Characterisation and Electrochemical Evaluation of Plasma Electrolytic Oxidation Coatings on Magnesium with Plasma Enhanced Chemical Vapour Deposition Post-Treatments

Ming Sun; Aleksey Yerokhin; Allan Matthews; Michael Thomas; Artur Laukart; Margret Von Hausen; Claus Peter Klages

doi:10.1002/ppap.201500059

Characterisation and Electrochemical Evaluation of Plasma Electrolytic Oxidation Coatings on Magnesium with Plasma Enhanced Chemical Vapour Deposition Post-Treatments

Ming Sun, Aleksey Yerokhin^*, Allan Matthews, Michael Thomas, Artur Laukart, Margret Von Hausen, Claus Peter Klages

^*Corresponding author for this work

Materials Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

Plasma enhanced chemical vapour deposition (PECVD) post-treatment with three different precursors is employed to improve corrosion resistance of plasma electrolytic oxidation (PEO) coated Mg. Surface morphology, chemical and phase composition are characterised by SEM, EDS, and XRD analyses, whereas corrosion resistance is assessed by electrochemical tests. PECVD post-treatments can significantly affect PEO coatings, resulting in sealed pores and multi-layered inner barrier structure. Depending on the precursor, this can have both positive and negative influence on the corrosion resistance of the PEO coatings. The PECVD post-treatment with hexamethyldisiloxane precursor significantly improves corrosion resistance of PEO coatings, providing the best corrosion protection of Mg.

Original language	English
Pages (from-to)	266-278
Number of pages	13
Journal	Plasma Processes and Polymers
Volume	13
Issue number	2
DOIs	https://doi.org/10.1002/ppap.201500059
Publication status	Published - 5 Feb 2016

Keywords

corrosion
electrochemical measurements
plasma electrolytic oxidation
plasma-enhanced chemical vapour deposition
post-treatment

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title = "Characterisation and Electrochemical Evaluation of Plasma Electrolytic Oxidation Coatings on Magnesium with Plasma Enhanced Chemical Vapour Deposition Post-Treatments",

abstract = "Plasma enhanced chemical vapour deposition (PECVD) post-treatment with three different precursors is employed to improve corrosion resistance of plasma electrolytic oxidation (PEO) coated Mg. Surface morphology, chemical and phase composition are characterised by SEM, EDS, and XRD analyses, whereas corrosion resistance is assessed by electrochemical tests. PECVD post-treatments can significantly affect PEO coatings, resulting in sealed pores and multi-layered inner barrier structure. Depending on the precursor, this can have both positive and negative influence on the corrosion resistance of the PEO coatings. The PECVD post-treatment with hexamethyldisiloxane precursor significantly improves corrosion resistance of PEO coatings, providing the best corrosion protection of Mg.",

keywords = "corrosion, electrochemical measurements, plasma electrolytic oxidation, plasma-enhanced chemical vapour deposition, post-treatment",

author = "Ming Sun and Aleksey Yerokhin and Allan Matthews and Michael Thomas and Artur Laukart and {Von Hausen}, Margret and Klages, {Claus Peter}",

year = "2016",

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doi = "10.1002/ppap.201500059",

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TY - JOUR

T1 - Characterisation and Electrochemical Evaluation of Plasma Electrolytic Oxidation Coatings on Magnesium with Plasma Enhanced Chemical Vapour Deposition Post-Treatments

AU - Sun, Ming

AU - Yerokhin, Aleksey

AU - Matthews, Allan

AU - Thomas, Michael

AU - Laukart, Artur

AU - Von Hausen, Margret

AU - Klages, Claus Peter

PY - 2016/2/5

Y1 - 2016/2/5

N2 - Plasma enhanced chemical vapour deposition (PECVD) post-treatment with three different precursors is employed to improve corrosion resistance of plasma electrolytic oxidation (PEO) coated Mg. Surface morphology, chemical and phase composition are characterised by SEM, EDS, and XRD analyses, whereas corrosion resistance is assessed by electrochemical tests. PECVD post-treatments can significantly affect PEO coatings, resulting in sealed pores and multi-layered inner barrier structure. Depending on the precursor, this can have both positive and negative influence on the corrosion resistance of the PEO coatings. The PECVD post-treatment with hexamethyldisiloxane precursor significantly improves corrosion resistance of PEO coatings, providing the best corrosion protection of Mg.

AB - Plasma enhanced chemical vapour deposition (PECVD) post-treatment with three different precursors is employed to improve corrosion resistance of plasma electrolytic oxidation (PEO) coated Mg. Surface morphology, chemical and phase composition are characterised by SEM, EDS, and XRD analyses, whereas corrosion resistance is assessed by electrochemical tests. PECVD post-treatments can significantly affect PEO coatings, resulting in sealed pores and multi-layered inner barrier structure. Depending on the precursor, this can have both positive and negative influence on the corrosion resistance of the PEO coatings. The PECVD post-treatment with hexamethyldisiloxane precursor significantly improves corrosion resistance of PEO coatings, providing the best corrosion protection of Mg.

KW - corrosion

KW - electrochemical measurements

KW - plasma electrolytic oxidation

KW - plasma-enhanced chemical vapour deposition

KW - post-treatment

U2 - 10.1002/ppap.201500059

DO - 10.1002/ppap.201500059

M3 - Article

AN - SCOPUS:84959098544

SN - 1612-8850

VL - 13

SP - 266

EP - 278

JO - Plasma Processes and Polymers

JF - Plasma Processes and Polymers

IS - 2

ER -

Characterisation and Electrochemical Evaluation of Plasma Electrolytic Oxidation Coatings on Magnesium with Plasma Enhanced Chemical Vapour Deposition Post-Treatments

Abstract

Keywords

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