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Preparation and performance of a novel multifunctional plasma electrolytic oxidation composite coating formed on magnesium alloy

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Abstract

Plasma electrolytic oxidation (PEO) in an alkaline phosphate electrolyte was used to produce a novel multifunctional polytetrafluoroethylene (PTFE)-containing oxide composite coatings on AM60B magnesium alloys. The composition and microstructure of the PTFE-containing PEO coatings were analyzed by X-ray photoelectron spectroscope (XPS), X-ray diffraction (XRD), and scanning electron microscope (SEM). The electrochemical corrosion behavior, tribological properties, and wetting properties of the PTFE-containing PEO composite coatings were evaluated using potentiodynamic polarization measurements, a reciprocating ball-on-disk tribometer, and a contact angle meter, respectively. Results show that the PTFE-containing PEO composite coatings exhibited superior corrosion resistance, excellent self-lubricating property, and better hydrophobic property when compared with pure PEO coatings, and will be the attractive advanced materials for a wide range of functional applications.

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Acknowledgements

The financial support from the NSFC (Grant No.50772115), the prearranged project of General Armament Department (maintenance techniques subject) and Innovation China UK (ICUK) funding are gratefully acknowledged.

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Correspondence to Liping Wang.

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Guo, J., Wang, L., Wang, S.C. et al. Preparation and performance of a novel multifunctional plasma electrolytic oxidation composite coating formed on magnesium alloy. J Mater Sci 44, 1998–2006 (2009). https://doi.org/10.1007/s10853-009-3291-4

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  • DOI: https://doi.org/10.1007/s10853-009-3291-4

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