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Atomistic grain boundary migration mechanism studied based on direct STEM observation

Research Project

Project/Area Number 22K14463
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 26010:Metallic material properties-related
Research InstitutionThe University of Tokyo

Principal Investigator

Feng Bin  東京大学, 大学院工学系研究科(工学部), 特任准教授 (20811889)

Project Period (FY) 2022-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2023: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2022: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Keywords粒界移動 / 原子分解能直接観察 / セラミックス / STEM / 原子分解能電子顕微鏡 / 電子顕微鏡 / その場観察 / 原子分解能
Outline of Research at the Start

粒界移動現象は材料科学において重要な課題であり、材料の微細組織の形成を支配するのみならず、様々な特性にも直接関連していることが報告されている。本研究では先端原子分解能走査透過型電子顕微鏡法を高度化し、セラミックス粒界移動過程の直接観察法を確立するとともに、多様なセラミックス材料に展開することで、セラミックス粒界移動のメカニズムの本質的解明を目指す。

Outline of Final Research Achievements

Grain boundary migration has been reported to govern material properties such as microstructure formation and mechanical characteristics of bulk materials. However, its atomistic mechanism remains unclear. In this study, we employed a direct observation method of grain boundary migration using a scanning transmission electron microscope (STEM) developed by our research group, to directly observe the grain boundary migration processes at the atomic level in various ceramic materials, and thereby elucidating the fundamental grain boundary migration mechanism. We fabricated symmetrical tilt grain boundaries and doped model grain boundaries in various materials using the bicrystal method, and performed direct observations of their grain boundary migration. Based on these results, we clarified the impact of grain boundary atomic structures and dopant effects on grain boundary migration.

Academic Significance and Societal Importance of the Research Achievements

本研究は、これまでブラックボックスであったセラミックス粒界の移動過程を実験的に原子レベルで解明した。その結果、粒界移動が粒界の原子構造に強く依存することが明らかになった。整合性の高い粒界では、粒界原子多面体構造の逐次変化によって移動が進行する。一方、整合性の低い粒界では、粒界移動中に構造が変化せず、界面欠陥の形成を伴う移動メカニズムで進行することが判明した。さらに、Tiなどの不純物の偏析が粒界移動を妨げる効果があることも明らかになった。これらの知見を活用することで、今後高性能セラミックス材料の設計に大きく貢献することが期待される。

Report

(3 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • Research Products

    (36 results)

All 2024 2023 2022

All Journal Article (14 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 14 results,  Open Access: 4 results) Presentation (22 results) (of which Int'l Joint Research: 9 results,  Invited: 8 results)

  • [Journal Article] The atomic and electronic band structures in Ca/Si-doped and Ca/Si/Ti-doped Al2O3 grain boundaries2024

    • Author(s)
      Yang Chuchu、Feng Bin、Futazuka Toshihiro、Wei Jiake、Shibata Naoya、Ikuhara Yuichi
    • Journal Title

      Journal of the European Ceramic Society

      Volume: 44 Issue: 2 Pages: 1005-1011

    • DOI

      10.1016/j.jeurceramsoc.2023.09.011

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Dopant-impurity interactions on grain boundary segregation in alumina2024

    • Author(s)
      Yang Chuchu、Feng Bin、Wei Jiake、Shibata Naoya、Ikuhara Yuichi
    • Journal Title

      Journal of Materials Science & Technology

      Volume: 181 Pages: 58-62

    • DOI

      10.1016/j.jmst.2023.08.066

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Nanoscale Localized Phonons at Al2O3Grain Boundaries2024

    • Author(s)
      Yan Jingyuan、Shi Ruochen、Wei Jiake、Li Yuehui、Qi Ruishi、Wu Mei、Li Xiaomei、Feng Bin、Gao Peng、Shibata Naoya、Ikuhara Yuichi
    • Journal Title

      Nano Letters

      Volume: 24 Issue: 11 Pages: 3323-3330

    • DOI

      10.1021/acs.nanolett.3c04149

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The effect of annealing atmospheres on the segregation behaviors in Ti-doped α-Al<sub>2</sub>O<sub>3</sub> grain boundary2023

    • Author(s)
      Yang Chuchu、Feng Bin、Shibata Naoya、Ikuhara Yuichi
    • Journal Title

      Journal of the Ceramic Society of Japan

      Volume: 131 Issue: 10 Pages: 608-612

    • DOI

      10.2109/jcersj2.23054

    • ISSN
      1348-6535, 1882-0743
    • Year and Date
      2023-10-01
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Direct observation of intrinsic core structure of a partial dislocation in ZnS2023

    • Author(s)
      Feng Bin、Hoshino Sena、Miao Bin、Wei Jiake、Ogura Yu、Nakamura Atsutomo、Tochigi Eita、Matsunaga Katsuyuki、Ikuhara Yuichi、Shibata Naoya
    • Journal Title

