Plasma anodized ZE41 magnesium alloy sealed with hybrid epoxy-silane coating
authors Ivanou, DK; Starykevich, M; Lisenkov, AD; Zheludkevich, ML; Xue, HB; Lamaka, SV; Ferreira, MGS
nationality International
journal CORROSION SCIENCE
author keywords Magnesium; Alloy; EIS; SEM; Anodic films; Polymer coatings
keywords MICRO-ARC OXIDATION; AZ31B MG ALLOY; ELECTROLYTIC OXIDATION; CORROSION-RESISTANCE; CERAMIC COATINGS; PEO COATINGS; LI ALLOY; SURFACE; MICROSTRUCTURE; PROTECTION
abstract Anodic coatings on magnesium ZE41 alloy were formed by DC plasma electrolytic oxidation (PEO) in spark regime in solution composed of NaOH, Na2SiO3 and KF. The positive effect of poly(ethylene oxide) addition into the anodizing electrolyte on PEO process, anodic film porosity and its protective performance was described. Anodic films were sealed with hybrid epoxy-silane formulation. The corrosion behavior of the coated ZE41 was studied through electrochemical impedance spectroscopy (EIS) in 0.6 M NaCl solution. Resulting duplex PEO/epoxy-silane coating provides good protective performance without significant signs of corrosion during 1 month of immersion test. (C) 2013 Elsevier Ltd. All rights reserved.
publisher PERGAMON-ELSEVIER SCIENCE LTD
issn 0010-938X
year published 2013
volume 73
beginning page 300
ending page 308
digital object identifier (doi) 10.1016/j.corsci.2013.04.019
web of science category Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering
subject category Materials Science; Metallurgy & Metallurgical Engineering
unique article identifier WOS:000320736900032
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