Corrosion Behavior of Al in Ethanol–Gasoline Blends

Alfredo Brito-Franco, Jorge Uruchurtu, Isai Rosales-Cadena, Roy Lopez-Sesenes, Sergio Alonso Serna-Barquera, Jose Alfredo Hernandez-Perez, Caroline Rocabruno-Valdes and Jose Gonzalo Gonzalez-Rodriguez
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Alfredo Brito-Franco: Centro de Investigación en Ingeniería y Ciencias Aplicadas, Universidad Autonoma del Estado de Morelos, Cuernavaca 62209, Mexico
Jorge Uruchurtu: Centro de Investigación en Ingeniería y Ciencias Aplicadas, Universidad Autonoma del Estado de Morelos, Cuernavaca 62209, Mexico
Isai Rosales-Cadena: Centro de Investigación en Ingeniería y Ciencias Aplicadas, Universidad Autonoma del Estado de Morelos, Cuernavaca 62209, Mexico
Roy Lopez-Sesenes: Facultad de Ciencias Quimicas e Ingeniería, Universidad Autonoma del Estado de Morelos, Cuernavaca 62209, Mexico
Sergio Alonso Serna-Barquera: Centro de Investigación en Ingeniería y Ciencias Aplicadas, Universidad Autonoma del Estado de Morelos, Cuernavaca 62209, Mexico
Jose Alfredo Hernandez-Perez: Centro de Investigación en Ingeniería y Ciencias Aplicadas, Universidad Autonoma del Estado de Morelos, Cuernavaca 62209, Mexico
Caroline Rocabruno-Valdes: Centro de Investigación en Ingeniería y Ciencias Aplicadas, Universidad Autonoma del Estado de Morelos, Cuernavaca 62209, Mexico
Jose Gonzalo Gonzalez-Rodriguez: Centro de Investigación en Ingeniería y Ciencias Aplicadas, Universidad Autonoma del Estado de Morelos, Cuernavaca 62209, Mexico

Energies, 2020, vol. 13, issue 21, 1-17

Abstract: The corrosion behavior of pure aluminum (Al) in 20 v/v % ethanol–gasoline blends has been studied using electrochemical techniques. Ethanol was obtained from different fruits including sugar cane, oranges, apples, or mangos, whereas other techniques included lineal polarization resistance, electrochemical noise, and electrochemical impedance spectroscopy for 90 days. Results have shown that corrosion rates for Al in all the blends were higher than that obtained in gasoline. In addition, the highest corrosion rate was obtained in the blend containing ethanol obtained from sugar cane. The corrosion process was under charge transfer control in all blends; however, for some exposure times, it was under the adsorption/desorption control of an intermediate compound. Al was susceptible to a localized, plotting type of corrosion in all blends, but they were bigger in size and in number in the blend containing ethanol obtained from sugar cane.

Keywords: Al; ethanol–gasoline blends; corrosion behavior (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
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