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MULTIFRACTALITY IN AN ELECTROCHEMICAL NOISE SIGNAL BY A BIOCORROSION SYSTEM

M. AMAYA

Programa de Investigacion y Desarrollo en Ductos, Instituto Mexicano del Petroleo, Mexico

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E. SOSA

Programa de Investigacion y Desarrollo en Ductos, Instituto Mexicano del Petroleo, Mexico

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J. M. ROMERO

Programa de Investigacion y Desarrollo en Ductos, Instituto Mexicano del Petroleo, Mexico

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J. ALVAREZ-RAMIREZ

Division de Ciencias Basicas e Ingenieria, Universidad Autonoma Metropolitana, Mexico

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M. MERAZ

Departamento de Biotecnologia, Universidad Autonoma Metropolitana-Iztapalapa, Mexico

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, and

H. PUEBLA

Programa de Investigacion en Matematicas Aplicadas y Computacion, Instituto Mexicano del Petroleo, Eje Central Lazaro Cardenas 152, Col. San Bartolo Atepehuacan, Mexico D. F., 07730, Mexico

Corresponding author.

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https://doi.org/10.1142/S0218348X04002598Cited by:7 (Source: Crossref)

Abstract

An analysis of multifractal characteristics of the potential time series of electrochemical noise generated during surface corrosion is performed. The generalized Hurst exponent, called H_q, is computed for potential fluctuations induced for steel corroding by a sulphate reducing bacterial consortia. The results indicate evidence of multifractal behavior in the sense that the qth-order (roughness) Hurst exponent H_q varies with changes in q. This multifractal structure is corroborated by means of microscopy inspection of the corroded surface.

Keywords:

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