Current distribution in double-cylinder electrolyte cells: Application to the study of corrosion properties of organic coatings - Sorbonne Université Access content directly
Journal Articles Progress in Organic Coatings Year : 2012

Current distribution in double-cylinder electrolyte cells: Application to the study of corrosion properties of organic coatings

Abstract

The ionic conductivity of an applied organic coating has been investigated using numerical finite element modelling and a double-cylinder electrochemical cell. The experimental results show that electrochemical impedance spectroscopy is able to account for ionic conductivity property of applied organic coatings in a flexible manner. Electrochemical impedance measurements performed in a combination of three and four-electrode arrangement allows the parallel impedance to be obtained, which corresponds to the current flow parallel to the metal-coating interface. In the three-electrode arrangement the classical barrier property is measured because all the current flows through the coating towards the metallic substrate. The parallel impedance is obtained by combining the three-electrode measurement with the four-electrode where a part of the current is forced to circulate also through the coating but parallel direction to the metal-coating interface.

Dates and versions

hal-00787199 , version 1 (11-02-2013)

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Cite

E. Lopez-Quiroga, Xosé Ramon Novoa, C. Pérez, Vincent Vivier. Current distribution in double-cylinder electrolyte cells: Application to the study of corrosion properties of organic coatings. Progress in Organic Coatings, 2012, 74 (2), pp.400-404. ⟨10.1016/j.porgcoat.2011.11.003⟩. ⟨hal-00787199⟩
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