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Chemical and Biochemical Engineering Quarterly, Vol. 33 No. 2, 2019.

Original scientific paper

https://doi.org/10.15255/CABEQ.2019.1618

Electrochemical Behavior of AISI 1020 Steel in Type C Commercial Gasolines

R. M. Fonseca orcid id orcid.org/0000-0002-7080-7446 ; Department of Chemical Engineering, Engineering School, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte/MG, Brazil
R. A. D. Faria ; Department of Chemical Engineering, Engineering School, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte/MG, Brazil
J. C. da Silva Evangelista ; Department of Chemical Engineering, Engineering School, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte/MG, Brazil
L. H. O. Souza ; Department of Chemical Engineering, Engineering School, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte/MG, Brazil
B. A. Batista ; Department of Chemical Engineering, Engineering School, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte/MG, Brazil
R. B. Soares ; Department of Chemical Engineering, Engineering School, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte/MG, Brazil
V. de Freitas Cunha Lins ; Department of Chemical Engineering, Engineering School, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte/MG, Brazil

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Abstract

In the present paper, the corrosion behavior of 1020 carbon steel in commercial gasoline-ethanol blends was investigated. The composition of each gasoline-ethanol blend was evaluated by infrared spectroscopy, and the ethanol content was determined by the ABNT 13992 reference method. Electrochemical Impedance Spectroscopy (EIS) and polarization methods were employed to evaluate corrosion resistance and penetration rates. Statistical analyses revealed that the gasoline’s solution resistance governs the corrosion process, the RON (Research Octane Number) and MON (Motor Octane Number)
numbers as well as the olefin content being more related to the corrosion rates. The polarization resistance had minor impact on the corrosion process.







This work is licensed under a Creative Commons Attribution 4.0 International License.

Keywords

ethanol-gasoline blends; carbon steel; corrosion; electrochemical impedance spectroscopy; polarization

Hrčak ID:

223893

URI

https://hrcak.srce.hr/223893

Publication date:

31.7.2019.

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