Plasma anodized ZE41 magnesium alloy sealed with hybrid epoxy-silane coating

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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.

keywords

MICRO-ARC OXIDATION; AZ31B MG ALLOY; ELECTROLYTIC OXIDATION; CORROSION-RESISTANCE; CERAMIC COATINGS; PEO COATINGS; LI ALLOY; SURFACE; MICROSTRUCTURE; PROTECTION

subject category

Materials Science; Metallurgy & Metallurgical Engineering

authors

Ivanou, DK; Starykevich, M; Lisenkov, AD; Zheludkevich, ML; Xue, HB; Lamaka, SV; Ferreira, MGS

our authors

no photo

Aleksey Lisenkov

Junior Researcher
foto Maksim Starykevich

Maksim Starykevich

Junior Researcher
foto Mário Guerreiro Silva Ferreira

Mário Guerreiro Silva Ferreira

Retired Professor
foto Mikhail Zheludkevich

Mikhail Zheludkevich

Invited Principal Researcher

Groups

G3 - Electrochemical Materials, Interfaces and Coatings

Projects

Fault-tolerant anticorrosion coatings for magnesium alloys (PTDC/CTM-MET/112831/2009)

RMNE-UA-National Network of Electron Microscopy (REDE/1509/RME/2005 )

acknowledgements

Portuguese Foundation for Science and Technology (FCT), project Fatomag, PTDC/CTM-MET/112831/2009 and REDE/1509/RME/2005. EADS Innovation Works, Munich, for supplying the alloys.

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Publication Details

type
Journal Article
year
2013
journal
CORROSION SCIENCE
volume
73
publisher
PERGAMON-ELSEVIER SCIENCE LTD
issn
0010-938X
digital object identifier
10.1016/j.corsci.2013.04.019
web of science article identifier
WOS:000320736900032

Journal Metrics (JCR 2019)

Journal Impact Factor
6.479
Journal Impact Factor (5 yrs)
6.894
category normalized journal percentile
89.262

Citations

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