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Comparison of wear properties of HVOF sprayed WC-Co and WC-CoCr coatings on Al alloys

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dc.creator Ozkavak, H. Varol
dc.creator ŞAHİN, Şakir
dc.creator SARAÇ, Mehmet Fahri
dc.creator Alkan, Zehra
dc.date 2019-08-31T21:00:00Z
dc.date.accessioned 2020-10-06T10:47:18Z
dc.date.available 2020-10-06T10:47:18Z
dc.identifier 867ec93a-8e1a-4ee6-8140-bfe09bdc057d
dc.identifier 10.1088/2053-1591/ab2ee1
dc.identifier https://avesis.sdu.edu.tr/publication/details/867ec93a-8e1a-4ee6-8140-bfe09bdc057d/oai
dc.identifier.uri http://acikerisim.sdu.edu.tr/xmlui/handle/123456789/65330
dc.description Coating is applied onto aluminum alloys to improve their surface properties. Cermet coatings applied especially by thermal spraying techniques give high mechanical and corrosion resistance to the surface of alloys. In this study, the WC-Co and WC-CoCr coatings were applied onto three different substrates, Al-2024, Al-6082, and Al-7075 alloys, using High Velocity Oxy-Fuel (HVOF) method. The properties of coatings were investigated according to the coating and substrate type, considering microstructures, tribological properties and sliding wear resistance of the sprayed coatings. It was found that the WC-CoCr coatings exhibited higher hardness while giving a thinner coating than the WC-Co coatings. Besides, the presence of Cr in the coating enhanced the binding of carbide grains. Depending on all these, the WC-CoCr coatings showed better wear resistance for all Al-alloy substrates compared to the WC-Co coatings. Slight decomposition of WC phase was taken place during coating process and this contributed to the wear resistance. The highest wear resistance was obtained in the WC-CoCr coating on Al-7075 alloy.
dc.language eng
dc.rights info:eu-repo/semantics/closedAccess
dc.title Comparison of wear properties of HVOF sprayed WC-Co and WC-CoCr coatings on Al alloys
dc.type info:eu-repo/semantics/article


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