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Corrosión de acero galvanizado en un ambiente que contiene cloruros y sulfatos mediante técnicas electroquímicas

Authors: Darío Yesid Peña Ballesteros; Anderson Sandoval Amador; Hugo Armando Estupiñán Durán; Deisy Sierra Fajardo; Leidy Quintero Ascanio;

Corrosión de acero galvanizado en un ambiente que contiene cloruros y sulfatos mediante técnicas electroquímicas

Abstract

Se estudió el comportamiento de la corrosión en láminas de acero galvanizado, inmersas en soluciones con diferentes concentraciones de NaCl y Na2SO4. Las láminas de acero se sumergieron empleando un elevador de muestras, con el fin de simular una atmosfera, donde las láminas estuvieran siempre interactuando con el medio corrosivo. El deterioro del galvanizado se evaluó mediante espectroscopia de impedancia electroquímica y curvas potenciodinámicas. La morfología del ataque se analizó por microscopía electrónica de barrido y la composición de los productos de corrosión se determinó por EDX y DRX. Los resultados tras 30 días mostraron que el potencial de corrosión del galvanizado aumentó en el tiempo, lo que corrobora la formación de productos pasivos sobre la superficie; la velocidad de corrosión también aumentó, originando corrosión por picado. Para los primeros días de exposición se obtuvo una corrosión generalizada como consecuencia de productos, de naturaleza pasiva, porosa y de color blanco.

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Keywords

acero galvanizado, pruebas electroquímicas, T1-995, corrosión atmosférica, TA1-2040, Engineering (General). Civil engineering (General), Technology (General)

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
2
Average
Average
Average
gold