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Design of Protective Rust Layer on Carbon Cteel Considering Cathodic Reduction Behaviour

Research Project

Project/Area Number 19H02479
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 26050:Material processing and microstructure control-related
Research InstitutionOsaka University

Principal Investigator

Yamashita Masato  大阪大学, 工学研究科, 招へい教授 (60291960)

Co-Investigator(Kenkyū-buntansha) 花木 宏修  大阪大学, 工学研究科, 招へい准教授 (20336829)
藤本 愼司  大阪大学, 工学研究科, 教授 (70199371)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥17,680,000 (Direct Cost: ¥13,600,000、Indirect Cost: ¥4,080,000)
Fiscal Year 2021: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2020: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2019: ¥12,610,000 (Direct Cost: ¥9,700,000、Indirect Cost: ¥2,910,000)
Keywords炭素鋼 / 鉄さび / 大気腐食 / 防食 / カソード還元 / 放射光
Outline of Research at the Start

社会資本構造物を構成する鉄鋼材料は一般に腐食しやすく、維持管理のための防食が重要である。鋼材が腐食すると「さび」を生じるが、炭素鋼のさび層は防食的ではなく、さび自体が鉄鋼に対し酸化剤となって、母材の腐食を加速する。さび層を構成する鉄酸化物にはいくつかの種類があるが、構造次第で還元されやすさも異なる。また、鉄さび中に鉄以外の金属元素の導入により、還元されにくいさびを育成することが可能である。本研究では、鉄さびに非鉄元素を導入した場合の還元挙動の変化に注目し、防食的なさびの構造を原子レベルから探索する。さらに、防食的なさびの育成方法を確立し、社会資本の長寿命化に寄与する新規な防食法を提案する。

Outline of Final Research Achievements

Social capital steel structures are susceptible to corrosion, and it is important to protect them from corrosion to build a strong infrastructure for the SDGs. Corrosion of steel materials produces "iron rust," and the corrosion is accelerated when the iron rust is reduced. This research aims to develop rust and corrosion product which are resistant to reduction by introducing non-ferrous metallic ions to inhibit corrosion, and will lay the foundation for a new corrosion prevention method that will contribute to extending the service life of important facilities such as bridges and plant equipment.
The research results showed that (1) Doping Ni, Al, and Zn ions into iron rust inhibits reduction of the rust and reduces corrosion of steel materials. (2) When a coating with nonferrous metal ions is applied to steel, the corrosion product layer on the surface of the steel changes to a stable structure and corrosion resistance of the steel is increased.

Academic Significance and Societal Importance of the Research Achievements

高度成長期において建設された多くの鉄鋼インフラはすでに建設から長期間を経過し、腐食による劣化が社会問題となっている。今後長期にわたってそれらを健全に保つための補修費用は飛躍的に増大していくことが指摘されている。高度成長期は社会資本を建造する時代であったが、成熟した社会における現在から将来にかけて、社会資本の維持が最重要課題の一つになる時代に入っている。
本研究成果は、鋼材表面に生成するさびを還元されにくい(=酸化剤として作用し難い)組成や構造に制御することを可能にし、さびの還元特性を解明した点で学術的意義を与え、鋼材の耐食性を高めることで鉄鋼インフラを守る技術開発に繋がる点に社会的意義がある。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (20 results)

All 2021 2020 2019

All Journal Article (7 results) (of which Peer Reviewed: 7 results,  Open Access: 1 results) Presentation (13 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results)

  • [Journal Article] Structure and Reduction Behavior of Iron Rust of Carbon Steel Covered with Al<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub>-added Resin Coating2021

    • Author(s)
      出口 博史、林田 将汰、土谷 博昭、花木 宏修、山下 正人、藤本 慎司
    • Journal Title

      SPring-8/SACLA Research Report

      Volume: 9 Issue: 7 Pages: 550-553

    • DOI

      10.18957/rr.9.7.550

    • NAID

      130008136293

    • ISSN
      2187-6886
    • Year and Date
      2021-12-27
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Corrosion Behavior of Carbon Steel Coated with a Zinc-Rich Paint Containing Aluminum Sulfate and Barium Oxide under Wet and Dry Cyclic Conditions2021