      Journal of the Ceramic Society of Japan

      Volume: 131 Issue: 10 Pages: 659-664

    • DOI

      10.2109/jcersj2.23065

    • ISSN
      1348-6535, 1882-0743
    • Year and Date
      2023-10-01
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Solid‐State Electrochemical Thermal Transistors2023

    • Author(s)
      Yang Qian、Cho Hai Jun、Bian Zhiping、Yoshimura Mitsuki、Lee Joonhyuk、Jeen Hyoungjeen、Lin Jinghuang、Wei Jiake、Feng Bin、Ikuhara Yuichi、Ohta Hiromichi
    • Journal Title

      Advanced Functional Materials

      Volume: - Issue: 19 Pages: 2214939-2214939

    • DOI

      10.1002/adfm.202214939

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Atomistic grain boundary migration in Al2O32023

    • Author(s)
      Feng Bin、Wei Jiake、Shibata Naoya、Ikuhara Yuichi
    • Journal Title

      International Journal of Ceramic Engineering & Science

      Volume: 5 Issue: 1

    • DOI

      10.1002/ces2.10169

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Atomic and electronic structure of grain boundaries in a-Al2O3: A combination of machine learning, first-principles calculation and electron microscopy2023

    • Author(s)
      Yokoi T.、Hamajima A.、Wei J.、Feng B.、Oshima Y.、Matsunaga K.、Shibata N.、Ikuhara Y.
    • Journal Title

      Scripta Materialia

      Volume: 229 Pages: 115368-115368

    • DOI

      10.1016/j.scriptamat.2023.115368

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Ion diffusion across/along symmetric tilt grain boundaries in yttria-stabilized zirconia investigated by molecular dynamics simulations2023

    • Author(s)
      Ikeda Susumu、Feng Bin、Shibata Naoya、Ikuhara Yuichi
    • Journal Title

      Solid State Ionics

      Volume: 392 Pages: 116163-116163

    • DOI

      10.1016/j.ssi.2023.116163

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Crystal Defect Core Studied by Advanced Electron Microscopy2022

    • Author(s)
      Feng Bin、Wei Jiake、Ishikawa Ryo、Seki Takehito、Shibata Naoya、Ikuhara Yuichi
    • Journal Title

      Materia Japan

      Volume: 61 Issue: 10 Pages: 640-644

    • DOI

      10.2320/materia.61.640

    • ISSN
      1340-2625, 1884-5843
    • Year and Date
      2022-10-01
    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Enhanced high-temperature volume resistivity of AlN by doping2022

    • Author(s)
      Kato Daiki、Feng Bin、Noritake Yasunobu、Hishida Tomoko、Shibata Naoya、Ikuhara Yuichi
    • Journal Title

      Applied Physics Express

      Volume: 15 Issue: 9 Pages: 095501-095501

    • DOI

      10.35848/1882-0786/ac851f

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Orthorhombic distortion-induced anatase-like optoelectronic properties of rutile TiO22022

    • Author(s)
      Chen Binjie、Kang Kungwan、Jeen Hyoungjeen、Zhang Yuqiao、Lin Jinghuang、Feng Bin、Ikuhara Yuichi、Hoshino Sena、Matsunaga Katsuyuki、Ohta Hiromichi
    • Journal Title

      Journal of Applied Physics

      Volume: 132 Issue: 18 Pages: 185301-185301

    • DOI

      10.1063/5.0119725

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Al2O3粒界移動の原子レベル直接観察2022

    • Author(s)
      馮 斌, 魏 家科, 柴田 直哉, 幾原 雄一
    • Journal Title

      セラミックス

      Volume: 57 Pages: 654-657

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] 先端電子顕微鏡法による格子欠陥機能起源の解明と材料設計2022

    • Author(s)
      馮 斌
    • Journal Title

      セラミックス

      Volume: 57 Pages: 472-474

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Presentation] STEMを用いたセラミックス欠陥原子構造解析2024

    • Author(s)
      馮 斌
    • Organizer
      日本セラミックス協会年会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Grain boundary segregation in oxide ceramics studied using atomic-resolution STEM EDS2023

    • Author(s)
      Bin Feng, Chuchu Yang, Naoya Shibata, Yuichi Ikuhara
    • Organizer
      The International Conference on Sintering 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Observation of grain boundary migration in Al2O3 at atomic scale2023

    • Author(s)
      Bin Feng, Jiake Wei, Naoya Shibata, Yuichi Ikuhara
    • Organizer
      IAMNano2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Atomic grain boundary migration in Al2O3 studied by STEM2023

    • Author(s)
      Bin Feng, Jiake Wei, Naoya Shibata, Yuichi Ikuhara
    • Organizer
      International Workshop on Scanning Transmission Electron Microscopy and Related Techniques
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] TEMその場観察を用いたジルコニアセラミックス強靭化機構の解明2023

    • Author(s)
      馮 斌, 中出 博暁, 栃木 栄太, 太田 裕道, 柴田 直哉, 幾原 雄一
    • Organizer
      日本顕微鏡学会学術講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 超高速高温焼結法による3YSZの創製2023

