Producción CyT
Artículo
Autoría
GONZALEZ, MARIA BELEN
;
Saidman, Silvana Beatriz
Fecha
2012
Editorial y Lugar de Edición
ELSEVIER SCIENCE SA
Revista
PROPRESS IN ORGANIC COATINGS,
vol. 75
(pp. 178-183)
ELSEVIER SCIENCE SA
Resumen
Información suministrada por el agente en
SIGEVA
The corrosion performance of a polypyrrole coating constituted by hollow rectangular microtubes was monitored in chloride solutions using open circuit potential measurements, potentiostatic polarization and electrochemical impedance spectroscopy. The coating was electrosynthesized onto 316 L stainless steel from a salicylate solution and it provided a very good corrosion resistance to the substrate. It was found that polypyrrole films with granular morphology electrodeposited from a salicylate ...
The corrosion performance of a polypyrrole coating constituted by hollow rectangular microtubes was monitored in chloride solutions using open circuit potential measurements, potentiostatic polarization and electrochemical impedance spectroscopy. The coating was electrosynthesized onto 316 L stainless steel from a salicylate solution and it provided a very good corrosion resistance to the substrate. It was found that polypyrrole films with granular morphology electrodeposited from a salicylate solution with lower concentration behave better in terms of protective behavior. In order to improve the corrosion protection imparted by the polypyrrole coating formed by the microtubes a system of two layers was electrodeposited, the first one consisted of polypyrrole with a granular morphology and the second one, on the top, was constituted by the microtubes. This bilayered system exhibited an excellent protective behavior during considerably long immersion time.
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Palabras Clave
ELECTROCHEMICAL IMPEDANCE SPECTROSCOPYSALICYLATECORROSION PROTECTIONPOLYPYRROLEOPEN CIRCUIT-POTENTIALMICROTUBES
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