Active corrosion protection of AA2024 by sol-gel coatings with cerium molybdate nanowires
authors Yasakau, KA; Kallip, S; Zheludkevich, ML; Ferreira, MGS
nationality International
journal ELECTROCHIMICA ACTA
author keywords Sol-gel; AA2024; Inhibitor; Cerium molybdate nanowires; Active corrosion protection
keywords ATOMIC-FORCE MICROSCOPY; ALUMINUM-ALLOY; LOCALIZED CORROSION; CONVERSION COATINGS; PITTING CORROSION; ORGANIC COATINGS; HYBRID COATINGS; PART II; INHIBITION; CHROMATE
abstract Amorphous cerium molybdate nanowires (CMN) have been used to impart active corrosion protective properties to hybrid sol-gel coatings on AA2024. Inhibitive ability of the novel sal-gel coatings against corrosion has been studied in detail by electrochemical impedance spectroscopy (EIS) and scanning vibrating electrode technique (SVET). Localized electrochemical measurements demonstrate significant suppression of corrosion activity in micro-scale defects made in sal-gel coatings loaded with CMN when compared to blank systems. The mechanism of active protection involves release of cerium and molybdate ions from the sal-gel coating during immersion in NaCl electrolyte and their inhibiting action in corroding defects. Crown Copyright (C) 2013 Published by Elsevier Ltd. All rights reserved.
publisher PERGAMON-ELSEVIER SCIENCE LTD
issn 0013-4686
year published 2013
volume 112
beginning page 236
ending page 246
digital object identifier (doi) 10.1016/j.electacta.2013.08.126
web of science category Electrochemistry
subject category Electrochemistry
unique article identifier WOS:000329886100032
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journal impact factor (jcr 2016): 4.798
5 year journal impact factor (jcr 2016): 4.630
category normalized journal impact factor percentile (jcr 2016): 87.931
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