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Creation of unique Nb3Sn superconducting layer diffusion reaction behavior by intermediate active layer

Research Project

Project/Area Number 18K04249
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 21050:Electric and electronic materials-related
Research InstitutionNational Institute for Materials Science

Principal Investigator

BANNO Nobuya  国立研究開発法人物質・材料研究機構, 機能性材料研究拠点, 主幹研究員 (30354301)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords超伝導材料 / 冶金学 / ニオブスズ / 拡散反応 / 結晶組織 / 磁束ピンニング / 元素添加 / Nb3Sn / 相互拡散 / Ti-Sn化合物 / カーケンダルボイド / 結晶粒 / 化学量論組成 / β-CuZn層 / 化学量論性 / Zn添加 / Ge添加 / Mg添加 / 固相拡散 / 核融合炉 / 加速器 / NMR
Outline of Final Research Achievements

In order to achieve a breakthrough in the performance of Nb3Sn superconductors, we aimed to discover a "unique" Nb3Sn diffusion reaction phenomenon using an intermediate Cu-X active layer, which will lead to the creation of new functions. Zn, Ge, and Mg were examined as the X element. It was clarified that the effect of suppressing grain coarsening was observed in all of Zn, Ge, and Mg additions, and that the effect of grain refinement was further enhanced by the simultaneous addition of Zn and Mg. It was also found that the addition of Zn specifically formed a β-CuZn layer at the diffusion reaction interface, which contributes to significantly suppress voids. Studies on the location of Ti addition revealed that when Ti was added to the matrix, the Ti-Sn compound was refined and the diffusion of Sn in the Cu matrix was promoted.

Academic Significance and Societal Importance of the Research Achievements

Nb3Sn超伝導体の組織制御に、新たな”自由度”を与える研究である。性能向上により、NMRや核融合炉、粒子加速器の高度化に貢献する。特に性能向上による強磁場NMR装置のコンパクト化は、市場への貢献が大きい。またNb3Snは臨界温度が18Kとヘリウム温度より10K以上高いので、今後需要の拡大が見込まれる医療用HeフリーMRIなどへの普及も期待される。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (25 results)

All 2020 2019 2018 Other

All Int'l Joint Research (1 results) Journal Article (7 results) (of which Peer Reviewed: 6 results) Presentation (15 results) (of which Int'l Joint Research: 5 results,  Invited: 1 results) Remarks (1 results) Patent(Industrial Property Rights) (1 results)

  • [Int'l Joint Research] 西南交通大学(中国)

    • Related Report
      2018 Research-status Report
  • [Journal Article] Fabrication of New Internal Tin Nb3Sn Wire Using Sn-Zn Alloy as Sn Core2020

    • Author(s)
      Morita Taro、Yagai Tsuyoshi、Banno Nobuya
    • Journal Title

      IEEE Transactions on Applied Superconductivity

      Volume: 30 Issue: 4 Pages: 1-5

    • DOI

      10.1109/tasc.2020.2971451

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Fundamental Study on the Effect of Zn Addition Into Cu Matrix in DT Method Nb3Sn Conductors2020

    • Author(s)
      Banno Nobuya、Morita Taro、Yagai Tsuyoshi、Kawashima Shinya、Murakami Yukinobu
    • Journal Title

      IEEE Transactions on Applied Superconductivity

      Volume: 30 Issue: 4 Pages: 1-5

    • DOI

      10.1109/tasc.2020.2972209

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Microstructural study on Sn-Zn/Cu-Ti diffusion reaction for internal tin Nb3Sn conductor development2020

    • Author(s)
      Morita Taro、Yagai Tsuyoshi、Banno Nobuya
    • Journal Title

      Journal of Alloys and Compounds

      Volume: 848 Pages: 155465-155465

    • DOI

      10.1016/j.jallcom.2020.155465

    • Related Report
      2020 Annual Research Report
  • [Journal Article] New Microstructure Control for Internal Tin Processed Nb<sub>3</sub>Sn Wires through Element Addition to Matrix2019

    • Author(s)
      Banno Nobuya、Morita Taro、Yu Zhou、Yagai Tsuyoshi、Tachikawa Kyoji
    • Journal Title

      Journal of the Japan Institute of Metals and Materials

      Volume: 83 Issue: 9 Pages: 305-313

    • DOI

      10.2320/jinstmet.JA201903

    • NAID

      130007695349

    • ISSN
      0021-4876, 1880-6880, 2433-7501
    • Year and Date
      2019-09-01
    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Microstructure and Superconducting Properties of Brass Matrix Internal Tin Nb3Sn Wire With Ti Doping to Nb Core2019

    • Author(s)
      Morita Taro、Banno Nobuya、Yagai Tsuyoshi、Tachikawa Kyoji
    • Journal Title

      IEEE Transactions on Applied Superconductivity

      Volume: 29 Issue: 5 Pages: 1-5

    • DOI

      10.1109/tasc.2019.2910020

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Effect of Zn addition and Ti doping position on the diffusion reaction of internal tin Nb3Sn conductors2019

    • Author(s)
      Banno Nobuya、Morita Taro、Yu Zhou、Yagai Tsuyoshi、Tachikawa Kyoji
    • Journal Title

