2013 Fiscal Year Final Research Report
Hydrogen behavior in the metal detected by stress measurement and ESD measurement.
| Project/Area Number |
22560709
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Structural/Functional materials
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| Research Institution | National Institute for Materials Science |
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Principal Investigator |
ITAKURA Akiko 独立行政法人物質・材料研究機構, その他部局等, その他 (20343858)
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| Co-Investigator(Renkei-kenkyūsha) |
TAKAGI Shoji 東邦大学, 理学部, 教授 (60171419)
MURASE Yoshiharu (独)物質材料研究機構, 主任研究員 (10354193)
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| Project Period (FY) |
2010-04-01 – 2014-03-31
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| Keywords | 破壊・疲労 / 応力腐食割れ / 微小応力 / 水素 / マイクロカンチレバー |
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| Research Abstract |
Hydrogen in metals causes hydrogen embrittlement, which is the process of various metals to become brittle and fracture. Hydrogen detection seems to be one of the most difficult aspects of the problem and the phenomenon was not completely understood.
We have measured a surface stress of metal thin film during hydrogen plasma irradiation and detected compressive surface stress, which had a hysteresis. Alloys of complex structure are used as structural materials. It is not known where the hydrogen is in the alloy. We have tried to investigate hydrogen behavior in metal alloys from observation of two-dimensional hydrogen concentration on metal surface using electron stimulated desorption (ESD) method. We have detected micron order surface modification of hydrogen distribution.
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