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TitleAutomated processing of electrochemical current noise in the time domain: I. Simulated signal
Publication TypeJournal Article
Year of Publication2010
AuthorsSoltis, J., Krouse D.P., Laycock N.J., and Zavadil K.R.
JournalCorrosion Science
Pagination838 - 847
Date Published2010
ISSN0010938X (ISSN)
KeywordsAutomated processing, Characteristic parameter, Current signatures, Electrochemical calculation, Electrochemical currents, Electrochemical process, Frequency domain analysis, Passivation, Pitting, Pitting corrosion, Potentiostatic tests, Potentiostatics, Quantitative information, Re-passivation, Simulated signals, Time domain, Time domain analysis
AbstractThe concept of automated processing of electrochemical current noise in the time domain is presented. The methodology is based on the identification of "run-ups", which are representative of every single rising feature (transient) in a signal. Selected transients are then subjected to the analysis in terms of their characteristic parameters. Functionality is first demonstrated on a simulated signal with a predefined sample of pitting nucleation events and then in application to processing current signatures from potentiostatic tests on Alloy C22. The results from the analysis of the simulated signal are compared with those of a frequency-based analysis, and it is demonstrated that analysis in the time domain provides direct quantitative information on electrochemical processes that cannot be obtained from frequency-domain analysis. © 2009 Elsevier Ltd.

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