Producción Científica Profesorado

Corrosion behavior of carbon steel in sour waste water varying pH



Reyes Cruz, Victor Esteban

2010

María Aurora Veloz Rodríguez, Estella María Esparza Zúñiga, Jorge Uruchurtu Chavarín, Victor E. Reyes Cruz . 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.


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

Corrosión de acero AISI 1018 en aguas amargas colectadas de la industria del petróleo: efecto de la ...

Simulación del proceso de electro-remediación en arena contaminada con Pb(II

Corrosión de acero al carbono en presencia de inhibidores de corrosión e hidrocarburo

Galvanic interactions between galenasphalerite and their reactivity

Recuperación selectiva de DORE (Au-Ag) de disoluciones provenientes de la lixiviación de minerales, ...

Evaluación de la resistencia a la corrosión de aceros Pulvimetalurgicos inoxidables austéniticos sin...

Estudio electroquímico del comportamiento de la reactividad de la pirita en un mineral de arsenopiri...

Evaluación del comportamiento de un acero al carbono utilizado en tuberías para agua potable mediant...

Corrosion of carbon steel in a buffered solution like NACE TM 0177 in the presence of hydrocarbon

Analysis of the electrochemical reactivity of natural hemozoin and ?-hemozoin in the presence of ant...