Empleo del método electroquímico acelerado AC-DC-AC para la predicción del tiempo de vida útil de pinturas base agua

M. Bethencourt; F. J. Botana; L. González-Rovira; M. Marcos; R. M. Osuna

doi:10.3989/revmetalm.2005.v41.iExtra.1059

Lifetime prediction of water-borne paints with the AC-DC-AC accelerated electrochemical method

Authors

M. Bethencourt Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica. Universidad de Cádiz. Facultad de Ciencias del Mar y Ambientales
F. J. Botana Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica. Universidad de Cádiz. Facultad de Ciencias del Mar y Ambientales
L. González-Rovira Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica. Universidad de Cádiz. Facultad de Ciencias del Mar y Ambientales
M. Marcos Dpto. de Ingeniería Mecánica y Diseño Industrial, Escuela Superior de Ingeniería, Cádiz
R. M. Osuna Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica. Universidad de Cádiz. Facultad de Ciencias del Mar y Ambientales

DOI:

https://doi.org/10.3989/revmetalm.2005.v41.iExtra.1059

Keywords:

Water-borne paints, Coated steel, Electrochemical impedance spectroscopy, Accelerated tests, Cathodic delamination

Abstract

In this study an accelerated method for the evaluation of painted metals is proposed. Specifically, the proposed method has been applied in a study of the process of degradation of two water-based paints applied to a carbon steel surface. The technique is based on the application of cycles combining measurement of electrochemical impedance spectra, cathodic polarisation steps, and recording of the evolution of the corrosion potential of the system in function of time. The results obtained from this method are compared with those obtained from studying the evolution of the impedance spectra of both systems in function of the time of immersion, for periods of immersion of the order of 200 days.

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Published

2005-12-17

How to Cite

Bethencourt, M., Botana, F. J., González-Rovira, L., Marcos, M., & Osuna, R. M. (2005). Lifetime prediction of water-borne paints with the AC-DC-AC accelerated electrochemical method. Revista De Metalurgia, 41(Extra), 374–378. https://doi.org/10.3989/revmetalm.2005.v41.iExtra.1059

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Issue

Vol. 41 No. Extra (2005)

Section

Articles

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