• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Understanding for mechanism of hydrogen embrittlement using a scanning blue-laser-enhanced electrochemical microscope for hydrogen detection

Research Project

Project/Area Number 18K04784
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 26050:Material processing and microstructure control-related
Research InstitutionKansai University

Principal Investigator

HARUNA Takumi  関西大学, 化学生命工学部, 教授 (70243186)

Co-Investigator(Kenkyū-buntansha) 廣畑 洋平  関西大学, 化学生命工学部, 助教 (00761264)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2019: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords水素検出用走査型レーザー電解顕微鏡 / 水素脆化 / 局在水素 / 水素検出 / 高強度鋼
Outline of Final Research Achievements

Scanning Blue-Laser-Enhanced Electrochemical Microscope for Hydrogen detection (H-SBLEEM) was tried to be developed in this research in order to detect hydrogen diffusing in a steel. The system consisted of a optical microscope, an oscillator of semiconductor blue laser, an electrically-controlled X-Y stage, two small cells for electrochemical hydrogen permeation test. It was realized that an effective position resolution was 0.03 mm and a hydrogen flux at the tiny laser spot was able to be quantified. As Fe plate was subjected to the system, it was revealed that the surface without Ni-plated is more sensitive to hydrogen detection than the Ni-plated surface. Moreover, it was found that a hydrogen flux was larger inside a grain and almost no hydrogen was detected at a grain boundary.

Academic Significance and Societal Importance of the Research Achievements

高強度鉄鋼材料に発生する水素脆化の機構を理解するために,材料中に不均一に移動する水素をin-situに検出可能な装置が切望されているので,本装置の開発に取り組んだ.その結果である0.03 mmの有効位置分解能と微小レーザー照射領域における単位時間当たりの水素移動量の定量化の実現は,水素脆化機構を検討する上でこれまでにない情報を与えることで学術的意義があり,水素移動経路に関する新たな情報に基づいた組織制御による水素脆化抑制技術の開発などで社会的意義があると考えられる.

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (16 results)

All 2021 2020 2019 2018

All Journal Article (5 results) (of which Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (11 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Hydrogen Absorption Rate into Fe with Rust Layer Containing NaCl during Atmospheric Corrosion in Humidity-controlled Air2021

    • Author(s)
      Haruna Takumi、Shoji Yuki、Hirohata Youhei
    • Journal Title

      ISIJ International

      Volume: 61 Issue: 4 Pages: 1079-1084

    • DOI

      10.2355/isijinternational.ISIJINT-2020-018

    • NAID

      130008024812

    • ISSN
      0915-1559, 1347-5460
    • Year and Date
      2021-04-15
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effect of Humidity of Air on Hydrogen Absorption into Fe with Rust Layer Containing MgCl<sub>2</sub> during Atmospheric Corrosion2021

    • Author(s)
      Wang Yang、Yamanishi Jun、Haruna Takumi
    • Journal Title

      ISIJ International

      Volume: 61 Issue: 4 Pages: 1143-1150

    • DOI

      10.2355/isijinternational.ISIJINT-2020-426

    • NAID

      130008024877

    • ISSN
      0915-1559, 1347-5460
    • Year and Date
      2021-04-15
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Hydrogen Absorption into Fe Plates with Rust Layers Containing Various MgCl<sub>2</sub> Amounts during Atmospheric Corrosion with Controlled Humidity2021

    • Author(s)
      Haruna Takumi、Wang Yang、Yamanishi Jun
    • Journal Title

      ISIJ International

      Volume: 61 Issue: 4 Pages: 1179-1185

    • DOI

      10.2355/isijinternational.ISIJINT-2020-502

    • NAID

      130008024873

    • ISSN
      0915-1559, 1347-5460
    • Year and Date
      2021-04-15
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Ti基金属間化合物の環境脆化に対する電気化学的解釈2018

    • Author(s)
      春名 匠
    • Journal Title

      チタン

      Volume: 66 Pages: 175-179

    • Related Report
      2018 Research-status Report
  • [Journal Article] Hydrogen absorption forinto steels with microstructural defects in acidic acidic and neutral sulfate solutions2018

    • Author(s)
      T. Haruna, Y. Nii
    • Journal Title

      Proc. of Eurocorr2018

      Volume: 1

    • Related Report
      2018 Research-status Report
  • [Presentation] 水素の拡散経路を検出するための走査型青色レーザー電解顕微鏡の開発2020

    • Author(s)
      春名 匠,石田広志 ,門脇梨沙,廣畑洋平
    • Organizer
      材料と環境2020
    • Related Report
      2020 Annual Research Report
  • [Presentation] Feへの水素侵入挙動に及ぼすpHおよび塩化物イオンの影響2020

    • Author(s)
      望月 哲,廣畑洋平,春名 匠
    • Organizer
      材料と環境2020
    • Related Report
      2020 Annual Research Report
  • [Presentation] Fe に対する水素侵入の電位依存性に及ぼすpH の影響2020

    • Author(s)
      望月 哲, 春名 匠
    • Organizer
      第67回材料と環境討論会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 塩化物イオン含有水溶液中における Feへの水素侵入挙動に及ぼすpHの影響2020

    • Author(s)
      望月 哲,原田佑香,廣畑洋平,春名 匠
    • Organizer
      日本鉄鋼協会2020年度春季(第179回)講演大会
    • Related Report
      2019 Research-status Report
  • [Presentation] 走査型レーザ電解顕微鏡を用いた純鉄における局在化水素の検出2020

    • Author(s)
      石田広志 ,門脇梨沙,廣畑洋平,春名 匠
    • Organizer
      日本鉄鋼協会2020年度春季(第179回)講演大会
    • Related Report
      2019 Research-status Report
  • [Presentation] MgCl2含有量の異なる安定さび層付き純鉄への湿潤環境下における水素侵入挙動2019

    • Author(s)
      汪 洋,廣畑洋平,春名 匠
    • Organizer
      材料と環境2019
    • Related Report
      2019 Research-status Report
  • [Presentation] さび層を形成した純鉄への水素侵入に及ぼすMgCl2付着量の影響2019

    • Author(s)
      汪 洋,廣畑洋平,春名 匠
    • Organizer
      日本鉄鋼協会2019年度秋季(第178回)講演大会
    • Related Report
      2019 Research-status Report
  • [Presentation] 湿潤環境下におけるMgCl2を含有するさび層を形成した純鉄の水素侵入挙動2019

    • Author(s)
      汪 洋,廣畑洋平,春名 匠
    • Organizer
      第66回材料と環境討論会
    • Related Report
      2019 Research-status Report
  • [Presentation] 硫酸イオン含有水溶液中におけるFeへの水素侵入挙動に及ぼすpHの影響2019

    • Author(s)
      望月 哲,廣畑洋平,春名 匠
    • Organizer
      第66回材料と環境討論会
    • Related Report
      2019 Research-status Report
  • [Presentation] Hydrogen absorption forinto steels with microstructural defects in acidic acidic and neutral sulfate solutions2018

    • Author(s)
      T. Haruna, Y. Nii
    • Organizer
      Eurocorr2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 定湿度/乾燥の繰り返し試験中におけるさび付き純鉄の水素透過速度2018

    • Author(s)
      汪 洋,山西 潤,廣畑洋平,春名 匠
    • Organizer
      日本鉄鋼協会2018年度秋季講演大会概要集
    • Related Report
      2018 Research-status Report

URL: 

Published: 2018-04-23   Modified: 2022-01-27  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi