extrusion, the strand thus extruded is reduced by 0 to 20% in accordance with cold working to produce an aluminum stabilized superconductor. As a result, such aluminum stabilized superconductor having high mechanical strength as well as good thermal and electrical stability is provided while achieving light weight and downsizing thereof.

6. 发明专利

DE10140109A1 Niobium alloy type superconductor wire for superconductor magnet, has niobium alloy filaments heated with composite reinforcing material with larger mechanical strength 未知
公开(公告)号：DE10140109A1
公开(公告)日：2003-03-06
申请号：DE10140109
申请日：2001-08-16
申请人： HITACHI CABLE
发明人： IWAKI GENZO , KUMURA MORIO
IPC分类号： H01B12/10 , H01B13/00 , H01F6/06 , H01L39/14
摘要： A filament aggregate has several niobium alloy filaments arranged in the copper-tin type alloy matrix. The niobium alloy type superconductor compound is generated by heating aggregate with the reinforcing material whose mechanical strength is larger.

7. 发明专利

JP2003086032A Nb3Sn SUPERCONDUCTIVE WIRE MATERIAL 审中-公开
公开(公告)号：JP2003086032A
公开(公告)日：2003-03-20
申请号：JP2002234170
申请日：2002-08-09
申请人： HITACHI CABLE
发明人： IWAKI GENZO , KIMURA MORIO
IPC分类号： H01B12/10 , H01B13/00 , H01F6/06 , H01L39/14
摘要： PROBLEM TO BE SOLVED: To provide an Nb3 Sn superconductive wire material that has sufficient strength, when it is used for a superconductive magnet, against the radial force during magnet operation and shows little characteristic deterioration due to mechanical deformation caused by the radial force. SOLUTION: In an Nb3 Sn superconductive wire material that includes a bronze/filament aggregate in which plurality of niobium (Nb) or niobium-alloy filaments are disposed in a Cu-Su alloy matrix, the niobium or niobium alloy filaments that make up a bronze/filament aggregate 3' are composited into composite filaments by a filament stiffener. The filament stiffener has mechanical strength bigger than that of the niobium or niobium alloy, in a condition of the room temperature or below, after the heat treatment for generating an Nb3 Sn superconductive compound.

8. 发明专利

JPH11250748A MANUFACTURE OF NB3AL BASED SUPERCONDUCTING WIRE 失效
公开(公告)号：JPH11250748A
公开(公告)日：1999-09-17
申请号：JP4938898
申请日：1998-03-02
申请人： HITACHI CABLE
发明人： MORIAI HIDESUMI , IWAKI GENZO , FUKUDA KUNIHIRO , KIMURA MORIO , NAKAGAWA KAZUHIKO
IPC分类号： H01B13/00 , H01B12/10
摘要： PROBLEM TO BE SOLVED: To provide a wire rod which is free from disconnection even if it is elongated by severe digressive and plastic works, has a high critical magnetic field, and is superior in distortion resistance by constituting a wire rod in such a state that an Nb-Al bond integral composite sheet which is composed of an Nb sheet and an Al sheet of a prescribed molecular weight ratio is wound around an Nb rod. SOLUTION: An Nb sheet layer 1 is cladded on both surfaces of an Al sheet layer 2 so that an Nb-Al bond integral composite sheet composed of an Nb-Al 3-layer clad sheet 4 is provided. This composite sheet can be formed by welding or sticking the Nb sheet to the Al sheet by adhesive. In this case, it is preferable that the thicknesses of the Nb sheet and the Al sheet are so constituted as to be Nb/Al=3.0-4.5/1 in terms of the molecular weight ratio. This Nb-Al 3-layer clad sheet 4 is wound around the Nb rod by being used as a forming material of Nb3 Al and the obtained Nb-Al composite sheet winding wire body is degressively and plastically worked to be a wire rod, heat treated, and diffusedly reacted so that the Nb3 Al based superconducting wire can be provided.

9. 发明专利

JPH11144536A NIOBIUM-ALUMINUM BASED SUPERCONDUCTOR AND ITS MANUFACTURE 失效
公开(公告)号：JPH11144536A
公开(公告)日：1999-05-28
申请号：JP30284097
申请日：1997-11-05
申请人： HITACHI LTD , HITACHI CABLE
发明人： AIHARA KATSUZO , WADAYAMA YOSHIHIDE , IWAKI GENZO , NAKAGAWA KAZUHIKO , MORIAI HIDESUMI
IPC分类号： B21F7/00 , C22F1/00 , H01B12/10 , H01B13/00
摘要： PROBLEM TO BE SOLVED: To provide an Nb-Al based superconductor which can maintain a stable operating state, allows the passage of a large-capacity current, and can produce a high magnetic field and a method for manufacturing the same. SOLUTION: In an Nb-Al based superconductor formed by the twisting together of a plurality of superconducting wires 4 each so formed that a number of Nb-Al based superconducting filaments 1 are buried in copper(Cu) or an alloy based metal whose base material is copper (Cu) or in niobium(Nb) or an alloy base metal 2 whose base material is niobium(Nb), with copper(Cu) 3 placed on their outer peripheries, at least a part of the plurality of superconducting wires 4 are connected together by diffused junction. Therefore, the states of electrical and mechanical junctions at the contact interfaces of the plurality of superconducting wires 4 become so good that a high-magnetic- field Nb-Al based superconductor capable of achieving high stability and allowing the passage of a large-capacity current can be obtained.

10. 发明专利

JPH09120723A MANUFACTURE OF SUPERCONDUCTIVE WIRE 失效
公开(公告)号：JPH09120723A
公开(公告)日：1997-05-06
申请号：JP27770195
申请日：1995-10-25
申请人： HITACHI CABLE
发明人： KODAIRA MUNEO , FURUTOKU KOICHI , IWAKI GENZO , SUZUKI YOICHI
IPC分类号： B21F19/00 , H01B12/10 , H01B13/00
摘要： PROBLEM TO BE SOLVED: To lower the rate of severance of a superconductive wire in the stretching process to a great extent by subjecting the surface of sub-element wires to a chemical polishing process, reducing thereby the thickness of the oxide film on the sub-element wire surfaces, and at the same time, precluding inclusion of foreign mater in the outer layer. SOLUTION: In manufacturing a stabilized copper matrix Nb-Ti superconductive wire, first an Nb-Ti filament is put in a copper pipe so that a single-core billet is assembled. This is extruded and stretched so that it has a hexagonal section, and the resultant is cut into one-meter lengths so that sub-element wires 4 consisting of Nb-Ti filaments 1 and copper 2 are constructed. The surfaces of these sub-element wires 4 are subjected to defatting treatment, water rinse, and a treatment with a chemical polishing liquid prepared by adding an oxidating agent such as hydrogen peroxide to a water solution of acid or alkaline nature, which is followed by another water rinse and drying. A large number of such sub-element wires 4 are set in an outer layer pipe 5 together with the copper pipe 3 so that a multi-core billet is produced, which is subjected to the specified plastic processing. Accordingly the rate of severance in the wire stretching process is lowered to a great extent.

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