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Barrier property determination and lifetime prediction by electrochemical impedance spectroscopy of a high performance organic coating

CALDERÓN-GUTIERREZ, JORGE ANDRÉS and BEDOYA-LORA, FRANKY ESTEBAN (2014) Barrier property determination and lifetime prediction by electrochemical impedance spectroscopy of a high performance organic coating. DYNA; Vol. 81, núm. 183 (2014); 97-106 Dyna; Vol. 81, núm. 183 (2014); 97-106 2346-2183 0012-7353 .

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URL oficial: http://revistas.unal.edu.co/index.php/dyna/article...

Resumen

The anticorrosion performance of an Epoxy-Mastic organic coating was evaluated during continuous immersion in saline solution using electrochemical impedance spectroscopy (EIS). The typical parameters of pore resistance and charge transfer resistance were determined employing an equivalent electric circuit. Constant phase elements (CPE) were used in order to determine fraction of water absorbed, mass diffusion, solubility and the swelling coefficients, as well as to predict the failure times of the coating. The results found by EIS measurements match very well with the high resistance to deterioration exhibited by the coating. It was also found that the excellent protection performance of the coating was mainly due to low water solubility and low permeability.

Tipo de documento:Artículo - Article
Información adicional:Derechos de autor reservados
Palabras clave:organic coatings, electrochemical impedance spectroscopy, water diffusion, delaminated area, failure time prediction
Unidad administrativa:Revistas electrónicas UN > Dyna
Código ID:36681
Enviado por : Dirección Nacional de Bibliotecas STECNICO
Enviado el día :02 Julio 2014 16:39
Ultima modificación:18 Agosto 2014 21:38
Ultima modificación:18 Agosto 2014 21:38
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