| Project/Area Number |
07455283
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Material processing/treatments
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| Research Institution | MURORAN INSTITUTE OF TECHNOLOGY |
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Principal Investigator |
MISAWA Toshihei MURORAN INSTITUTE OF TECHNOLOGY,FACULTY OF ENGINEERING,PROFESSOR, 工学部, 教授 (70005982)
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| Co-Investigator(Kenkyū-buntansha) |
SAITOH Hideyuki MURORAN INSTITUTE OF TECHNOLOGY,FACULTY OF ENGINEERING,ASSOCIATED PROFESSOR, 工学部, 助教授 (00235061)
SAKAI Akira MURORAN INSTITUTE OF TECHNOLOGY,FACULTY OF ENGINEERING,ASSOCIATED PROFESSOR, 工学部, 助教授 (70136422)
TANABE Hiroyoshi MURORAN INSTITUTE OF TECHNOLOGY,FACULTY OF ENGINEERING,ASSOCIATED PROFESSOR, 工学部, 助教授 (70125376)
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| Project Period (FY) |
1995 – 1996
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| Project Status |
Completed (Fiscal Year 1996)
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| Budget Amount *help |
¥7,000,000 (Direct Cost: ¥7,000,000)
Fiscal Year 1996: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1995: ¥6,500,000 (Direct Cost: ¥6,500,000)
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| Keywords | SCANNING ELECTROCHEMICAL MICROSCOPY / IN-SITU OBSERVATION / PITTING CORROSION / HIGH NITROGEN STAINLESS STEEL / TRITIUM AUTORADIOGRAPHY / HYDROGEN DISTRIBUTION / トリチウムオートラジオグラフ法 / 水素分布可視化 / 孔食発生 / 顕微レーザラマン分光 / 水素イオン分布 / 塩素イオン分布 / 不動態皮膜破壊 |
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| Research Abstract |
We have successfully performed in-situ observation of the localized distribution of reaction species of H^+ and Cl^- in microscopic region (1mum*emum) focused on the electrolyte solution side and identifying precursor sites for pitting on the substrate surface of austenitic stainless steels with different corrosion resistance by using the three modes of modified scanning electrochemical microscopy (SECM). Using in-situ Raman spectroscopy nitrate ions at the pit precursor region are identified for the first time. Tritium E.M.autoradiography and hydrogen content measurement are carried out to examine the effect of boron addition on the behavior of hydrogen segregation at the grain boundary in Ni_3 (Si, Ti) intermetallic.
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