Thermal Oxidation of Cold Sprayed Titanium-Based Coating Deposited on Co-Cr Alloy

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dc.authoridATAR, ERDEM/0000-0002-8157-5556
dc.authoridguleryuz, hasan/0000-0001-6828-6568
dc.authoridBAYDOGAN, MURAT/0000-0002-3683-8476
dc.authoridPaksoy, Ahmet Hilmi/0000-0002-2427-1599
dc.authoridCimenoglu, Huseyin/0000-0002-9921-7108
dc.contributor.authorCetiner, Dogukan
dc.contributor.authorPaksoy, A. Hilmi
dc.contributor.authorTazegul, Onur
dc.contributor.authorBaydogan, Murat
dc.contributor.authorGuleryuz, Hasan
dc.contributor.authorCimenoglu, Huseyin
dc.contributor.authorAtar, Erdem
dc.date.accessioned2025-03-23T19:43:56Z
dc.date.available2025-03-23T19:43:56Z
dc.date.issued2018
dc.departmentSinop Üniversitesi
dc.description.abstractThis study focuses on the surface modification of a medical grade Co-Cr alloy via combining cold spray and thermal oxidation processes. After deposition of a Ti96-Al4 (wt.%) coating, samples were oxidized at 600 degrees C for 60h in air. Oxidation transformed the coating into a dual-layered structure comprising an outer oxide layer (mainly rutile) with a diffusion layer (mainly oxygen enriched titanium and Ti-Al intermetallics) beneath it. Formation of new phases made the diffusion layer brittle and prone to fracture during pull out tests. Scratch and Rockwell-C tests confirmed good adhesion between the oxide and underlying diffusion layers, having average hardness as 1297 HV and 387 HV, respectively. The dual-layer coating exhibited excellent wear performance in a 0.9wt.% NaCl solution against sliding action of alumina ball as compared to Co-Cr substrate, especially at contact pressures<1200MPa, while the maximum in vivo contact pressure is<15MPa for load-bearing orthopedic implants. Furthermore, the release of the aluminum from the dual-layer coating into 0.9wt.% NaCl solution is lower than the permissible limit stated by the International Agency for Research on Cancer.
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK) [214M246]
dc.description.sponsorshipThis work has been carried out with the financial support provided by The Scientific and Technological Research Council of Turkey (TUBITAK) under Contract No. 214M246. The authors would like to thank Mr. A. Nazim of Gebze Technical University for carrying out SEM investigations and Mr. O. F. Deniz of Gebze Technical University for 3D surface profilometer examinations. The authors would also like to thank Mr. F. Muhaffel for conducting depth sensing ultra-micro-hardness measurements.
dc.identifier.doi10.1007/s11666-018-0772-5
dc.identifier.endpage1427
dc.identifier.issn1059-9630
dc.identifier.issn1544-1016
dc.identifier.issue8
dc.identifier.scopus2-s2.0-85055580026
dc.identifier.scopusqualityQ2
dc.identifier.startpage1414
dc.identifier.urihttps://doi.org/10.1007/s11666-018-0772-5
dc.identifier.urihttps://hdl.handle.net/11486/6822
dc.identifier.volume27
dc.identifier.wosWOS:000452893200016
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSpringer
dc.relation.ispartofJournal of Thermal Spray Technology
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20250323
dc.subjectcoating
dc.subjectCo-Cr alloy
dc.subjectcold spray
dc.subjectthermal oxidation
dc.subjecttitanium
dc.subjectwear
dc.titleThermal Oxidation of Cold Sprayed Titanium-Based Coating Deposited on Co-Cr Alloy
dc.typeArticle

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