論文

査読有り
2018年

In situ electrochemical study on crevice environment of stainless steel in high temperature water

Minerals, Metals and Materials Series
  • Y. Soma
  • ,
  • C. Kato
  • ,
  • F. Ueno

11
開始ページ
509
終了ページ
521
記述言語
英語
掲載種別
研究論文(国際会議プロシーディングス)
DOI
10.1007/978-3-319-68454-3_40
出版者・発行元
Springer International Publishing

In situ electrochemical impedance spectroscopy measurement within crevice of stainless steel in 288 °C water has been conducted to analyze crevice water chemistry. Small sensors (φ~250μ measured local solution electrical conductivity κ crev, polarization resistance and electrochemical corrosion potential. Real-time response of the κ crev as functions of bulk water conductivity and dissolved oxygen (DO) concentration has been quantitatively analyzed. The κ crev differ more than an order of magnitude depending on the oxygen potential inside the crevice. The κ crev increased with addition of small amount of bulk DO (e.g. 30 ppb). The maximum κ crev was observed with DO of 32,000 ppb and became more than 100 times higher than that of bulk water. The effect of geometrical factors on the crevice environment was also found to play an important role in the water chemistry inside.

リンク情報
DOI
https://doi.org/10.1007/978-3-319-68454-3_40
ID情報
  • DOI : 10.1007/978-3-319-68454-3_40
  • ISSN : 2367-1696
  • ISSN : 2367-1181
  • SCOPUS ID : 85042424764

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