JP2009507358A5 - - Google Patents
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- Publication number
- JP2009507358A5 JP2009507358A5 JP2008535523A JP2008535523A JP2009507358A5 JP 2009507358 A5 JP2009507358 A5 JP 2009507358A5 JP 2008535523 A JP2008535523 A JP 2008535523A JP 2008535523 A JP2008535523 A JP 2008535523A JP 2009507358 A5 JP2009507358 A5 JP 2009507358A5
- Authority
- JP
- Japan
- Prior art keywords
- oxide
- nanoparticles
- phase
- superconductor
- containing compound
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002887 superconductor Substances 0.000 description 5
- 239000002105 nanoparticle Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- -1 BaZrO 3 Chemical compound 0.000 description 1
- 239000005751 Copper oxide Substances 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910000431 copper oxide Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- VXPLXMJHHKHSOA-UHFFFAOYSA-N propham Chemical compound CC(C)OC(=O)NC1=CC=CC=C1 VXPLXMJHHKHSOA-UHFFFAOYSA-N 0.000 description 1
- 239000002096 quantum dot Substances 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US70381505P | 2005-07-29 | 2005-07-29 | |
| PCT/US2006/029684 WO2008036073A2 (en) | 2005-07-29 | 2006-07-28 | High temperature superconducting wires and coils |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2009507358A JP2009507358A (ja) | 2009-02-19 |
| JP2009507358A5 true JP2009507358A5 (enExample) | 2014-03-20 |
Family
ID=39201005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2008535523A Pending JP2009507358A (ja) | 2005-07-29 | 2006-07-28 | 高温超電導ワイヤ及びコイル |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US7781376B2 (enExample) |
| EP (1) | EP1925040B1 (enExample) |
| JP (1) | JP2009507358A (enExample) |
| KR (1) | KR101441139B1 (enExample) |
| CN (1) | CN101512829B (enExample) |
| AU (1) | AU2006346993B8 (enExample) |
| CA (1) | CA2622384C (enExample) |
| ES (1) | ES2553261T3 (enExample) |
| RU (1) | RU2414769C2 (enExample) |
| WO (1) | WO2008036073A2 (enExample) |
Families Citing this family (55)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7674751B2 (en) * | 2006-01-10 | 2010-03-09 | American Superconductor Corporation | Fabrication of sealed high temperature superconductor wires |
| JP4959213B2 (ja) * | 2006-03-31 | 2012-06-20 | 三菱重工業株式会社 | 遮熱コーティング部材及びその製造方法ならびに遮熱コート材料、ガスタービン及び焼結体 |
| US7902120B2 (en) | 2006-07-24 | 2011-03-08 | American Superconductor Corporation | High temperature superconductors having planar magnetic flux pinning centers and methods for making the same |
| WO2008015941A1 (fr) * | 2006-08-02 | 2008-02-07 | The Furukawa Electric Co., Ltd. | Fil supraconducteur composite, procédé de fabrication associé, et câble supraconducteur |
| JP4643522B2 (ja) * | 2006-08-23 | 2011-03-02 | 財団法人国際超電導産業技術研究センター | テープ状厚膜ｙｂｃｏ超電導体の製造方法 |
| JP4268645B2 (ja) * | 2007-02-26 | 2009-05-27 | 財団法人国際超電導産業技術研究センター | 希土類系テープ状酸化物超電導体及びそれに用いる複合基板 |
| JP5027054B2 (ja) * | 2008-05-30 | 2012-09-19 | 公益財団法人国際超電導産業技術研究センター | Ｙ系酸化物超電導線材 |
