Synergistic Protection against Corrosion of AA2024-T3 by Sol-Gel Coating Modified with La and Mo-Enriched Zeolites
authors Dias, SAS; Lamaka, SV; Diamantino, TC; Ferreira, MGS
nationality International
journal JOURNAL OF THE ELECTROCHEMICAL SOCIETY
keywords ALUMINUM; INHIBITION; NANOCONTAINERS; PERFORMANCE; ALLOY
abstract The present work demonstrates an improvement in corrosion protection of sol-gel coatings modified with a mixture of lanthanum and molybdate-enriched zeolite microparticles (La+Mo) due to synergistic effect between lanthanum and molybdate. The effect of these inhibitor species on protection of AA2024-T3 substrate has been studied by Electrochemical Impedance Spectroscopy and Localized Electrochemical Impedance Spectroscopy. Both techniques revealed an enhanced protection when compared with the case where the inhibitors were Used alone. The inhibiting mechanism could involve on demand release of molybdate and lanthanum ions from the loaded zeolite followed by the formation of molybdenum oxide/hydroxide and a Mo-Na-La compound on intermetallic particles. (C) 2014 The Electrochemical Society. All rights reserved.
publisher ELECTROCHEMICAL SOC INC
issn 0013-4651
year published 2014
volume 161
issue 4
beginning page C215
ending page C222
digital object identifier (doi) 10.1149/2.064404jes
web of science category Electrochemistry; Materials Science, Coatings & Films
subject category Electrochemistry; Materials Science
unique article identifier WOS:000333549500038
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journal analysis (jcr 2017):
journal impact factor 3.662
5 year journal impact factor 3.520
category normalized journal impact factor percentile 79.088
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