      Superconductor Science and Technology

      Volume: 32 Issue: 11 Pages: 115017-115017

    • DOI

      10.1088/1361-6668/ab4632

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] The effects of Mg doping on the microstructure and transport properties of internal tin-processed brass matrix Nb3Sn superconductors2019

    • Author(s)
      Yu Zhou、Banno Nobuya、Zhao Yong、Tachikawa Kyoji
    • Journal Title

      Superconductor Science and Technology

      Volume: 32 Issue: 3 Pages: 035003-035003

    • DOI

      10.1088/1361-6668/aaf61a

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] Nb-Ta-HfとCu-Snとの拡散反応によるNb3Sn層の生成2020

    • Author(s)
      伴野信哉, 森田太郎, 谷貝剛
    • Organizer
      第99回春季低温工学・超電導学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Sn-Zn/Cu-Ti/Nb拡散対構造を用いた内部スズ法 Nb3Sn線材における微細組織と超伝導特性2020

    • Author(s)
      森田 太郎, 谷貝 剛, 伴野 信哉
    • Organizer
      第99回春季低温工学・超電導学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 内部スズ法構造Nb3Sn拡散対へのZn添加量が Nb3Sn微細組織や超伝導特性に与える影響2020

    • Author(s)
      森田 太郎, 谷貝 剛, 伴野 信哉
    • Organizer
      第100回秋季低温工学・超電導学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Nb-Ta-Hf/Cu-Sn拡散反応におけるNb3Sn結晶粒微細化メカニズムに 関する基礎的研究2020

    • Author(s)
      伴野信哉, 森田太郎, 谷貝剛
    • Organizer
      第100回秋季低温工学・超電導学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Attempt of Hf addition to internal-tin process Nb3Sn wire2020

    • Author(s)
      Nobuya Banno, Taro Morita, Tsuyoshi Yagai
    • Organizer
      10th ACASC - 2nd Asian ICMC - CSSJ
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Microstructural study on internal tin Nb3Sn wire with Sn-Zn/Cu-Ti/Nb structure2020

    • Author(s)
      Taro Morita, Tsuyoshi Yagai, Nobuya Banno
    • Organizer
      10th ACASC - 2nd Asian ICMC - CSSJ
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Fundamental study on the effect of Zn addition into Cu matrix in DT method Nb3Sn conductors2019

    • Author(s)
      Nobuya Banno, Taro Morita, Tsuyoshi Yagai, Shinya Kawashima, Nobuyuki Murakami
    • Organizer
      26th International Conference on Magnet Technology
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Fabrication of new internal tin Nb3Sn wire using Sn-Zn alloy as Sn core2019

    • Author(s)
      Taro Morita, Tsuyoshi Yagai, Nobuya Banno
    • Organizer
      26th International Conference on Magnet Technology
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 内部拡散法Nb3Sn線材におけるZn添加の効果2019

    • Author(s)
      伴野信哉, 森田太郎, 谷貝剛
    • Organizer
      2019年度春季低温工学・超電導学会
    • Related Report
      2019 Research-status Report
  • [Presentation] Sn-Zn/Cu-Ti層拡散反応2019

    • Author(s)
      森田太郎, 谷貝剛, 伴野信哉
    • Organizer
      2019年度春季低温工学・超電導学会
    • Related Report
      2019 Research-status Report
  • [Presentation] Influence of Ti-doping mode on microstructure and superconducting characteristics of brass matrix internal-tin Nb3Sn wires2018

    • Author(s)
      伴野信哉
    • Organizer
      Applied Superconductivity Conference 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] ブラス母材内部拡散法Nb3Sn線材におけるZn量およびNb芯径の影響2018

    • Author(s)
      伴野信哉
    • Organizer
      2019年度秋季第97回 低温工学・超電導学会研究発表会
    • Related Report
      2018 Research-status Report
  • [Presentation] ブラス法内部スズ法Nb3Sn線材におけるTiドープモードが微細組織と超伝導特性に与える影響2018

    • Author(s)
      森田太郎
    • Organizer
      2019年度秋季第97回 低温工学・超電導学会研究発表会
    • Related Report
      2018 Research-status Report
  • [Presentation] Nb芯へTi添加したブラス母材内部スズ法Nb3Sn線材の結晶組織と超伝導特性2018

    • Author(s)
      森田太郎
    • Organizer
      2019年度春季第96回 低温工学・超電導学会研究発表会
    • Related Report
      2018 Research-status Report
  • [Presentation] 2019年度秋季第97回 低温工学・超電導学会研究発表会2018

    • Author(s)
      伴野信哉
    • Organizer
      ブラス母材内部拡散法Nb3Sn線材におけるTiドープモードの影響
    • Related Report
      2018 Research-status Report
  • [Remarks] NIMS研究者総覧SAMURAIー伴野信哉ー

    • URL

      https://samurai.nims.go.jp/profiles/banno_nobuya/publications

    • Related Report
      2019 Research-status Report
  • [Patent(Industrial Property Rights)] Nb3Sn超伝導線材用前駆体、その製造方法、および、それを用いたNb3Sn超伝導線材の製造方法2019

    • Inventor(s)
      伴野信哉
    • Industrial Property Rights Holder
      国立研究開発法人物質・材料研究機構
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2019-145017
    • Filing Date
      2019
    • Related Report
      2019 Research-status Report

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Published: 2018-04-23   Modified: 2022-01-27  

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