| DE102008028588A1 (de) | 2008-06-18 | 2009-12-24 | Schaeffler Kg | Magnetlager mit Hochtemperatur-Supraleiterelementen |
| JP5405069B2 (ja) * | 2008-08-14 | 2014-02-05 | 公益財団法人国際超電導産業技術研究センター | テープ状酸化物超電導体及びそれに用いる基板 |
| JP2010129465A (ja) * | 2008-11-28 | 2010-06-10 | Sumitomo Electric Ind Ltd | 複合型超電導線 |
| KR100995907B1 (ko) * | 2008-12-03 | 2010-11-22 | 한국전기연구원 | 초전도 박막 선재를 이용한 원형 와이어의 제조방법 및 그 초전도 박막 선재를 이용한 원형 와이어 |
| DE102009009127A1 (de) | 2009-02-17 | 2010-09-16 | Schaeffler Technologies Gmbh & Co. Kg | Spule für ein supraleitendes Magnetlager |
| JP2010238943A (ja) * | 2009-03-31 | 2010-10-21 | Furukawa Electric Co Ltd:The | 限流器 |
| DE102009018061B4 (de) * | 2009-04-20 | 2013-09-05 | Siemens Aktiengesellschaft | Supraleitende Spule, insbesondere für ein Magnetresonanzgerät, sowie Vergussmasse, insbesondere für die Herstellung einer supraleitenden Spule |
| JP5096422B2 (ja) | 2009-07-10 | 2012-12-12 | 住友電気工業株式会社 | 基板および超電導線材の製造方法 |
| DE102009038920A1 (de) * | 2009-08-26 | 2011-03-10 | Siemens Aktiengesellschaft | Multifilamentleiter und Verfahren zu dessen Herstellung |
| US8759257B2 (en) * | 2009-10-02 | 2014-06-24 | Ambature, Inc. | High temperature superconducting films and methods for modifying and creating same |
| US20110082045A1 (en) * | 2009-10-02 | 2011-04-07 | Gilbert Douglas J | Extremely low resistance materials and methods for modifying and creating same |
| JP5517196B2 (ja) * | 2009-11-20 | 2014-06-11 | 東洋鋼鈑株式会社 | 超電導化合物用基板及びその製造方法 |
| EP2511917B1 (en) * | 2009-12-08 | 2018-11-14 | Nippon Steel & Sumitomo Metal Corporation | Oxide superconducting bulk magnet member |
| KR20130065637A (ko) * | 2010-04-21 | 2013-06-19 | 가부시키가이샤후지쿠라 | 산화물 초전도 도체 및 그 제조 방법 |
| EP2487731A1 (en) * | 2011-02-10 | 2012-08-15 | Nexans | Composite with coated conductor |
| JP5477395B2 (ja) * | 2012-01-12 | 2014-04-23 | 住友電気工業株式会社 | 酸化物超電導薄膜とその製造方法および酸化物超電導薄膜線材 |
| WO2013153973A1 (ja) * | 2012-04-10 | 2013-10-17 | 住友電気工業株式会社 | 補強材付き酸化物超電導線材 |
| EP2859560B1 (en) * | 2012-06-12 | 2021-11-24 | University of Houston System | Superconductor article with directional flux pinning |
| US10068688B2 (en) | 2012-07-05 | 2018-09-04 | University Of Houston System | Superconducting article with compliant layers |
| KR101410841B1 (ko) * | 2012-11-26 | 2014-06-23 | 한국전기연구원 | 고온 초전도 선재 |
| CN103086722B (zh) * | 2013-01-31 | 2015-04-15 | 清华大学 | 高温超导膜的制备方法 |
| JP5591966B2 (ja) * | 2013-02-28 | 2014-09-17 | 公益財団法人国際超電導産業技術研究センター | 酸化物超電導体用組成物、及び酸化物超電導線材の製造方法 |
| RU2557378C2 (ru) * | 2013-03-21 | 2015-07-20 | Федеральное государственное унитарное предприятие "Московский завод по обработке специальных сплавов" | Способ получения многослойной проволоки |
| KR101556562B1 (ko) | 2013-06-28 | 2015-10-02 | 한국전기연구원 | 라미네이트 구조를 갖는 초전도 선재 그 제조방법 |
| CN103367626B (zh) * | 2013-07-02 | 2015-08-12 | 西北有色金属研究院 | 一种涂层导体超导膜及其制备方法 |
| EP2843721B1 (en) | 2013-09-03 | 2015-11-04 | Nexans | Superconductor coil arrangement |
