Producción Científica Profesorado

Effect of Some Pyridine Derivatives on the Corrosion Behavior of Carbon Steel in an Environment Like NACE TM0177



Veloz Rodríguez, María Aurora

2006

Effect of Some Pyridine Derivatives on the Corrosion Behavior of Carbon Steel in an environment like NACE TM0177. M.A. Veloz, I. González; Aceptado para su publicación en Corrosion Journal de la NACE para Mayo 2006. http://dx.doi.org/10.5006/1.3280661


Abstract


An electrochemical study of corrosion behavior for carbon steel in a solution like NACE TM0177 after adding pyridine derivatives is presented. Weight-loss measurements, as the modification of corrosion potentials toward less negative potentials (in linear polarization) in the presence of pyridine compounds, indicated the inhibition of the corrosion process; however, potentiodynamic polarization curves showed an acceleration of the oxidation process. An analysis of the electrochemical impedance spectroscopy (EIS) spectra by equivalent circuit fitting showed charge-transfer resistances that also indicate an activation of the corrosion process. The absence of a corrosion product film shown by scanning electron microscopy (SEM) confirms the results obtained with the electrochemical techniques used in this work. The effect of the pyridine compounds was observed through the modification on the adsorbing species of the double layer through the time constants obtained in the equivalent circuit analysis.



Producto de Investigación




Artículos relacionados

Comparación electroquímica de compuestos quirales tipo imina

Influencia del área, el potencial y la velocidad lineal de flujo en la recuperación selectiva de Dor...

Comparación electroquímica de compuestos quirales tipo imina

Microwave-assisted synthesis of 2-(2-pyridyl)azoles. Study of their corrosion inhibiting properties

Evaluación de un derivado piridínico como inhibidor de corrosión en medio ácido

Pyrite?Arsenopyrite Galvanic Interaction and Electrochemical Reactivity

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

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

Recuperación de plata a partir de efluentes radiográficos

Recubrimiento del acero inoxidable A304 con Ag proveniente de los desechos de la industria fotográfi...