Corrosion behavior of plasma electrolysis layer cross-linked with a conductive polymer coating

Tackling corrosion issues by oxide coatings has been one of the key research issues in valve metals, but these oxides are chemically vulnerable to a degradative hydration process in an aggressive environment. In this work, we highlight the role of poly3,4-ethylenedioxythiophene-polystyrenesulfunate...

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Autores principales:	M.P. Kamil, T. Suhartono, Y.G. Ko
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Plasma electrolytic oxidation PEDOT:PSS Cross-linking Composite Corrosion Mining engineering. Metallurgy TN1-997
Acceso en línea:	https://doaj.org/article/0789f26ba6f0427b8b2d6843cd517351
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spelling	oai:doaj.org-article:0789f26ba6f0427b8b2d6843cd5173512021-11-04T04:32:05ZCorrosion behavior of plasma electrolysis layer cross-linked with a conductive polymer coating2238-785410.1016/j.jmrt.2021.10.090https://doaj.org/article/0789f26ba6f0427b8b2d6843cd5173512021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2238785421012266https://doaj.org/toc/2238-7854Tackling corrosion issues by oxide coatings has been one of the key research issues in valve metals, but these oxides are chemically vulnerable to a degradative hydration process in an aggressive environment. In this work, we highlight the role of poly3,4-ethylenedioxythiophene-polystyrenesulfunate (PEDOT:PSS) in tandem with TiO2 anodically grown by plasma electrolytic oxidation on pure Ti substrate. The addition of 1–10 wt.% citric acid as cross-linking agent enables PEDOT:PSS to work properly as a protective coating under aqueous conditions. We found that excessive amounts of citric acid led to the formation of micro- and nano-scale clusters of PEDOT:PSS on TiO2 surface, which are detrimental to the barrier effect against the corrosive medium. Thus, polarization and impedance test results suggested that the use of 1 wt.% of citric acid resulted in PEDOT:PSS@TiO2 layer with superior corrosion resistance. Furthermore, analysis of space charge capacitance reveals a decrease in the donor density, as calculated from Mott–Schottky plot of PEDOT:PSS@TiO2, pertaining to its passivation effect against ion and electron diffusion.M.P. KamilT. SuhartonoY.G. KoElsevierarticlePlasma electrolytic oxidationPEDOT:PSSCross-linkingCompositeCorrosionMining engineering. MetallurgyTN1-997ENJournal of Materials Research and Technology, Vol 15, Iss , Pp 4672-4682 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Plasma electrolytic oxidation PEDOT:PSS Cross-linking Composite Corrosion Mining engineering. Metallurgy TN1-997
spellingShingle	Plasma electrolytic oxidation PEDOT:PSS Cross-linking Composite Corrosion Mining engineering. Metallurgy TN1-997 M.P. Kamil T. Suhartono Y.G. Ko Corrosion behavior of plasma electrolysis layer cross-linked with a conductive polymer coating
description	Tackling corrosion issues by oxide coatings has been one of the key research issues in valve metals, but these oxides are chemically vulnerable to a degradative hydration process in an aggressive environment. In this work, we highlight the role of poly3,4-ethylenedioxythiophene-polystyrenesulfunate (PEDOT:PSS) in tandem with TiO2 anodically grown by plasma electrolytic oxidation on pure Ti substrate. The addition of 1–10 wt.% citric acid as cross-linking agent enables PEDOT:PSS to work properly as a protective coating under aqueous conditions. We found that excessive amounts of citric acid led to the formation of micro- and nano-scale clusters of PEDOT:PSS on TiO2 surface, which are detrimental to the barrier effect against the corrosive medium. Thus, polarization and impedance test results suggested that the use of 1 wt.% of citric acid resulted in PEDOT:PSS@TiO2 layer with superior corrosion resistance. Furthermore, analysis of space charge capacitance reveals a decrease in the donor density, as calculated from Mott–Schottky plot of PEDOT:PSS@TiO2, pertaining to its passivation effect against ion and electron diffusion.
format	article
author	M.P. Kamil T. Suhartono Y.G. Ko
author_facet	M.P. Kamil T. Suhartono Y.G. Ko
author_sort	M.P. Kamil
title	Corrosion behavior of plasma electrolysis layer cross-linked with a conductive polymer coating
title_short	Corrosion behavior of plasma electrolysis layer cross-linked with a conductive polymer coating
title_full	Corrosion behavior of plasma electrolysis layer cross-linked with a conductive polymer coating
title_fullStr	Corrosion behavior of plasma electrolysis layer cross-linked with a conductive polymer coating
title_full_unstemmed	Corrosion behavior of plasma electrolysis layer cross-linked with a conductive polymer coating
title_sort	corrosion behavior of plasma electrolysis layer cross-linked with a conductive polymer coating
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/0789f26ba6f0427b8b2d6843cd517351
work_keys_str_mv	AT mpkamil corrosionbehaviorofplasmaelectrolysislayercrosslinkedwithaconductivepolymercoating AT tsuhartono corrosionbehaviorofplasmaelectrolysislayercrosslinkedwithaconductivepolymercoating AT ygko corrosionbehaviorofplasmaelectrolysislayercrosslinkedwithaconductivepolymercoating
_version_	1718445252042293248

Corrosion behavior of plasma electrolysis layer cross-linked with a conductive polymer coating

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