| EP2983218B2 (en) * | 2014-08-06 | 2023-10-18 | Karlsruher Institut für Technologie | Design of superconducting devices by optimization of the superconductor's local critical current |
| EP2991126B1 (de) * | 2014-08-25 | 2016-10-05 | Theva Dünnschichttechnik GmbH | Verfahren und Vorrichtung zum Herstellen eines Hochtemperatur-Supraleiters |
| JP6056877B2 (ja) | 2015-01-07 | 2017-01-11 | 三菱マテリアル株式会社 | 超伝導線、及び、超伝導コイル |
| JP6419596B2 (ja) * | 2015-02-13 | 2018-11-07 | 株式会社東芝 | 薄膜線材の接続構造、その接続構造を用いた高温超電導線材およびその接続構造を用いた高温超電導コイル |
| CN104835908A (zh) * | 2015-04-17 | 2015-08-12 | 上海华虹宏力半导体制造有限公司 | 用于3d amr的氮化钽刻蚀方法 |
| JP6374365B2 (ja) * | 2015-09-16 | 2018-08-15 | 株式会社東芝 | 酸化物超電導体、およびその製造方法 |
| CN105551681B (zh) * | 2016-02-05 | 2017-03-29 | 上海上创超导科技有限公司 | 一种钡铜氧高温超导涂层导体的多层结构 |
| JP6299802B2 (ja) | 2016-04-06 | 2018-03-28 | 三菱マテリアル株式会社 | 超伝導安定化材、超伝導線及び超伝導コイル |
| CN107978394A (zh) * | 2016-10-25 | 2018-05-01 | 上海新昇半导体科技有限公司 | 超导带及其制造方法 |
| KR102355577B1 (ko) * | 2017-03-09 | 2022-01-25 | 스미토모 덴키 고교 가부시키가이샤 | 산화물 초전도 박막 재료, 산화물 초전도 박막 선재 및 산화물 초전도 박막의 제조 방법 |
| US10804010B2 (en) * | 2017-05-12 | 2020-10-13 | American Superconductor Corporation | High temperature superconducting wires having increased engineering current densities |
| KR102548029B1 (ko) * | 2017-10-30 | 2023-06-26 | 미쓰비시 마테리알 가부시키가이샤 | 초전도 안정화재, 초전도선 및 초전도 코일 |
| US11167375B2 (en) | 2018-08-10 | 2021-11-09 | The Research Foundation For The State University Of New York | Additive manufacturing processes and additively manufactured products |
| GB201814357D0 (en) * | 2018-09-04 | 2018-10-17 | Tokamak Energy Ltd | Alignment of HTS tapes |
| DE102019211478A1 (de) | 2019-07-31 | 2021-02-04 | Bruker Switzerland Ag | Magnetspulensektion mit integrierten Joints, insbesondere HTS-LTS-Joints, und zugehörige Magnetanordnung |
| EP4070392A4 (en) * | 2019-12-05 | 2024-01-03 | D-Wave Systems Inc. | Systems and methods for fabricating superconducting integrated circuits |
| EP3840071A1 (en) | 2019-12-19 | 2021-06-23 | Bruker HTS GmbH | Method for manufacturing of a high temperature superconductor tape |
| JP2023529366A (ja) * | 2020-06-01 | 2023-07-10 | ユーエス メタルズ リファイニング グループ インコーポレイテッド | 磁性材料の製造 |
| CN113774348B (zh) * | 2021-09-22 | 2023-06-02 | 季华实验室 | 一种具有非晶氧化钒薄膜的高温超导体及其制备方法和高温超导线圈 |
| CN116322281A (zh) * | 2023-03-21 | 2023-06-23 | 核工业西南物理研究院 | 一种利于提高超导载流性能的处理方法、超导层、超导材料 |
| JP7725517B2 (ja) * | 2023-03-22 | 2025-08-19 | 株式会社東芝 | 超電導線材、超電導コイル、超電導磁石、超電導モータ、超電導発電機、超電導航空機、及び、超電導機器 |
| CN116682612A (zh) * | 2023-08-03 | 2023-09-01 | 西安聚能超导线材科技有限公司 | 一种增强青铜法Nb3Sn超导线材的制备方法 |
Family Cites Families (43)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5047389A (en) | 1988-10-31 | 1991-09-10 | General Atomics | Substrate for ceramic superconductor |
| US5231074A (en) | 1990-04-17 | 1993-07-27 | Massachusetts Institute Of Technology | Preparation of highly textured oxide superconducting films from mod precursor solutions |
| JPH05894A (ja) * | 1990-06-28 | 1993-01-08 | Sumitomo Electric Ind Ltd | 複合酸化物超電導薄膜 |