    • Author(s)
      馮 斌, 村上 竜平, 松井 光二, 柴田 直哉, 幾原 雄一
    • Organizer
      一般社団法人粉体粉末冶金協会2023年度春季大会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Atomic structure and chemistry of ceramic grain boundaries studied using atomic-resolution STEM-EDS2023

    • Author(s)
      Bin Feng, Naoya Shibata, Yuichi Ikuhara
    • Organizer
      The 15th Pacific Rim Conference of Ceramic Societies & 13th International conference on high-performance ceramics
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Impurity diffusion and segregation in Al2O3 GB studied by STEM2023

    • Author(s)
      Bin Feng, Naoya Shibata, Yuichi Ikuhara
    • Organizer
      International Symposium on Electron Microscopy & Materials Science
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Atomic structure and chemistry of ceramic grain boundaries studied using STEM2023

    • Author(s)
      Bin Feng, Naoya Shibata, Yuichi Ikuhara
    • Organizer
      Annual Chinese Microscopy Society Meeting 2023
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Atomic structure and chemistry of ceramic grain boundaries investigated by atomic-resolution STEM2023

    • Author(s)
      Bin Feng, Naoya Shibata, Yuichi Ikuhara
    • Organizer
      Peking University ‘Boya M-Talents’ National Doctoral Academic Forum of Materials Science
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Investigation of Ti segregation behaviors in Al2O3 grain boundaries2023

    • Author(s)
      Chuchu Yang, Bin Feng, Naoya Shibata,Yuichi Ikuhara
    • Organizer
      日本セラミックス協会 2023年年会
    • Related Report
      2022 Research-status Report
  • [Presentation] 超高速高温焼結法によるジルコニアセラミックスの創製2022

    • Author(s)
      村上竜平,馮斌,松井光二,柴田直哉,幾原雄一
    • Organizer
      日本セラミックス協会 第35回秋季シンポジウム
    • Related Report
      2022 Research-status Report
  • [Presentation] YSZ非対称粒界偏析の原子分解能観察2022

    • Author(s)
      松田幹大, 馮斌, 柴田直哉, 幾原雄一
    • Organizer
      日本顕微鏡学会 第78回学術講演会
    • Related Report
      2022 Research-status Report
  • [Presentation] YSZ非対称傾角粒界における偏析構造の解析2022

    • Author(s)
      松田幹大, 馮斌, 柴田直哉, 幾原雄一
    • Organizer
      日本金属学会 2022年秋期講演大会
    • Related Report
      2022 Research-status Report
  • [Presentation] Atomic scale observation of solute segregation at YSZ asymmetric grain boundaries2022

    • Author(s)
      Mikihiro Matsuda, Bin Feng, Naoya Shibata, Yuichi Ikuhara
    • Organizer
      The 4th East Asia Microscopy Conference(EAMC4)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] STEM を用いた MgO添加 AlN 積層欠陥の構造解析2022

    • Author(s)
      加藤大貴、馮斌、則武賢信、菱田智子、柴田直哉、幾原雄一
    • Organizer
      日本セラミックス協会 第 35 回秋季シンポジウム
    • Related Report
      2022 Research-status Report
  • [Presentation] Atomic structural analysis of Inversion Domain Boundary in MgO-doped AlN2022

    • Author(s)
      Daiki Kato, Bin Feng, Yasunobu Noritake, Tomoko Hishida, Naoya Shibata, Yuichi Ikuhara
    • Organizer
      MS&T22
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] その場TEM観察を用いたジルコニア強靭化メカニズムの解明2022

    • Author(s)
      馮 斌, 中出 博暁, 栃木 栄太, 太田 裕道, 柴田 直哉, 幾原 雄一
    • Organizer
      日本セラミックス協会 第35回秋季シンポジウム
    • Related Report
      2022 Research-status Report
  • [Presentation] Investigation of phase transformation toughening mechanism in zirconia ceramics by in-situ TEM observation2022

    • Author(s)
      Bin Feng, Hiroaki Nakade, Eita Tochigi, Hiromichi Ohta, Naoya Shibata, Yuichi Ikuhara
    • Organizer
      The 4th East-Asia Microscopy Conference
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 超高速高温焼結法によるジルコニアセラミックスの創製2022

    • Author(s)
      馮 斌,村上 竜平,松田 幹大, 松井 光二,柴田 直哉,幾原 雄一
    • Organizer
      学振124委員会第170回研究会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Phonon measurement of Al2O3 grain boundaries using STEM-EELS2022

    • Author(s)
      Jingyuan Yan, Bin Feng, Naoya Shibata, Peng Gao, Yuichi Ikuhara
    • Organizer
      日本金属学会 2022年秋期講演大会
    • Related Report
      2022 Research-status Report
  • [Presentation] Atomistic Segregation Behaviors of Ti in Al2O3 Grain Boundaries2022

    • Author(s)
      Chuchu Yang, Bin Feng, Naoya Shibata,Yuichi Ikuhara
    • Organizer
      MRS fall meeting 2022
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research

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Published: 2022-04-19   Modified: 2025-01-30  

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