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Moiré based method for real‐time crevice corrosion monitoring
Author(s) -
Abdulsalam M.I.,
Shinohara T.
Publication year - 2006
Publication title -
materials and corrosion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.487
H-Index - 55
eISSN - 1521-4176
pISSN - 0947-5117
DOI - 10.1002/maco.200503961
Subject(s) - crevice corrosion , moiré pattern , corrosion , environmental science , materials science , metallurgy , forensic engineering , computer science , engineering , computer vision
A novel real‐time technique was developed to monitor localized corrosion occurring over a metal surface. It is an optical method based on the Moiré technique that has undergone further improvements and fine tuning for more accurate measurements. Upon testing, good agreements were obtained with the microscopically determined penetration depth. Application for this technique was demonstrated through real‐time monitoring of crevice corrosion activity occurring on the surface of AISI 316 (UNS S31600) stainless steel immersed in 3% NaCl at 60 °C. The crevice was an artificial clear glass/metal crevice with a gap thickness of 5 μm. Based on the findings of these results it was shown that this method can effectively and accurately be used to monitor crevice corrosion.