| JPH05266726A (ja) * | 1992-03-19 | 1993-10-15 | Mitsubishi Cable Ind Ltd | 酸化物超電導線 |
| US5525583A (en) | 1994-01-24 | 1996-06-11 | American Superconductor Corporation | Superconducting magnetic coil |
| JP3195886B2 (ja) * | 1994-12-06 | 2001-08-06 | 三菱電機株式会社 | 酸化物超電導膜及びその製造方法 |
| JPH09223418A (ja) * | 1996-02-19 | 1997-08-26 | Mitsubishi Electric Corp | 酸化物超電導線材及びその製造方法 |
| US5987342A (en) | 1996-08-30 | 1999-11-16 | American Superconductor Corporation | Laminated superconducting ceramic tape |
| JP3289134B2 (ja) * | 1997-02-28 | 2002-06-04 | 独立行政法人産業技術総合研究所 | 不確定性原理に基づく低異方性高温超伝導体とその製造方法 |
| US6022832A (en) | 1997-09-23 | 2000-02-08 | American Superconductor Corporation | Low vacuum vapor process for producing superconductor articles with epitaxial layers |
| US6027564A (en) | 1997-09-23 | 2000-02-22 | American Superconductor Corporation | Low vacuum vapor process for producing epitaxial layers |
| WO1999017307A1 (en) * | 1997-10-01 | 1999-04-08 | American Superconductor Corporation | Substrates with improved oxidation resistance |
| US6002951A (en) | 1997-11-12 | 1999-12-14 | International Business Machines Corporation | Multi-layer ceramic substrate having high TC superconductor circuitry |
| US6190752B1 (en) | 1997-11-13 | 2001-02-20 | Board Of Trustees Of The Leland Stanford Junior University | Thin films having rock-salt-like structure deposited on amorphous surfaces |
| CA2315081A1 (en) | 1997-12-19 | 1999-07-01 | Gunter Ries | Superconductor construction with high tc superconductor material, process for producing the construction, and current limiter device having such a construction |
| US6657533B2 (en) | 1998-11-25 | 2003-12-02 | American Semiconductor Corporation | Superconducting conductors and their method of manufacture |
| JP3912890B2 (ja) * | 1998-03-27 | 2007-05-09 | Ｄｏｗａホールディングス株式会社 | 酸化物超電導体積層体およびその製造方法 |
| EP1126971A2 (en) * | 1998-09-14 | 2001-08-29 | The Regents of The University of California | Superconducting structure including mixed rare earth barium-copper compositions |
| US6436317B1 (en) | 1999-05-28 | 2002-08-20 | American Superconductor Corporation | Oxide bronze compositions and textured articles manufactured in accordance therewith |
| CN1364321B (zh) * | 1999-07-23 | 2010-06-02 | 美国超导体公司 | 多层制品及其制造方法 |
| US6828507B1 (en) * | 1999-07-23 | 2004-12-07 | American Superconductor Corporation | Enhanced high temperature coated superconductors joined at a cap layer |
| US6765151B2 (en) * | 1999-07-23 | 2004-07-20 | American Superconductor Corporation | Enhanced high temperature coated superconductors |
| US6444917B1 (en) | 1999-07-23 | 2002-09-03 | American Superconductor Corporation | Encapsulated ceramic superconductors |
| WO2001015245A1 (en) | 1999-08-24 | 2001-03-01 | Electric Power Research Institute, Inc. | Surface control alloy substrates and methods of manufacture therefor |
| US6974501B1 (en) | 1999-11-18 | 2005-12-13 | American Superconductor Corporation | Multi-layer articles and methods of making same |
| US6383989B2 (en) * | 2000-06-21 | 2002-05-07 | The Regents Of The University Of California | Architecture for high critical current superconducting tapes |
| US6624122B1 (en) | 2000-06-21 | 2003-09-23 | The Regents Of The University Of California | High critical current superconducting tapes |
| JP2001247311A (ja) * | 2001-01-15 | 2001-09-11 | Natl Inst Of Advanced Industrial Science & Technology Meti | 不確定性原理に基づく低異方性高温超伝導体とその製造方法 |
| JP2001233614A (ja) * | 2001-01-15 | 2001-08-28 | Natl Inst Of Advanced Industrial Science & Technology Meti | 不確定性原理に基づく低異方性高温超伝導体とその製造方法 |
| JP2005516882A (ja) | 2001-07-31 | 2005-06-09 | アメリカン スーパーコンダクター コーポレイション | 超電導体の作製方法及び反応装置 |
| JP4771632B2 (ja) | 2001-10-12 | 2011-09-14 | 富士通株式会社 | 高温超伝導体膜の形成方法 |
| US6716545B1 (en) | 2001-11-21 | 2004-04-06 | The Regents Of The University Of California | High temperature superconducting composite conductors |
| US6745059B2 (en) | 2001-11-28 | 2004-06-01 | American Superconductor Corporation | Superconductor cables and magnetic devices |
| JP3725085B2 (ja) | 2002-03-05 | 2005-12-07 | 株式会社東芝 | 超電導層及びその製造方法 |
| JP4521693B2 (ja) | 2002-12-04 | 2010-08-11 | 住友電気工業株式会社 | 高温超電導厚膜部材およびその製造方法 |
| US20050065035A1 (en) | 2003-06-10 | 2005-03-24 | Rupich Martin W. | Superconductor methods and reactors |
| US20040266628A1 (en) | 2003-06-27 | 2004-12-30 | Superpower, Inc. | Novel superconducting articles, and methods for forming and using same |
| US7286032B2 (en) * | 2003-07-10 | 2007-10-23 | Superpower, Inc. | Rare-earth-Ba-Cu-O superconductors and methods of making same |
| US20050159298A1 (en) * | 2004-01-16 | 2005-07-21 | American Superconductor Corporation | Oxide films with nanodot flux pinning centers |
| US7496390B2 (en) | 2004-08-20 | 2009-02-24 | American Superconductor Corporation | Low ac loss filamentary coated superconductors |
| US7463915B2 (en) | 2004-08-20 | 2008-12-09 | American Superconductor Corporation | Stacked filamentary coated superconductors |
| US7816303B2 (en) | 2004-10-01 | 2010-10-19 | American Superconductor Corporation | Architecture for high temperature superconductor wire |
| EP1805817B1 (en) | 2004-10-01 | 2016-11-16 | American Superconductor Corporation | Thick superconductor films with improved performance |
-
2006
- 2006-07-28 KR KR1020087005094A patent/KR101441139B1/ko active Active
- 2006-07-28 AU AU2006346993A patent/AU2006346993B8/en not_active Ceased
- 2006-07-28 RU RU2008107766/28A patent/RU2414769C2/ru active
- 2006-07-28 CN CN200680035136XA patent/CN101512829B/zh not_active Expired - Fee Related
- 2006-07-28 WO PCT/US2006/029684 patent/WO2008036073A2/en not_active Ceased
- 2006-07-28 JP JP2008535523A patent/JP2009507358A/ja active Pending
- 2006-07-28 EP EP06851624.4A patent/EP1925040B1/en active Active
- 2006-07-28 US US11/494,993 patent/US7781376B2/en active Active
- 2006-07-28 CA CA2622384A patent/CA2622384C/en active Active
- 2006-07-28 ES ES06851624.4T patent/ES2553261T3/es active Active
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