    • Author(s)
      Yamashita Masato、Takahashi Masamitsu、Deguchi Hiroshi、Hayashi Yasunori、Kimura Akihiko、Hanaki Koushu、Tsuchiya Hiroaki、Fujimoto Shinji
    • Journal Title

      Zairyo-to-Kankyo

      Volume: 70 Issue: 10 Pages: 327-333

    • DOI

      10.3323/jcorr.70.327

    • NAID

      130008114742

    • ISSN
      0917-0480, 1881-9664
    • Year and Date
      2021-10-10
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Structure of Corrosion Product Formed on Carbon Steel Covered with NiSO<sub>4</sub>-Added Resin Coating under Sulfuric Acid Mist Environment Containing Chloride2021

    • Author(s)
      Hayashida Shota、Takahashi Masamitsu、Deguchi Hiroshi、Tsuchiya Hiroaki、Hanaki Koushu、Yamashita Masato、Fujimoto Shinji
    • Journal Title

      MATERIALS TRANSACTIONS

      Volume: 62 Issue: 6 Pages: 781-787

    • DOI

      10.2320/matertrans.C-M2021819

    • NAID

      130008042824

    • ISSN
      1345-9678, 1347-5320
    • Year and Date
      2021-06-01
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Corrosion behavior of carbon steel coated with a zinc‐rich paint containing metallic compounds under wet and dry cyclic conditions2021

    • Author(s)
      Takahashi Masamitsu、Deguchi Hiroshi、Hayashi Yasunori、Kimura Akihiko、Hanaki Koushu、Tsuchiya Hiroaki、Yamashita Masato、Fujimoto Shinji
    • Journal Title

      Materials and Corrosion

      Volume: 72 Issue: 11 Pages: 1787-1795

    • DOI

      10.1002/maco.202112465

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Corrosion Behavior of Rusted Carbon Steel Coated with a Paint Containing Metallic Salt under Wet and Dry Cyclic Condition2020

    • Author(s)
      TAKAHASHI Masamitsu、HAYASHI Yasunori、KIMURA Akihiko、HANAKI Koushu、YAMASHITA Masato、TSUCHIYA Hiroaki、FUJIMOTO Shinji
    • Journal Title

      Journal of the Society of Materials Science, Japan

      Volume: 69 Issue: 11 Pages: 797-803

    • DOI

      10.2472/jsms.69.797

    • NAID

      130007941375

    • ISSN
      0514-5163, 1880-7488
    • Year and Date
      2020-11-15
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Structure of Corrosion Product Formed on Carbon Steel Covered with NiSO<sub>4</sub>-added Resin Coating under Sulfuric Acid Mist Environment Containing Chloride2020

    • Author(s)
      Hayashida Shota、Takahashi Masamitsu、Deguchi Hiroshi、Tsuchiya Hiroaki、Hanaki Koushu、Yamashita Masato、Fujimoto Shinji
    • Journal Title

      Zairyo-to-Kankyo

      Volume: 69 Issue: 5 Pages: 148-153

    • DOI

      10.3323/jcorr.69.148

    • NAID

      130007940332

    • ISSN
      0917-0480, 1881-9664
    • Year and Date
      2020-05-10
    • Related Report
      2020 Annual Research Report 2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Modification of Rust Layer on Carbon Steel with Reactive Actions of Metallic Cations for Improved Corrosion Protectiveness2020

    • Author(s)
      Kim Kyung-Tae、Tsuchiya Hiroaki、Hanaki Koushu、Yamashita Masato、Fujimoto Shinji
    • Journal Title

      Corrosion

      Volume: 76 Issue: 4 Pages: 335-343

    • DOI

      10.5006/3408

    • NAID

      120007099230

    • Related Report
      2020 Annual Research Report 2019 Annual Research Report
    • Peer Reviewed
  • [Presentation] 塩化物を含む硫酸ミスト環境における金属化合物含有樹脂被覆炭素鋼の腐食生成物の構造2021

