Real-time quantitatively assessing the corrosion-induced hydrogen trapping in metals
| Project/Area Number |
21K14435
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 26050:Material processing and microstructure control-related
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| Research Institution | The University of Tokyo |
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Principal Investigator |
Wu Kaige 東京大学, 大学院工学系研究科(工学部), 特任研究員 (70887984)
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| Project Period (FY) |
2021-04-01 – 2023-03-31
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| Project Status |
Completed (Fiscal Year 2022)
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| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2022: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2021: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Keywords | localized corrosion / SCC / hydrogen evolution / X-ray CT / acoustic emission / TDS / steels / pitting corrosion / stress corrosion / steel / magensium alloy / alunimum alloy / Corrosion / Hydrogen embrittlement / Hydrogen trapping / Acoustic emission |
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| Outline of Research at the Start |
In this study, the hydrogen trapping in metals during corrosion is firstly proposed to be real-time assessed through monitoring the concurrent hydrogen bubble evolution with
acoustic emission (AE).
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| Outline of Final Research Achievements |
Firstly, the main idea of the project was to link corrosion-induced hydrogen ingress into metals and real-time Acoustic Emission (AE) signals, but unfortunately proved to be "negative" according to the experimental data obtained so far. In the future, more investigation with improved framework will be conducted to further verify this original idea. On the other hand, thanks to this grant funding, one experimental framework,i.e., micro-electrochemical system equipped with in-situ high-speed microscopy and real-time AE monitoring, was successfully established; And one original electrochemical test approach, i.e., intermittent anodic polarization (IAP) test approach, was developed.
During the study period of this grant project, 10 oral presentations were published in the professional societies including JIM, JSNDI, JSCE, EuroCorr, and IAES. One patent is being prepared for application and three journal papers were submitted and under review.
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| Academic Significance and Societal Importance of the Research Achievements |
The output of this study will not only provide significant clues for designing stronger alloys against environmental degradation and corrosion, but also establish a database for allowing an in-situ and real-time monitoring of the corrosion-induced damage.
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Report
(2 results)
Research Products
(5 results)
