Corrosion protection of AA2024-T3 by LDH conversion films. Analysis of SVET results
authors Tedim, J; Bastos, AC; Kallip, S; Zheludkevich, ML; Ferreira, MGS
nationality International
journal ELECTROCHIMICA ACTA
author keywords SVET; 2024-T3 aluminium alloy; neutral inhibition; pitting corrosion; LDH films
keywords ALUMINUM-ALLOY 2024-T3; INHIBITION; AL; CHROMATE; COATINGS; METALS
abstract In this work the protective effect of layered double hydroxide (LDH) films directly grown on the surface of 2024-T3 aluminium alloy is investigated using electrochemical impedance spectroscopy (EIS) and the scanning vibrating electrode technique (SVET). The SVET results focused on the localised nature of the corrosion process and are in agreement with the global response measured by EIS. Furthermore, the evolution of active corrosion protection rendered by LDH films is surveyed at microscale for the first time for long immersion periods in NaCl solution and in the presence of induced defects. The quantitative information provided by SVET is discussed and a parameter to describe the degree of corrosion localisation is introduced based on LDH systems. (C) 2016 Elsevier Ltd. All rights reserved.
publisher PERGAMON-ELSEVIER SCIENCE LTD
issn 0013-4686
year published 2016
volume 210
beginning page 215
ending page 224
digital object identifier (doi) 10.1016/j.electacta.2016.05.134
web of science category Electrochemistry
subject category Electrochemistry
unique article identifier WOS:000380746100028
  ciceco authors
  impact metrics
times cited (wos core): 6
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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