Active Corrosion Protection by Nanoparticles and Conversion Films of Layered Double Hydroxides
authors Yasakau, KA; Tedim, J; Zheludkevich, ML; Ferreira, MGS
nationality International
journal CORROSION
author keywords AA2024; active corrosion protection; conversion layer; electrochemical impedance spectroscopy; inhibitor; layered double hydroxides; vanadate
keywords ALUMINUM-ALLOY 2024-T3; SOL-GEL COATINGS; ANTICORROSION COATINGS; ORGANIC COATINGS; NANOCONTAINERS; INHIBITOR; PERFORMANCE
abstract The active corrosion protection of metallic substrates can be achieved by the addition of corrosion inhibitors to protective coatings. However, direct mixing of inhibitors with coating formulations can lead to important drawbacks, decreasing barrier properties of the coating and diminishing activity of the inhibitor. Nanocontainers for corrosion inhibitors were developed in this work using layered double hydroxides (LDH) as nanocarriers. The LDH were used as nanosized particles, which are then included in a sol-gel hybrid coating, and as a LDH layer directly formed on the metal surface (conversion film) and covered by a sol-gel hybrid layer. Electrochemical impedance spectroscopy (EIS) has been used for evaluation of corrosion protective properties of the coatings. The results show that the LDH with incorporated vanadate inhibitor provide efficient active corrosion protection in both cases.
publisher NATL ASSOC CORROSION ENG
issn Oct-12
year published 2014
volume 70
issue 5
beginning page 436
ending page 445
digital object identifier (doi) 10.5006/0979
web of science category Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering
subject category Materials Science; Metallurgy & Metallurgical Engineering
unique article identifier WOS:000336662900002
  ciceco authors
  impact metrics
times cited (wos core): 3
journal impact factor (jcr 2016): 1.661
5 year journal impact factor (jcr 2016): 1.544
category normalized journal impact factor percentile (jcr 2016): 60.448
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