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Evaluation of the localized corrosion on Mg electrode surface by electrochemical noise technique
Author(s) -
Naghizade Razieh,
Hosseini Seyyed M. A.,
ShahidiZandi Mehdi,
Saheb Vahid
Publication year - 2021
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.202011940
Subject(s) - electrochemical noise , electrode , corrosion , electrochemistry , electrolyte , materials science , noise (video) , analytical chemistry (journal) , composite material , chemistry , chromatography , computer science , image (mathematics) , artificial intelligence
The symmetrical and asymmetrical electrodes made of Mg were studied in 0.1‐M NaCl electrolyte adjusted at pH 12. The statistical and wavelet methods were employed for analyzing the electrochemical current noise (ECN) signals. The asymmetric configuration was used for electrochemical detection of filiform corrosion on Mg electrode. The real time scale of the dominant transients of the asymmetric electrodes was detected on the basis of the maximum peak in the SDPS plots. The SDPS values of the real time scale crystals of the ECN signals resulting from asymmetrical electrodes increased with the increase in immersion time due to the onset of filiform corrosion.