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Understanding of phase separation mechanism of transition metal-base carbide during spark plasma sintering and thermal annealing and their nano-structure control

Research Project

Project/Area Number 16H04211
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Inorganic industrial materials
Research InstitutionNagaoka University of Technology (2018)
Tohoku University (2016-2017)

Principal Investigator

GOTO Takashi  長岡技術科学大学, 工学研究科, 特任教授 (60125549)

Co-Investigator(Kenkyū-buntansha) 且井 宏和  東北大学, 金属材料研究所, 特任准教授 (70610202)
李 頴  東北大学, 金属材料研究所, 助教 (40789319)
キテワン メタヤー  東北大学, 金属材料研究所, 助教 (90780528)
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥16,770,000 (Direct Cost: ¥12,900,000、Indirect Cost: ¥3,870,000)
Fiscal Year 2018: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2017: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2016: ¥8,320,000 (Direct Cost: ¥6,400,000、Indirect Cost: ¥1,920,000)
Keywordsスピーノーダル分解 / 放電プラズマ焼結 / 遷移金属炭窒化物 / 固溶体 / 超高温セラミックス / 硬さ / 破壊靱性 / スピノーダル分解 / スパークプラズマ焼結 / 熱時効 / ナノ構造制御 / 炭化チタン / 炭化ジルコニウム / 相分離 / 高温セラミックス / 非酸化物 / 組織制御 / 微細組織 / 機械的特性 / 高温材料 / 非酸化物セラミックス / ナノ構造
Outline of Final Research Achievements

High density TiC-ZrC and TiCN-ZrCN solid solutions were synthesized by spark plasma sintering at high-speed heating rate.  By succeeding heat aging the solid solutions, highly hard and ductile ceramic composites were developed by dispersing nano-sized second phases. The phase decomposition mechanism was clarified as Spinodal decomposition, and the self-aligned nanostructure caused the simultaneous improvement of hardness and fracture toughness. This study has first experimentally demonstrated the Spinodal decomposition of high-temperature transition metal carbonitrides. By substituting C by N in TiC and ZrC, the sintering temperature and decomposition temperature significantly decreased, and high hardness and ductile ceramics were developed at moderate temperatures. Spinodal decomposition was found to be useful to develop high-performance ceramics.

Academic Significance and Societal Importance of the Research Achievements

スピノーダル分解は、金属や高分子材料でよく知られた現象であるが、融点が3000Kを超す超高温セラミックスでは、状態図の形から、スピノーダル分解が理論的には予測されてはいたものの、実験的には示されていなかった。本研究により、超高温セラミックスにおいてスピノーダル分解が実証されたことは、学術的な意義が大きい。スピノーダル分解がセラミックスの力学特性の向上に有効であるかどうかは、これまで知られていなかった。超高温セラミックスのスピノーダル分解により微細組織を最適化することにより硬度、破壊靱性が同時に向上することを見出し、実用材料の開発に有効であることを示したことは、社会的意義が大きい。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • Research Products

    (13 results)

All 2018 2017 2016

All Journal Article (6 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 6 results,  Open Access: 1 results) Presentation (6 results) (of which Int'l Joint Research: 3 results,  Invited: 4 results) Book (1 results)

  • [Journal Article] Mechanical, electrical and thermal properties of ZrC-ZrB2-SiC ternary eutectic composites prepared by arc melting2018

    • Author(s)
      Rong Tu, Bing Xiao, Song Zhang, Zhao Deng, Qizhong Li, Meijun Yang, Takashi Goto, Lianmeng Zhang, Hitoshi Ohmori
    • Journal Title

      Journal of the European Ceramic Society

      Volume: 38 Issue: 11 Pages: 3759-3766

    • DOI

      10.1016/j.jeurceramsoc.2018.04.028

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Microstructure of ZrB2-ZrN directionally solidified eutectic composite by arc-melting2018

    • Author(s)
      Eric Jianfeng Cheng, Hirokazu Katsui, Takashi Goto
    • Journal Title

      Journal of Asian Ceramic Societies

      Volume: 6 Issue: 1 Pages: 102-107

    • DOI

      10.1080/21870764.2018.1446467

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] 通電加圧焼結による遷移金属炭化物の焼結と相分離2018

    • Author(s)
      且井 宏和, 李 頴, 後藤 孝
    • Journal Title

      セラミックス

      Volume: 53 Pages: 625-628

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Preparation of ZrCN-TiCN solid solutions by spark plasma sintering2017

    • Author(s)
      Ying Li, Hirokazu Katsui, Takashi Goto
    • Journal Title

      Ceramics International

      Volume: 43 Issue: 18 Pages: 16965-16971

    • DOI

      10.1016/j.ceramint.2017.09.103

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Microstructure evolution of (Ti, Zr)C solid solution at the initial stage of phase decomposition2017

    • Author(s)
      Ying Li, Hirokazu Katsui, Takashi Goto
    • Journal Title

      Materials Today: Proceedings

      Volume: 4 Issue: 11 Pages: 11449-11452

    • DOI

      10.1016/j.matpr.2017.09.026

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effect of heat treatment on the decomposition of TiC-ZrC solid solutions by spark plasma sintering2016

    • Author(s)
      Y. Li, H. Katsui, T. Goto
    • Journal Title

      Journal of the European Ceramic Society

      Volume: 36 Issue: 15 Pages: 3795-3800

    • DOI

      10.1016/j.jeurceramsoc.2016.01.039

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed
  • [Presentation] Spinodal Decomposition of ZrC-TiC System2018

    • Author(s)
      Takashi Goto, Ying Lee, Hirokazu Katsu
    • Organizer
      第二十届全国高技術陶瓷学術年会
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Ceramics Manufacturing by Spark Plasma Sintering2018

    • Author(s)
      Takashi Goto
    • Organizer
      the 10th International Conference on Materials Science and Technology
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Spinodal decomposition of TiCN-ZrCN composite prepared by SPS2018

    • Author(s)
      Takashi Goto, Ying Li, Hirokazu Katsui
    • Organizer
      Russia-Japan Joint Seminar Non-equilibrium processing of materials: experiments and modeling
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] SPSによる材料創製2017

    • Author(s)
      後藤 孝
    • Organizer
      日本セラミックス協会 東北北海道支部研究発表会
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] 放電プラズマ焼結により作製したTi‐Zr基炭窒化物の相分離挙動と微細構造変化2016

    • Author(s)
      李頴、且井宏和,後藤孝
    • Organizer
      粉体粉末冶金協会 平成28年度春季大会
    • Place of Presentation
      京都市 京都工芸繊維大学
    • Year and Date
      2016-05-24
    • Related Report
      2016 Annual Research Report
  • [Presentation] 自己組織化により特異な微細組織をもつ高温機能性セラミックスの合成2016

    • Author(s)
      且井宏和、後藤孝
    • Organizer
      学際・国際的高度人材育成ライフイノベーションマテリアル創製共同研究プロジェクト平成28 年度キックオフ公開討論会
    • Place of Presentation
      名古屋市 名古屋大学 ES館ホール
    • Related Report
      2016 Annual Research Report
  • [Book] Advances in Ceramic Matrix Composites 2nd Edition2018

    • Author(s)
      J. Zhang, R. Tu, T. Goto
    • Total Pages
      842
    • Publisher
      Woodhead Publishing
    • ISBN
      9780081021668
    • Related Report
      2018 Annual Research Report

URL: 

Published: 2016-04-21   Modified: 2020-03-30  

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