In this study, an analysis has been made of Electrochemical Noise (EN) signals of potential and current obtained on immersing samples of the alloy AA5083 (UNS A95083) in solutions of NaCl. These signals have been processed using the calculation of the Hurst exponent, tool derived from the theory of chaos that allows one to estimate the influence that events occurring in the past have on the appearance of new events at subsequent times. The results obtained have enabled the values of the Hurst exponent to be correlated with the predominant mechanism of corrosion.

Subject
Electric current, Electrochemical noise, Slopes, Sodium chloride, Tools, Deviation, Algorithms, Sodium chloride solution, Electric potential, Immersion, Corrosion mechanisms, Alloys, Electrochemical potential
Keywords:
Electrochemical Noise, Chaos, Rescaled Range Analysis, Hurst Exponent, Localized Corrosion
Government work published by the Association for Materials Protection and Performance (AMPP) with permission of the author(s). Positions and opinions advanced in this work are those of the author(s) and not necessarily those of AMPP. Responsibility for the content of the work lies solely with the author(s).
2004
GOV
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