    • Author(s)
      高橋正充, 出口博史, 林慶知, 木村晃彦, 花木宏修, 土谷博昭, 山下正人, 藤本慎司
    • Organizer
      腐食防食学会材料と環境2021
    • Related Report
      2021 Annual Research Report
  • [Presentation] 金属カチオン含有水溶液中における発錆炭素鋼のカソード分極挙動とさびの構造2021

    • Author(s)
      大本篤, 出口博史, 土谷博昭, 花木宏修, 山下正人, 藤本慎司
    • Organizer
      日本金属学会2021年(第169回)秋期講演大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 硫酸アルミニウムと酸化バリウムを添加した ジンクリッチペイント塗布炭素鋼の腐食生成物の放射光解析2021

    • Author(s)
      山下正人, 高橋正充, 出口博史, 花木宏修, 土谷博昭, 藤本慎司
    • Organizer
      腐食防食学会第68回材料と環境討論会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 濃度の異なる金属カチオン含有水溶液中での発錆炭素鋼のカソード分極挙動2021

    • Author(s)
      大本篤、出口博史、土谷博昭、花木宏修、山下正人、藤本慎司
    • Organizer
      日本金属学会2021年(第168回)春期講演大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 大気暴露期間の異なる発錆炭素鋼のカソード分極挙動2020

    • Author(s)
      阿賀一朗、出口博史、土谷博昭、花木宏修、山下正人、藤本慎司
    • Organizer
      日本金属学会2020年(第167回)秋期講演大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 金属カチオン含有水溶液中における発錆炭素鋼のカソード分極挙動2020

    • Author(s)
      大本篤、出口博史、土谷博昭、花木宏修、山下正人、藤本慎司
    • Organizer
      日本金属学会2020年(第167回)秋期講演大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 金属化合物を添加したジンクリッチペイント塗布鋼材の腐食生成物の構造2020

    • Author(s)
      高橋正充、出口博史、土谷博昭、花木宏修、木村晃彦、林慶知、山下正人、藤本慎司
    • Organizer
      腐食防食学会第67回材料と環境討論会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Reduction Behavior of Rusted Carbon Steel in Metallic Cation-Containing Solutions2020

    • Author(s)
      Omoto Atsushi, Tsuchiya Hiroaki, Hanaki Koushu, Yamashita Masato, Fujimoto Shinji
    • Organizer
      The Electrochemical Society, Pacific Rim Meeting 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Cathodic Polarization Behavior of Rusted Carbon Steels Exposed to Atmospheric Environment for Different Duration2020

    • Author(s)
      Aga Ichiro, Deguchi Hiroshi, Tsuchiya Hiroaki, Hanaki Koushu, Yamashita Masato, Fujimoto Shinji
    • Organizer
      The Electrochemical Society, Pacific Rim Meeting 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Structural Analysis of Rust Layer Formed on Carbon Steel Exposed to Atmospheric Corrosion Environments Using Synchrotron Radiation X-Rays2020

    • Author(s)
      Yamashita Masato, Fujimoto Shinji
    • Organizer
      The Electrochemical Society, Pacific Rim Meeting 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 厚さの異なるさび層を有する炭素鋼のカソード分極挙動2020

    • Author(s)
      阿賀一朗、出口博史、土谷博昭、花木宏修、山下正人、藤本慎司
    • Organizer
      日本金属学会2020年(第166回)春期講演大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 塩化物を含む硫酸ミスト環境においてNiSO4含有樹脂被覆炭素鋼に形成した腐食生成物の構造と防食性2020

    • Author(s)
      林田将汰、高橋正充、出口博史、土谷博昭、花木宏修、山下正人、藤本慎司
    • Organizer
      日本金属学会2020年(第166回)春期講演大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 塩化物を含む硫酸ミスト環境におけるNi2+含有樹脂被覆炭素鋼の腐食生成物の放射光解析2019

    • Author(s)
      林田将汰、出口博史、土谷博昭、花木宏修、山下正人、藤本慎司
    • Organizer
      腐食防食学会第66回材料と環境討論会
    • Related Report
      2019 Annual Research Report

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Published: 2019-04-18   Modified: 2023-01-30  

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