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

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 a...

Full description

Saved in:
Bibliographic Details
Published in:Electrochimica acta 2015-11, Vol.183, p.137-142
Main Authors: Miyamoto, Ko-ichiro, Sakakita, Sakura, Wagner, Torsten, Schöning, Michael J., Yoshinobu, Tatsuo
Format: Article
Language:English
Subjects:
Chemical imaging sensor
crevice corrosion
in-situ pH imaging
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:0013-4686
1873-3859
DOI:10.1016/j.electacta.2015.07.184