RT journal article T1 Using EIS to analyse samples of Al–Mg alloy AA5083 treated by thermal activation in cerium salt baths A1 Bethencourt Núñez, Manuel A1 Botana Pedemonte, Francisco Javier A1 Cano, M.J. A1 Marcos Bárcena, Mariano A1 Sánchez Amaya, José María A1 González Rovira, Leandro A2 Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica AB This paper describes a study undertaken of the morphological and anticorrosive characteristics of surface layers formed on the Al–Mg alloy AA5083 from solutions of Ce(III), by means of various heat treatments while immersed in baths of cerium salts. SEM/EDS studies have demonstrated the existence of a heterogeneous layer formed by a film of aluminium oxide/hydroxide on the matrix and a series ofdispersed islands of cerium deposited on the cathodic intermetallics. With the object of evaluating the degree of protection provided by the layers formed and of characterising the particular contribution of the electrochemical response of the system in NaCl, the results obtained by means of EIS are presented and discussed PB Elsevier SN 0010-938X YR 2008 FD 2008 LK http://hdl.handle.net/10498/30293 UL http://hdl.handle.net/10498/30293 LA eng DS Repositorio Institucional de la Universidad de Cádiz RD 13-nov-2026