Please use this identifier to cite or link to this item: http://bura.brunel.ac.uk/handle/2438/14063
Title: PEO Coatings with Active Protection Based on In-Situ Formed LDH-Nanocontainers
Authors: Serdechnova, M
Mohedano, M
Kuznetsov, B
Mendis, CL
Starykevich, M
Karpushenkov, S
Tedim, J
Ferreira, MGS
Blawert, C
Zheludkevich, ML
Keywords: AA2024;Plasma electrolytic oxidation;Layered double hydroxides;Corrosion inhibitor
Issue Date: 2016
Publisher: Electrochemical Society
Citation: Journal of The Electrochemical Society, 164 (2): pp. C36 - C45,(2016)
Abstract: In the present work, for the first time Zn-Al layered double hydroxide (LDH) nanocontainers were grown in-situ on the surface and in the pores of plasma electrolytic oxidation (PEO) layer and then loaded with a corrosion inhibitor to provide an active protection. The developed LDH-based conversion process ensures partial sealing of the pores and provides an effective corrosion inhibition on demand leading to increased fault-tolerance and self-healing properties. The structure, morphology and composition of the LDH-sealed PEO coatings on 2024 aluminum alloy were investigated using SEM, TEM/FIB, XRD and GDOES. Electrochemical impedance spectroscopy and scanning vibrating electrode techniques show a remarkable increase in the corrosion resistance and fault tolerance when PEO coating is sealed with a LDH-inhibitor treatment.
URI: http://bura.brunel.ac.uk/handle/2438/14063
DOI: http://dx.doi.org/10.1149/2.0301702jes
ISSN: 0013-4651
1945-7111
Appears in Collections:Brunel Centre for Advanced Solidification Technology (BCAST)

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