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Formation mechanism of porous metals by liquid metal dealloying

Research Project

Project/Area Number 20K05126
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 26040:Structural materials and functional materials-related
Research InstitutionTohoku University

Principal Investigator

Wada Takeshi  東北大学, 金属材料研究所, 准教授 (10431602)

Co-Investigator(Kenkyū-buntansha) 奥川 将行  大阪大学, 大学院工学研究科, 助教 (70847160)
加藤 秀実  東北大学, 金属材料研究所, 教授 (80323096)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsポーラス金属 / 金属液体 / 脱成分 / 触媒 / 金属溶湯脱成分 / 粗大化 / ポロシティ
Outline of Research at the Start

金属溶湯脱成分(LMD)は従来の水溶液中腐食による脱成分では作製できなかった様々な金属のポーラス体を実現し、二次電池電極等の蓄電性能向上に寄与できる革新的な技術である。しかし現在ではLMD技術には未解明な点が多く、ポーラス構造を効率的に制御するための手法が確立していない。本研究では実験とシミュレーションによってLMDにおけるポーラス構造形成メカニズムの全容を明らかにし、その知見を基にしてポーラス構造を制御する技術を確立することを目的とする。

Outline of Final Research Achievements

In order to improve the functional properties of porous metals, it is important to control the pore/ligament size and volume fraction of the porous metals. In this study, we investigated a relationship between the processing parameters of liquid metal dealloying and the structure of the resulting porous metals. Experiments and simulations revealed that the presence of a component in the metal bath that interacts significantly with the ligament component promotes the coarsening of the porous structure. It was also found that by designing the intermetallic ligaments, the coarsening of the porous structure can be significantly suppressed and porous metals with very high specific surface area can be fabricated.

Academic Significance and Societal Importance of the Research Achievements

本研究によって金属溶湯脱成分技術においてポーラス金属が生成・粗大化するメカニズムをより詳細に理解することができた。その結果に基づいて金属間化合物を利用した新しい粗大化抑制手法を開発した。本成果は比表面積が大きなポーラス金属を作製するための重要な知見であり、卓越した性能を示す蓄電池電極や触媒を開発に結びつくことが期待される。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (26 results)

All 2023 2022 2021 2020

All Journal Article (9 results) (of which Int'l Joint Research: 6 results,  Peer Reviewed: 9 results,  Open Access: 2 results) Presentation (15 results) (of which Int'l Joint Research: 3 results,  Invited: 4 results) Patent(Industrial Property Rights) (2 results)

  • [Journal Article] Dissimilar Joining of Immiscible Fe-Mg using Solid Metal Dealloying2023

    • Author(s)
      K. Kurabayashi, T. Wada, H. Kato
    • Journal Title

      Scripta Materialia

      Volume: 230 Pages: 115404-115404

    • DOI

      10.1016/j.scriptamat.2023.115404

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Development of Porous Metals by Liquid Metal Dealloying2022

    • Author(s)
      WADA Takeshi、KATO Hidemi
    • Journal Title

      Journal of the Japan Society of Powder and Powder Metallurgy

      Volume: 69 Issue: 1 Pages: 27-33

    • DOI

      10.2497/jjspm.69.27

    • NAID

      130008141727

    • ISSN
      0532-8799, 1880-9014
    • Year and Date
      2022-01-15
    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Inhomogeneous dealloying kinetics along grain boundaries during liquid metal dealloying2022

    • Author(s)
      Joo S.-H.、Jeong Y.B.、Wada T.、Okulov I.V.、Kato H.
    • Journal Title

      Journal of Materials Science & Technology

      Volume: 106 Pages: 41-48

    • DOI

      10.1016/j.jmst.2021.07.023

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Ultrafine nanoporous intermetallic catalysts by high-temperature liquid metal dealloying for electrochemical hydrogen production2022

    • Author(s)
      Song Ruirui、Han Jiuhui、Okugawa Masayuki、Belosludov Rodion、Wada Takeshi、Jiang Jing、Wei Daixiu、Kudo Akira、Tian Yuan、Chen Mingwei、Kato Hidemi
    • Journal Title

      Nature Communications

      Volume: 13 Issue: 1 Pages: 5157-5157

    • DOI

      10.1038/s41467-022-32768-1

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Hierarchical heterostructured FeCr-(Mg-Mg2Ni) composite with 3D interconnected and lamellar structures synthesized by liquid metal dealloying2021

    • Author(s)
      Jeong Yeon Beom、Wada Takeshi、Joo Soo-Hyun、Park Jeong-Min、Kim Hyoung Seop、Okulov Ilya Vladimirovich、Kim Ki Buem、Kato Hidemi
    • Journal Title

      Journal of Materials Research and Technology

      Volume: 15 Pages: 4573-4579

    • DOI

      10.1016/j.jmrt.2021.10.080

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Beyond strength-ductility trade-off: 3D interconnected heterostructured composites by liquid metal dealloying2021

    • Author(s)
      Jeong Yeon Beom、Wada Takeshi、Joo Soo-Hyun、Park Jeong-Min、Moon Jongun、Kim Hyoung Seop、Okulov Ilya Vladimirovich、Park Sung Hyuk、Lee Jeong Hun、Kim Ki Buem、Kato Hidemi
    • Journal Title

      Composites Part B: Engineering

      Volume: 225 Pages: 109266-109266

    • DOI

      10.1016/j.compositesb.2021.109266

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Corrosion resistance of porous ferritic stainless steel produced by liquid metal dealloying of Incoloy 8002020

    • Author(s)
      M. Mokhtari, T. Wada, C. Le Bourlot, J. Duchet-Rumeau, H. Kato, E. Maire, N. Mary
    • Journal Title

