Naphthenic corrosion using electrochemical and analytical techniques

Simões, Alda Maria Pereira; Pereira Da Silva, Rejane Maria; Suffredini, Hugo; Santos, Luis; Bastos, Ivan Napoleão

http://hdl.handle.net/10400.9/3939

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Authors

Simões, Alda Maria Pereira

Pereira Da Silva, Rejane Maria

Suffredini, Hugo

Santos, Luis

Bastos, Ivan Napoleão

Abstract(s)

ABSTRACT: Naphthenic acid corrosion of steel was studied in a stagnant, biphasic oil/aqueous phase system, by means of electrochemical measurements and surface analysis. Corrosion was restricted to the region of the aqueous phase, as crater-shaped pits that eventually coalesced, generating a nearly uniform attack in the vicinity of the oil phase. In-situ electrochemical impedance spectroscopy (EIS) reveals the processes occurring at the aqueous phase, which nevertheless increase with the fraction of oil phase and with degree of acidity of the oil.

Keywords

Corrosion Naphthenic acid Electrochemical Surface analysis

URI

http://hdl.handle.net/10400.9/3939

Citation

Simões, A. M. P... [et.al.] - Naphthenic corrosion using electrochemical and analytical techniques. In: Livro de Resumos : 8as Jornadas de Corrosão e Proteção de Materiais, Fórum Tecnológico, Lisboa, 24 novembro, 2022, p. 29-30