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Design of a cold crucible and characteristics of melting and levitating on materials with a high temperature melting

Research Project

Project/Area Number 01850149
Research Category

Grant-in-Aid for Developmental Scientific Research

Allocation TypeSingle-year Grants
Research Field 金属精錬・金属化学
Research InstitutionNagoya University

Principal Investigator

ASAI Shigeo  Nagoya University, School of Engineering Professor, 工学部, 教授 (80023274)

Co-Investigator(Kenkyū-buntansha) SASSA Kensuke  Nagoya Univ., School of Engn., Assist. Prof., 工学部, 助手 (30101166)
KUWABAWA Mamoru  Nagoya Univ., School of Engn., Assist. Prof., 工学部, 助手 (70023273)
HASEGAWA Masashi  Nagoya Univ., School of Engn., Assist. Prof., 工学部, 助手 (20218457)
金子 恭二郎  大阪チタニウム製造株式会社, 研究開発センター, 研究員
Project Period (FY) 1989 – 1991
Project Status Completed (Fiscal Year 1991)
Budget Amount *help
¥17,100,000 (Direct Cost: ¥17,100,000)
Fiscal Year 1991: ¥100,000 (Direct Cost: ¥100,000)
Fiscal Year 1990: ¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 1989: ¥15,500,000 (Direct Cost: ¥15,500,000)
KeywordsCold Crucible / Electromagnetic Processing of Materials / Plasma / Self-Propagating High Temperature Synthesis / Silicon / High Melting Point Materials / Intermetallic Compounds / Boundary Element Method / 連続鋳造 / 化学的活性材料 / 単結晶 / 電磁場理論解析 / 液体急冷
Research Abstract

1. To evaluate the effects of design parameters of a cold Crucible, a three-dimensional mathematical model was developed where the boundary element method was employed to solve the magnetic field distribution around a cold crucible system. The fundamental information for design was obtained by use of the model.
2. The new hybrid process which combines a cold crucible and a plasma was proposed. This process can melt materials such as oxide, carbide and nitride, an electric conductivity of which is relatively low in solid state but increase drastically at the melting point. Furthermore, it was found that the process was useful for melting materials with high melting point such as WC, Mo, and Nb. The relations between operating conditions of the process and physical properties were clarified by use of mathematical model developed for the process and by the experimental results.
3. Another hybrid process which combines the SHS(Self-propagating heatfront synthesis)reaction and the cold crucible are developed. By use of the process, TiAl intermetallic compound which is promising to use as the high temperature resistance materials in the future generation, could be successfully melted. The process has advantages to suppress Al vaporization by controlling the atmosphere pressure, to allow the precise control of compositions due to electromagnetic mixing and to decrease the oxygen content due to high vaporization rate of suboxides.
4. By developing a mathematical model of SHS reaction, the condition for which the heat wave can propagate in the steady state was derived.
5. A new type of the cold crucible was designed for concentrating magnetic field and its applicability to the zone melting process was studied by the ways of the theoretical analysis and the experiments.

Report

(4 results)
  • 1991 Annual Research Report   Final Research Report Summary
  • 1990 Annual Research Report
  • 1989 Annual Research Report
  • Research Products

    (23 results)

All Other

All Publications (23 results)

  • [Publications] K.Iwai: "The Theoretical Analysis of a Cold Crucible" Proc.1st Intern.Conf.on Computer Applications to Materials Science and Engineering.525-530 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] M.Kuwabara: "Theoretical Analysis of Electromagnetic Field of Induction Cold Crucible taking Account of Azimuthal Distribution" Proc.6th Intern.Iron and Steel Congress.246-253 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] K.Iwai: "Theoretical Analysis of the Magnetic Field of a Cold Crucible" Proc.Intern.Symposium on the Application of Electromagnetic Forces. 137-141 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 鈴木 健史: "コ-ルド・クル-シブルによるTiAlの溶製" 材料とプロセス. 27 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] K.Iwai: "A Hybrid Process of a Cold Crucible with a Plasma Heating" Proc.Intern.Conf.on Energy Transfer in Magnetohydrodynamic Flows.201-206 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 石崎 陽一: "帯溶融に適する連鋳型コ-ルド・クル-シブルの設計" 材料とプロセス. 30 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] K. Iwai: "The Theoretical Analysis of a Cold Crucible" Proc. 1st Intern. Conf. on Computer Applications to Materials Science and Engineering. 525-530 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] M. Kuwabawa: "Theoretical Analysis of Electromagnetic Field of Induction Cold Crucible Taking Account of Azimuthal Distribution" Proc. 6th Intern. Iron and Steel Congress. 246-253 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] K. Iwai: "Theoretical Analysis of the Magnetic Field of a Cold Crucible" Proc. Intern. Symposium on the Applications of Electromagnetic Forces. 137-141 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T. Suzuki: "Producing TiAl in Cold Crucible" Current Advances in Materials and Process. 27. (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] K. Iwai: "A Hybrid Process of a Cold Crucible with a Plasma Heating" Proc. Intern. Conf. on Energy Transfer in Magnetohydrodynamic Flows. 201-206 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Y. Ishizaki: "Design for a Continuous Casting Cold Crucible Suitable for Zone Melting" Current Advances in Materials and Process. 30. (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 石崎 陽一: "帯溶融に適する連鋳型コ-ルド・クル-シブルの設計" 日本鉄鋼協会第123回講演大会論文集.

    • Related Report
      1991 Annual Research Report
  • [Publications] 牧野 泰育: "コ-ルド・クル-シブル連鋳のプロセス解析" 日本鉄鋼協会第123回講演大会論文集.

    • Related Report
      1991 Annual Research Report
  • [Publications] K.Iwai: "A Hybrid Process of a Cold Crucible with a Plasma Heating" Proc,on the International Conference on Energy Transfer in Magnetohydrodynamic Flows. 201-206 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] K.Iwai: "The Theoretical Analysis of a Cold Crucible" Proc,of CAMSE'90.

    • Related Report
      1990 Annual Research Report
  • [Publications] K.Iwai: "Theoretical Analysis of the Magnetic Field of a Cold Crucible" Proc.of ISEMーSendai.

    • Related Report
      1990 Annual Research Report
  • [Publications] 岩井 一彦: "コ-ルド・クル-シブルに磁場解析" 日本鉄鋼協会第121回講演大会論文集.

    • Related Report
      1990 Annual Research Report
  • [Publications] 鈴木 健史: "コ-ルド・クル-シブルによるTiAlの溶製" 日本鉄鋼協会第121回講演大会論文集.

    • Related Report
      1990 Annual Research Report
  • [Publications] 鈴木 健史: "コ-ルド・クル-シブル法によるTiAlの融解・保持" 日本金属学会第107回講演大会概要集.

    • Related Report
      1990 Annual Research Report
  • [Publications] 桑原守,佐々健介,中田博道,浅井滋生: "コ-ルド・クル-シブルの周方向分布を考慮した電磁場解析" 材料とプロセス. 2. 1350 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] 佐々健介,浅井滋生: "誘導型コ-ルド・クル-シブルによる発熱速度の実測とモデル計算" 材料とプロセス. 2. 1352 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] 岩井一彦,佐々健介,浅井滋生: "コ-ルド・クル-シブルの磁場強度に及ぼすスリット幅の影響" 材料とプロセス. 3. 312 (1990)

    • Related Report
      1989 Annual Research Report

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Published: 1989-04-01   Modified: 2019-02-15  

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