      Corrosion Science

      Volume: 166 Pages: 108468-108468

    • DOI

      10.1016/j.corsci.2020.108468

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Novel hierarchical nanoporous graphene nanoplatelets with excellent rate capabilities produced via self-templating liquid metal dealloying2020

    • Author(s)
      W.-Y. Park, T. Wada, S.-H. Joo, H. Han, H. Kato
    • Journal Title

      Materials Today Communications

      Volume: 24 Pages: 101120-101120

    • DOI

      10.1016/j.mtcomm.2020.101120

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Mechanical Properties of FeCr‐Based Composite Materials Elaborated by Liquid Metal Dealloying towards Bioapplication2020

    • Author(s)
      M. Mokhtari, C. Le Bourlot, J. Duchet-Rumeau, E. Godet, P.-A. Geslin, S. Dancette, T. Wada, H. Kato, E. Maire
    • Journal Title

      Advanced Engineering Materials

      Volume: 22 Issue: 12 Pages: 2000381-2000381

    • DOI

      10.1002/adem.202000381

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 金属溶湯脱成分法におけるポーラス金属のハイエントロピー化が粗大化反応に及ぼす影響2022

    • Author(s)
      仲田 玲、和田 武、加藤 秀実
    • Organizer
      日本金属学会2022年秋季講演大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Beating Thermal Coarsening in Nanoporous Materials via High-Entropy Design2021

    • Author(s)
      和田武
    • Organizer
      LyonSE&N & ELyT workshop 2021 / JSPS Core to core 1st symposium
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 金属のポーラス化技術開発とその応用に関する研究2021

    • Author(s)
      和田 武
    • Organizer
      日本金属学会2022年春期講演大会(第170回)
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] ハイエントロピー金属ガラスのガラス形成能と動的機械的性質2021

    • Author(s)
      和田 武、大橋 勇介、ジャン ジン、加藤 秀実
    • Organizer
      日本金属学会2022年春期講演大会(第170回)
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Fabrication of porous metals by Liquid metal dealloying2021

    • Author(s)
      T. Wada, H. Kato
    • Organizer
      Nanoporous Materials by Alloy Corrosion
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] “Intermetallic Effect” on Ligament Coarsening during Liquid Metal Dealloying2021

    • Author(s)
      Ruirui Song, Jiuhui Han, Masayuki Okugawa, Takeshi Wada, Hidemi Kato
    • Organizer
      日本金属学会2021年秋期講演大会(第169回)
    • Related Report
      2021 Research-status Report
  • [Presentation] 金属溶湯脱成分におけるポーラス構造粗大化の金属溶湯依存性解明2021

    • Author(s)
      黒岩 優太、和田 武、加藤 秀実
    • Organizer
      日本金属学会2021年秋期講演大会(第169回)
    • Related Report
      2021 Research-status Report
  • [Presentation] 金属溶湯中におけるポーラス FeCr リガメント粗大化の溶湯成分依存性2021

    • Author(s)
      黒岩優太、和田武、加藤秀実
    • Organizer
      第141回金属材料研究所講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] Nanoporous Mo-M Alloys Fabricated by Liquid Metal Dealloying for Efficient Hydrogen Evolution Electrocatalysts2021

    • Author(s)
      R. Song, J. Han, M. Okugawa, T. Wada, H. Kato
    • Organizer
      第141回金属材料研究所講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] 金属溶湯脱成分による階層構造ポーラス金属の作製と形態制御2021

    • Author(s)
      佐藤俊太郎、和田武、加藤秀実
    • Organizer
      日本金属学会2021年春期講演大会
    • Related Report
      2020 Research-status Report
  • [Presentation] Fabrication of High Strength Mg and FeCr Heterostructure Composite beyond Rule of Mixture2021

    • Author(s)
      Yeon Beom JEONG, Takeshi Wada, Soo-Hyun Joo, Ki Buem Kim, Jeong-Min Park, Hyoung Seop Kim, Hidemi Kato
    • Organizer
      日本金属学会2021年春期講演大会
    • Related Report
      2020 Research-status Report
  • [Presentation] 金属溶湯脱成分法を用いたポーラス金属粉末の開発2020

    • Author(s)
      和田武、加藤秀実
    • Organizer
      粉体粉末冶金協会 2020年度秋季大会(第126回講演大会)
    • Related Report
      2020 Research-status Report
  • [Presentation] Preparation of nanoporous metals by liquid metal dealloying (LMD)2020

    • Author(s)
      和田武
    • Organizer
      Summit of Materials Science and Technology 2020 (SMST 2020)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 金属溶湯脱成分によるポーラス金属作製と応用2020

    • Author(s)
      和田武
    • Organizer
      第139回金属材料研究所講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] 金属溶湯脱成分法による L10-FeNi 規則合金作製の試み2020

    • Author(s)
      中村祐,加藤秀実,和田武 ,S. H. Joo
    • Organizer
      第139回金属材料研究所講演会
    • Related Report
      2020 Research-status Report
  • [Patent(Industrial Property Rights)] 金属部材の製造方法および金属部材2022

    • Inventor(s)
      和田武、加藤秀実
    • Industrial Property Rights Holder
      和田武、加藤秀実
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2022-140750
    • Filing Date
      2022
    • Related Report
      2022 Annual Research Report
  • [Patent(Industrial Property Rights)] 脱成分中に形成する無孔性粒子の低減方法2020

    • Inventor(s)
      加藤 秀実、和田 武
    • Industrial Property Rights Holder
      ㈱東北テクノアーチ、TPR株式会社
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2020-164656
    • Filing Date
      2020
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2024-01-30  

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