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Journal Articles

An Electrochemical sensor array for ${it in-situ}$ measurements of oxide film electric resistance in high temperature water

Uchida, Shunsuke; Sato, Tomonori; Kakinuma, Nagao*; Miyazawa, Takahiro*; Sato, Yoshiyuki*; M$"a$kel$"a$, K.*

ECS Transactions, 2(25), p.39 - 50, 2007/00

no abstracts in English

Journal Articles

Effects of hydrogen peroxide and oxygen on corrosion of stainless steel in high temperature water

Uchida, Shunsuke*; Sato, Tomonori; Morishima, Yusuke*; Hirose, Tatsuya*; Miyazawa, Takahiro*; Kakinuma, Nagao*; Sato, Yoshiyuki*; Usui, Naoshi*; Wada, Yoichi*

Proceedings of 12th International Conference on Environmental Degradation of Materials in Nuclear Power Systems-Water Reactors (CD-ROM), p.19 - 29, 2005/00

Static and dynamic responses of stainless steel specimens exposed to H$$_{2}$$O$$_{2}$$ and O$$_{2}$$ in high temperature water were evaluated by analyzing ECP and FDCI (frequency dependent complex impedance). The oxide films on the specimens were characterized by multilateral surface analyses, e.g., LRS, SIMS, XPS and direct electric resistance measurement. As a result of evaluation, it was confirmed that (1) corrosive condition of BWR normal water chemistry (NWC) was simulated by 100 ppb H$$_{2}$$O$$_{2}$$ without co-existing O$$_{2}$$, while that of hydrogen water chemistry (HWC) was simulated by 10 ppb H$$_{2}$$O$$_{2}$$, (2) ECP under HWC was as high as that under NWC, while dissolution rate of oxide film under HWC was much lower than that under NWC, (3) combination effects of electric resistance and dissolution rate of oxide caused same level ECP for both NWC and HWC, and (4) distinct weight loss of the specimen exposed to 100 ppb H$$_{2}$$O$$_{2}$$ was observed.

Oral presentation

In-situ measurement of teh electric resistance of the oxide film formed at the stainless steel surface in high temperature water

Sato, Tomonori; Uchida, Shunsuke; Kakinuma, Nagao*; Miyazawa, Takahiro*; Sato, Yoshiyuki*; Tsukada, Takashi

no journal, , 

no abstracts in English

Oral presentation

Evaluation of H$$_{2}$$O$$_{2}$$ effects on corrosion of structural materials, 25; Dependency of electric resistance of the oxide film

Sato, Tomonori; Uchida, Shunsuke; Kakinuma, Nagao*; Miyazawa, Takahiro*; Sato, Yoshiyuki*; Tsukada, Takashi

no journal, , 

no abstracts in English

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