Influence of preparation conditions of Layered Double Hydroxide conversion films on corrosion protection

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abstract

In this work, layered double hydroxide (LDH) conversion films were grown on aluminium alloy 2024 substrates. The effect of experimental conditions on the growth of LDH conversion films, including concentration of reactants and presence of corrosion inhibitor, was investigated. The protective performance provided by LDH films was assessed by electrochemical impedance spectroscopy (EIS), and rationalised in terms of structural and morphological characteristics surveyed by X-ray diffraction (XRD) and scanning electron microscopy (SEM), respectively. The results show that corrosion protection increases when corrosion inhibitors (vanadates) are intercalated in LDHs and dilute solutions of Zn2+ are used to grow LDHs, (C) 2013 Elsevier Ltd. All rights reserved.

keywords

ALUMINUM-ALLOY; MG ALLOY; COATINGS; INHIBITION; RESISTANCE; CHITOSAN; NANOCONTAINERS

subject category

Electrochemistry

authors

Tedim, J; Zheludkevich, ML; Bastos, AC; Salak, AN; Lisenkov, AD; Ferreira, MGS

our authors

no photo

Aleksey Lisenkov

Researcher
foto Andrei Salak

Andrei Salak

Principal Researcher
foto António Alexandre Cunha Bastos

António Alexandre Cunha Bastos

Assistant Researcher
foto João Tedim

João Tedim

Associate Professor
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

Multifunctional nanostructured conversion films based on Layered Double hydroxides for corrosion protection of aeronautical structures (PTDC/CTM-MAT/1515/2012)

Centre for Research in Ceramics and Composite Materials - CICECO (LA0011: 2013-2014) (PEst-C/CTM/LA0011/2013)

acknowledgements

The authors thank FCT for funding through the project with reference PTDC/CTM-MAT/1515/2012 and CICECO (ref. PEst-C/CTM/LA0011/2013).

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Publication Details

type
Journal Article
year
2014
journal
ELECTROCHIMICA ACTA
volume
117
publisher
PERGAMON-ELSEVIER SCIENCE LTD
issn
0013-4686
digital object identifier
10.1016/j.electacta.2013.11.111
web of science article identifier
WOS:000332812300024

Journal Metrics (JCR 2019)

Journal Impact Factor
6.215
Journal Impact Factor (5 yrs)
5.478
category normalized journal percentile
83.333

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