Pitting corrosion in steel and electrochemical noise intensity

Electrochemical noise data in the presence of pitting corrosion were analyzed. A correlation between the intensity of the observed noise and mass loss of steel electrodes was recognized. The registered noise was decomposed into a set of band limited components using wavelet transform. It has been ob...

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Bibliographic Details
Published in:Electrochemistry communications 2002-05, Vol.4 (5), p.388-391
Main Authors: Smulko, Janusz, Darowicki, Kazimierz, Zieliński, Artur
Format: Article
Language:English
Subjects:
Applied sciences
Corrosion
Corrosion mechanisms
Electrochemical noise
Exact sciences and technology
Metals. Metallurgy
Pitting corrosion
Wavelet transform
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Summary:Electrochemical noise data in the presence of pitting corrosion were analyzed. A correlation between the intensity of the observed noise and mass loss of steel electrodes was recognized. The registered noise was decomposed into a set of band limited components using wavelet transform. It has been observed that the standard deviation of the chosen component was more strictly correlated with mass loss of electrodes than the standard deviation of the other components. The frequency band of the chosen component was adequate to the band where energy of transients, typical for pitting corrosion dominated. The measurement results were obtained only for the limited number of electrodes due to a very long time of noise observation.
ISSN:1388-2481
1873-1902
DOI:10.1016/S1388-2481(02)00317-X