STP1277: A Comparison of Spectral and Chaotic Analysis of Electrochemical Noise

    Legat, A
    Researcher, Institute for Testing and Research in Materials and Structures, Ljubljana,

    Govekar, E
    Researcher, Faculty of Mechanical Engineering University of Ljubljana, Ljubljana,

    Pages: 13    Published: Jan 1996


    Potential and current fluctuations spontaneously generated by corrosion reactions are known as electrochemical noise. In certain cases, good correlation can be obtained between the results of the spectral analysis of electrochemical noise and corrosion rate and type. However, because of the chaotic nature of corrosion processes, a special mathematical treatment may be needed. In the present study, the electrochemical noise measured on various metals was treated by methods known from the theory of chaos, and the results were compared with the results of spectral analysis. It has been shown that the chaotic characteristics of electrochemical noise are related to corrosion type, whereas the rate of corrosion has no influence on the fractal dimensions of the noise.


    electrochemical noise measurement, power-spectrum density, chaos, fractal analysis

    Paper ID: STP37956S

    Committee/Subcommittee: G01.11

    DOI: 10.1520/STP37956S

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