Simões, Alda Maria PereiraPereira Da Silva, Rejane MariaSuffredini, HugoSantos, LuisBastos, Ivan Napoleão2022-11-212022-11-212022-11Simões, 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. 29-30http://hdl.handle.net/10400.9/3939ABSTRACT: 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.engCorrosionNaphthenic acidElectrochemicalSurface analysisconference object10.34637/4cw4-w798