Resumo

PENA-BALLESTEROS, Darío Yesid; ESTUPINAN-DURAN, Hugo Armando  e  VASQUEZ-QUINTERO, Custodio. Evaluation of the Corrosion of Duralumin in Gasoline and Bioethanol Blends. Ing. Univ. [online]. 2012, vol.16, n.1, pp.9-25. ISSN 0123-2126.

Nowadays, different countries use ethanol as a self-propulsion fuel. However, this biofuel is aggressive for metal parts in the fuel system of an automobile. In this study, we determined the corrosion rate of duralumin, a material used in the production of piston engines, in ethanol-gasoline blends at concentrations of 5 to 20%, through electrochemical impedance spectroscopy (EIS), Tafel polarization and Gravimetry. It was shown that the corrosion process control was mixed with a tendency towards localized corrosion. It is generally observed that the corrosion rate of duralumin decreases during the exposure time.

Palavras-chave : Electrochemistry - technical; mixtures; combustion gases; mensuration; duralumin; gavity anomalies; alloys corrosion.

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