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Understanding of small particles shapes in crystalline materialswith a pseudo-polyhedral approximation

Research Project

Project/Area Number 22560657
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Physical properties of metals
Research InstitutionTokyo Institute of Technology

Principal Investigator

ONAKA Susumu  東京工業大学, 大学院・総合理工学研究科, 教授 (40194576)

Co-Investigator(Kenkyū-buntansha) KATO Masaharu  東京工業大学, 大学院・総合理工学研究科, 教授 (50161120)
FUJII Toshiyuki  東京工業大学, 大学院・総合理工学研究科, 准教授 (40251665)
Project Period (FY) 2010 – 2012
Project Status Completed (Fiscal Year 2012)
Budget Amount *help
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2011: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2010: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords表面・界面・粒界物性 / マイクロメカニックス / 組織制御 / エネルギー論 / 異相界面 / 析出物 / 平衡形状 / 擬多面体 / 界面エネルギー密度
Research Abstract

Small crystalline particles are often formed comprising near-polyhedral shapes with round edges. When near-polyhedral shapes are analyzed and discussed, it is convenient if these shapes can be expressed by equations with simple parameters. Pseudo-polyhedra are solids expressing various shapes between those of polyhedra and spheres. The pseudo-polyhedral-shape approximation is used in this study to consider the morphology of small crystalline particles. Various near-polyhedral shapes composed of crystallographically low-index planes are described using a simple equation with shape-related parameters. Cubic crystal structure particles are treated in the present study. It is shown that the pseudo-polyhedral-shape approximation is a useful geometrical tool for evaluating the morphology of small crystalline particles.

Report

(4 results)
  • 2012 Annual Research Report   Final Research Report ( PDF )
  • 2011 Annual Research Report
  • 2010 Annual Research Report
  • Research Products

    (9 results)

All 2012 2011 2010

All Journal Article (5 results) (of which Peer Reviewed: 5 results) Presentation (4 results)

  • [Journal Article] Superspherical-shape approximation to describe the morphology of small crystalline particles having near-polyhedral shapes with round edges2012

    • Author(s)
      T.Miyazawa,M.Aratake and S.Onaka
    • Journal Title

      Journal of Mathematical Chemistry

      Volume: 50 Issue: 1 Pages: 249-260

    • DOI

      10.1007/s10910-011-9909-1

    • Related Report
      2012 Final Research Report 2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Morphological and Crystallographic Characteristics of Incoherent Octahedral FCC Co Precipitates in a Cu Matrix2012

    • Author(s)
      T.Miyazawa,Y.Ozawa,Y.Miyajima,T.Fujii,S.Onaka and M.Kato
    • Journal Title

      MATERIALS TRANSACTIONS

      Volume: 53 Issue: 5 Pages: 893-901

    • DOI

      10.2320/matertrans.M2011335

    • NAID

      130004824846

    • ISSN
      1345-9678, 1347-5320
    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Superspheres:Intermediate shapes between spheres and polyhedra2012

    • Author(s)
      S.Onaka
    • Journal Title

      Symmetry

      Volume: 4 Issue: 3 Pages: 336-343

    • DOI

      10.3390/sym4030336

    • Related Report
      2012 Annual Research Report 2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Morphological and crystallographic characteristics of incoherent octahedral Coprecipitates in Cu matrix2012

    • Author(s)
      T.Miyazawa, Y.Ozawa, Y.Miyajima, T.Fujii, S.Onaka, M.Kato
    • Journal Title

      Materials Transactions

      Volume: (印刷中)(掲載決定)

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Shape and Elastic State of Nano-sized Ag Precipitates in a Cu-Ag single crystal2011

    • Author(s)
      T.Miyazawa, T.Fujii, S.Onaka, M.Kato
    • Journal Title

      Journal of Materials Science

      Volume: (In press)

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Presentation] Cu母相中に析出した非整合Co粒子における予測される平衡形状からのずれ2011

    • Author(s)
      宮澤知孝, 小澤雄太, 宮嶋陽司, 藤居俊之, 尾中晋, 加藤雅治
    • Organizer
      日本金属学会
    • Place of Presentation
      沖縄コンベンションセンター(沖縄)
    • Year and Date
      2011-11-07
    • Related Report
      2011 Annual Research Report
  • [Presentation] Growth behavior of Ag precipitates in a Cu matrix2011

    • Author(s)
      T.Miyazawa and S.Onaka
    • Organizer
      Tokyo Tech-EPFL Joint Workshop 2011
    • Place of Presentation
      Chateau-d'Oex,Switzerland
    • Related Report
      2012 Final Research Report
  • [Presentation] 加藤雅治Cu母相中に析出した非整合Co粒子における予測される平衡形状からのずれ2011

    • Author(s)
      宮澤知孝,小澤雄太,宮嶋陽司,藤居俊之,尾中晋
    • Organizer
      日本金属学会,第147回秋季大会
    • Place of Presentation
      沖縄コンベンションセンター,沖縄
    • Related Report
      2012 Final Research Report
  • [Presentation] Shape and elastic state of nano-sized Ag precipitates in a Cu-Ag single crystal2010

    • Author(s)
      T.Miyazawa,T.Fujii,S.Onaka andM.Kato
    • Organizer
      International Conference on Intergranular andInterphase Boundaries and Materials 2010 (iib2010)
    • Place of Presentation
      Mie,Japan
    • Related Report
      2012 Final Research Report

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Published: 2010-11-30   Modified: 2019-07-29  

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