Preparation of Wear-Resistant Coating on Ti6Al4V Alloy by Cold Spraying and Plasma Electrolytic Oxidation

In order to improve the wear resistance of Ti6Al4V alloy, the alloy was first coated with alumina-reinforced aluminum coating (CS-coating) by cold spraying, and then the alloy with CS-coating was processed by plasma electrolytic oxidation (PEO) under unipolar mode and soft sparking mode, respectivel...

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Autores principales:	Mingzeng Shao, Wei Wang, Hongbo Yang, Xueer Zhang, Xiaomei He
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	titanium alloy cold spray plasma electrolytic oxidation soft sparking Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/63b8f362db594409ba040252a2a6b646
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spelling	oai:doaj.org-article:63b8f362db594409ba040252a2a6b6462021-11-25T17:15:36ZPreparation of Wear-Resistant Coating on Ti6Al4V Alloy by Cold Spraying and Plasma Electrolytic Oxidation10.3390/coatings111112882079-6412https://doaj.org/article/63b8f362db594409ba040252a2a6b6462021-10-01T00:00:00Zhttps://www.mdpi.com/2079-6412/11/11/1288https://doaj.org/toc/2079-6412In order to improve the wear resistance of Ti6Al4V alloy, the alloy was first coated with alumina-reinforced aluminum coating (CS-coating) by cold spraying, and then the alloy with CS-coating was processed by plasma electrolytic oxidation (PEO) under unipolar mode and soft sparking mode, respectively, to prepare wear-resistant PEO coatings. For comparison, Ti6Al4V alloy without CS-coating was also subjected to PEO treatment. The microstructure, phase composition, hardness, and wear resistance of the PEO coatings formed on Ti6Al4V alloy with and without CS-coating were investigated. The results revealed that PEO coatings formed on Ti6Al4V alloy with CS-coating under soft sparking mode contained more α-Al<sub>2</sub>O<sub>3</sub>, possessed larger thickness, more compact microstructure, and higher microhardness than that formed under unipolar mode. The PEO coating formed on Ti6Al4V substrate was mainly composed of TiO<sub>2</sub> and had pores and cracks. Among all these coatings, PEO coating formed on Ti6Al4V alloy with CS-coating under soft sparking mode exhibited the best wear resistance with a wear rate of 1.18 × 10<sup>−5</sup> mm<sup>3</sup>/(Nm), which was only 15.28% of that of the Ti6Al4V substrate. The investigation indicated that the combination of cold spraying and PEO under soft sparking mode is a promising technique for improving the wear resistance of titanium alloy.Mingzeng ShaoWei WangHongbo YangXueer ZhangXiaomei HeMDPI AGarticletitanium alloycold sprayplasma electrolytic oxidationsoft sparkingEngineering (General). Civil engineering (General)TA1-2040ENCoatings, Vol 11, Iss 1288, p 1288 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	titanium alloy cold spray plasma electrolytic oxidation soft sparking Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	titanium alloy cold spray plasma electrolytic oxidation soft sparking Engineering (General). Civil engineering (General) TA1-2040 Mingzeng Shao Wei Wang Hongbo Yang Xueer Zhang Xiaomei He Preparation of Wear-Resistant Coating on Ti6Al4V Alloy by Cold Spraying and Plasma Electrolytic Oxidation
description	In order to improve the wear resistance of Ti6Al4V alloy, the alloy was first coated with alumina-reinforced aluminum coating (CS-coating) by cold spraying, and then the alloy with CS-coating was processed by plasma electrolytic oxidation (PEO) under unipolar mode and soft sparking mode, respectively, to prepare wear-resistant PEO coatings. For comparison, Ti6Al4V alloy without CS-coating was also subjected to PEO treatment. The microstructure, phase composition, hardness, and wear resistance of the PEO coatings formed on Ti6Al4V alloy with and without CS-coating were investigated. The results revealed that PEO coatings formed on Ti6Al4V alloy with CS-coating under soft sparking mode contained more α-Al<sub>2</sub>O<sub>3</sub>, possessed larger thickness, more compact microstructure, and higher microhardness than that formed under unipolar mode. The PEO coating formed on Ti6Al4V substrate was mainly composed of TiO<sub>2</sub> and had pores and cracks. Among all these coatings, PEO coating formed on Ti6Al4V alloy with CS-coating under soft sparking mode exhibited the best wear resistance with a wear rate of 1.18 × 10<sup>−5</sup> mm<sup>3</sup>/(Nm), which was only 15.28% of that of the Ti6Al4V substrate. The investigation indicated that the combination of cold spraying and PEO under soft sparking mode is a promising technique for improving the wear resistance of titanium alloy.
format	article
author	Mingzeng Shao Wei Wang Hongbo Yang Xueer Zhang Xiaomei He
author_facet	Mingzeng Shao Wei Wang Hongbo Yang Xueer Zhang Xiaomei He
author_sort	Mingzeng Shao
title	Preparation of Wear-Resistant Coating on Ti6Al4V Alloy by Cold Spraying and Plasma Electrolytic Oxidation
title_short	Preparation of Wear-Resistant Coating on Ti6Al4V Alloy by Cold Spraying and Plasma Electrolytic Oxidation
title_full	Preparation of Wear-Resistant Coating on Ti6Al4V Alloy by Cold Spraying and Plasma Electrolytic Oxidation
title_fullStr	Preparation of Wear-Resistant Coating on Ti6Al4V Alloy by Cold Spraying and Plasma Electrolytic Oxidation
title_full_unstemmed	Preparation of Wear-Resistant Coating on Ti6Al4V Alloy by Cold Spraying and Plasma Electrolytic Oxidation
title_sort	preparation of wear-resistant coating on ti6al4v alloy by cold spraying and plasma electrolytic oxidation
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/63b8f362db594409ba040252a2a6b646
work_keys_str_mv	AT mingzengshao preparationofwearresistantcoatingonti6al4valloybycoldsprayingandplasmaelectrolyticoxidation AT weiwang preparationofwearresistantcoatingonti6al4valloybycoldsprayingandplasmaelectrolyticoxidation AT hongboyang preparationofwearresistantcoatingonti6al4valloybycoldsprayingandplasmaelectrolyticoxidation AT xueerzhang preparationofwearresistantcoatingonti6al4valloybycoldsprayingandplasmaelectrolyticoxidation AT xiaomeihe preparationofwearresistantcoatingonti6al4valloybycoldsprayingandplasmaelectrolyticoxidation
_version_	1718412592290988032

Preparation of Wear-Resistant Coating on Ti6Al4V Alloy by Cold Spraying and Plasma Electrolytic Oxidation

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