Producción Científica Profesorado

Corrosion behavior of carbon steel in sour waste water varying pH



Veloz Rodríguez, María Aurora

2010

Corrosion behavior of carbon steel in sour waste wáter varying pH. 61 st Annual Meeting of the International Society of Electrochemistry, Nice France, del 26 de septiembre al 1 de octubre del 2010. María Aurora Veloz Rodríguez, Estella María Esparza Zúñiga, Jorge Uruchurtu Chavarín, Victor E. Reyes Cruz. Archivo ise100631 (Dr. Victor y Dra. Aurora).


Abstract


In this work, the corrosion behavior of carbon steel AISI 1018 immersed in a sour water sample solution collected from a refinery plant, was studied, changing the pH from 5.5 to 8.5, stirring at 500 rpm and at 50C. Polarization curves indicate that both the anodic and the cathodic branch are not sensitive to pH change, but analysis of surface samples by scanning electron microscopy (SEM) shows different corrosion products. The results of electrochemical noise (current) show that the increase in pH would present localized attack and hence the corrosion rate is higher so the corrosion products formed could not be protective. On the other hand when the solution is more acidic (i.e. lower pH) will be showing a tendency to repassivation. However, at pH 8.5 the current oscillations were not intense and reached minimum amplitude, so localized attack is inhibited. These results have shown that variation in pH units can cause changes in the structure of the corrosion products and in localized attack and thus the severity of damage in the metal surface varies.



Producto de Investigación UAEH




Artículos relacionados

Evaluación de compuestos orgánicos como inhibidores de corrosión en medio ácido

Caracterización electroquímica de membranas líquidas soportadas para la extracción de Gd (III)

Corrosion of Carbon Steel in Sour Water From the Oil Industry: the Effect of Temperature

Recuperación de plata proveniente de placas radiográficas utilizando un reactor electroquímico tipo ...

Electrorremediación de suelos arenosos contaminados por Pb, Cd y As provenientes de residuos mineros...

Corrosión de acero al carbono en una solución tipo NACE TM 0177 y NACE ID 196 en presencia de hidroc...

Comparación electroquímica de compuestos quirales tipo imina

Comparación electroquímica de compuestos quirales tipo imina

Recuperación de Ag sobre Acero Inoxidable en un Reactor electroquímico Tipo Prensa

Mecanosíntesis: síntesis en estado sólido de compuestos orgánicos nitrogenados de tipo imina