RT info:eu-repo/semantics/article
T1 Electrochemical behaviour of AISI 316 austenitic stainless steel in acidic media containing chloride ions
A1 Souto, Ricardo Manuel
A1 Ait Albrimi, Y.
A1 Eddib, A.
A1 Douch, J.
A1 Berghoute, Y.
A1 Hamdani, M.
K1 Pitting corrosion
K1 AISI 316 stainless steel
K1 hydrochloric and sulphuric acids
K1 chloride ions
K1 pit nucleation
AB The electrochemical behaviour of AISI 316 austenitic stainless steel (SS) was investigated in deaerated hydrochloric and sulphuric acid solutions using the open-circuit potential, cyclic voltammetric and chronoamperometric techniques. Enhanced corrosion of steel samples occurred with bigger HCl concentrations, as the potential range of passivity was shortened and both the pitting (Epit) and the protection potentials (Eprot) became less noble. Conversely, the SS electrodes exhibited a greater corrosion resistance in solutions containing sulphuric acid of the same concentration. The aggressive effect of chloride ions towards steel corrosion was also investigated through controlled additions of NaCl to both electrolytic media and the analysis of the corresponding effects on the shape of the voltammetric curves. Chronoamperometric measurements run by setting different potential values to steel electrodes allowed the determination of the induction time for pit initiation, and the rates of pit nucleation and pit growth
YR 2011
FD 2011
LK http://riull.ull.es/xmlui/handle/915/19031
UL http://riull.ull.es/xmlui/handle/915/19031
LA en
DS Repositorio institucional de la Universidad de La Laguna
RD 13-nov-2024