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Fundtionally Graded Magnetostrictive Materials

Research Project

Project/Area Number 10650323
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Electronic materials/Electric materials
Research InstitutionDaido Institute of Technology

Principal Investigator

KUSAKA Katsushi  Daido Institute of Technology Department of Applied Electronics, Professor, 工学部, 教授 (40298477)

Co-Investigator(Kenkyū-buntansha) SUGIYAMA Akira  National Industrial Research Institute of Nagoya Materials Processing Department, Researcher, 材料プロセス部, 研究員
Project Period (FY) 1998 – 1999
Project Status Completed (Fiscal Year 1999)
Budget Amount *help
¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 1999: ¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 1998: ¥2,000,000 (Direct Cost: ¥2,000,000)
Keywordsgiant magnetostrictive / alloy / actuator / complex magnetostrictive alloy / mechanical alloying / optical magnetostrictive meter / スパークプラズマ燒結 / 磁歪特性 / 傾斜機能型磁歪材料 / ゼロ磁歪合金 / 超磁歪材料 / メカニカルアロイング(MA) / スパークプラズマ焼結(SPS)
Research Abstract

The giant magnetostrictive alloys newly developed have the brittleness peculiar to intermetallics, unfavorable for actuator's application. Here the giant magnetostrictive alloy, if combined with ductile and less magnetostrictive one by means of powder metallurgy, my possible be widely used as a functionally graded magnetostrictor of deflection-endurable type.
The experimental results obtained on this idea are summarized as follows:
1. Tb,Dy,Fe elemental powders were able to be mechanically alloyed in non-oxygen atmosphere by ball milling and then, solidified into giant magnetostrictive alloy(Tb,Dy)Fe using spark plasma sintering system.
2. An optical magnetostrictive meter was newly designed and made up for the both measurement of linear and deflective displacements in applied field(H), where the latter's accuracy was 10ィイD1-4ィエD1rad under applied field〜110kA/m.
3. For typical giant magnetostrictive ally6s(TbxDy1-x)Fey, the effect of chemical composition, powder morphology,SPS pressure/sintering conditions on magnetostrictionλ-H curves, λ/ΔH was surveyed and finally, optimized.
4. It was numerically confirmed that giant/less magnetostrictive duplex alloys deflected at right angles to applied field, together with the relationship between microscopic morphology in the interface and it's fabrication parameters.
5. For a giant/zero magnetostrictive duplex alloy, as Fe-6.5Si,deflection Δθchanged linearly with applied field(Δθ/ΔH=1.1×10ィイD1-4ィエD1rad/kAmィイD1-1ィエD1),while large ductility for lower Si region and large deflection for higher Si region are evidently expected.
Consequently, the functionally graded magnetostrictor turned out to be favorable for usage of contactless magnetic actuator(sensor).

Report

(3 results)
  • 1999 Annual Research Report   Final Research Report Summary
  • 1998 Annual Research Report
  • Research Products

    (8 results)

All Other

All Publications (8 results)

  • [Publications] 杉山明: "メカニカルアロイングを用いたTb-Dy-Fe合金の作製とその固化成形"粉体および粉末冶金. 第46巻. 648-652 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 杉山明: "MA-SPSプロセスにより作製したTb-Dy-Fe合金の磁気特性"粉体および粉末冶金. 第46巻. 1112-1108 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 草加勝司: "Fe-Si系複合磁性合金の磁気特性とSi量および焼結条件の関係"粉体および粉末冶金. 第47巻. 195-202 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Akira Sugiyama: "Synthesis of Tb-Dy-Fe-Alloy by Mechanical Alloy and its Consolidation"J.Japan Soc.Powder Met.. Vol.46. 648-652 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Akira Sugiyama: "Magnetic Properties of Tb-Dy-De Alloy Produced by MA-SPS Process"J.Japan Soc.Powder Met.. Vol.46. 1108-1112 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Katsushi Kusada: "Relationships between Magnetic Properties and Si-contents/Sintering Conditions of Fe-Si type Magnetic Alloys"J.Japan Soc.Powder Met.. Vol.47. 195-202 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 杉山明: "メカニカルアロイングを用いたTb-Dy-Fe合金の作製とその固化成形"粉体および粉末冶金. 第46巻第6号. 648-652 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 杉山明: "MA-SPSプロセスにより作製したTb-Dy-Fe合金の磁気特性"粉体および粉末冶金. 第46巻第10号. 1112-1108 (1999)

    • Related Report
      1999 Annual Research Report

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Published: 1998-04-01   Modified: 2016-04-21  

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