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Using EIS to study the electrochemical response of alloy AA5083 in solutions of NaCl
Author(s) -
Aballe A.,
Bethencourt M.,
Botana F. J.,
Osuna R.,
Marcos M.
Publication year - 2001
Publication title -
materials and corrosion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.487
H-Index - 55
eISSN - 1521-4176
pISSN - 0947-5117
DOI - 10.1002/1521-4176(200103)52:3<185::aid-maco185>3.0.co;2-o
Subject(s) - chemistry , corrosion , dielectric spectroscopy , alloy , electrochemistry , oxide , metallurgy , nuclear chemistry , materials science , electrode , organic chemistry
The corrosion behavior of alloy AA5083 in aerated solutions of NaCl has been studied. Special attention has been paid to the analysis of the electrochemical response of this alloy using Electrochemical Impedance Spectroscopy (EIS). Analysis of the obtained data has enabled an evaluation of the contributions made by each of the corrosion processes active in the system: localized alkaline corrosion in the areas surrounding the intermetallic precipitates and growth of the layer of oxide on the matrix. It has been determined that the process of localized corrosion has the greatest verifiable intensity, but this process reduces with length of exposure time.