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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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Fulltext.pdf | 1.9 MB | Adobe PDF | View/Open |
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