Application of chemical imaging sensor to in-situ pH imaging in the vicinity of a corroding metal surface

Ko Ichiro Miyamoto, Sakura Sakakita, Torsten Wagner, Michael J. Schöning, Tatsuo Yoshinobu

研究成果: Article査読

14 被引用数 (Scopus)

抄録

The chemical imaging sensor was applied to in-situ pH imaging of the solution in the vicinity of a corroding surface of stainless steel under potentiostatic polarization. A test piece of polished stainless steel was placed on the sensing surface leaving a narrow gap filled with artificial seawater and the stainless steel was corroded under polarization. The pH images obtained during polarization showed correspondence between the region of lower pH and the site of corrosion. It was also found that the pH value in the gap became as low as 2 by polarization, which triggered corrosion.

本文言語English
ページ(範囲)137-142
ページ数6
ジャーナルElectrochimica Acta
183
DOI
出版ステータスPublished - 2015 11月 20

ASJC Scopus subject areas

  • 化学工学(全般)
  • 電気化学

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