Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/7556
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dc.contributor.authorNoli, Fotini-
dc.contributor.authorPichon, Luc-
dc.contributor.authorÖztürk, Orhan-
dc.date.accessioned2020-01-06T07:01:55Z
dc.date.available2020-01-06T07:01:55Z
dc.date.issued2018-04en_US
dc.identifier.citationNoli, F., Pichon, L., and Öztürk, O. (2018). The influence of plasma-based nitriding and oxidizing treatments on the mechanical and corrosion properties of CoCrMo biomedical alloy. Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, 49(4), 1383-1396. doi:10.1007/s11661-018-4487-5en_US
dc.identifier.issn1073-5623
dc.identifier.issn1073-5623-
dc.identifier.issn15431940-
dc.identifier.urihttps://doi.org/10.1007/s11661-018-4487-5
dc.identifier.urihttps://hdl.handle.net/11147/7556
dc.description.abstractPlasma-based nitriding and/or oxidizing treatments were applied to CoCrMo alloy to improve its surface mechanical properties and corrosion resistance for biomedical applications. Three treatments were performed. A set of CoCrMo samples has been subjected to nitriding at moderate temperatures (~ 400 °C). A second set of CoCrMo samples was oxidized at 395 °C in pure O2. The last set of CoCrMo samples was nitrided and subsequently oxidized under the experimental conditions of previous sets (double treatment). The microstructure and morphology of the layers formed on the CoCrMo alloy were investigated by X-ray diffraction, Atomic Force Microscopy, and Scanning Electron Microscopy. In addition, nitrogen and oxygen profiles were determined by Glow Discharge Optical Emission Spectroscopy, Rutherford Backscattering Spectroscopy, Energy-Dispersive X-ray, and Nuclear Reaction Analysis. Significant improvement of the Vickers hardness of the CoCrMo samples after plasma nitriding was observed due to the supersaturated nitrogen solution and the formation of an expanded FCC γN phase and CrN precipitates. In the case of the oxidized samples, Vickers hardness improvement was minimal. The corrosion behavior of the samples was investigated in simulated body fluid (0.9 pct NaCl solution at 37 °C) using electrochemical techniques (potentiodynamic polarization and cyclic voltammetry). The concentration of metal ions released from the CoCrMo surfaces was determined by Instrumental Neutron Activation Analysis. The experimental results clearly indicate that the CoCrMo surface subjected to the double surface treatment consisting in plasma nitriding and plasma oxidizing exhibited lower deterioration and better resistance to corrosion compared to the nitrided, oxidized, and untreated samples. This enhancement is believed to be due to the formation of a thicker and more stable layer.en_US
dc.description.sponsorshipFrench National Research Agency (ANR) ANR-11-LABX-0017-01; IAEA-CRP 1576; European Commission Joint Research Centre 83883en_US
dc.language.isoenen_US
dc.publisherSpringer Verlagen_US
dc.relation.ispartofMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Scienceen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectCobalt alloysen_US
dc.subjectBiomedical applicationsen_US
dc.subjectMolybdenum alloysen_US
dc.subjectCorrosion resistanceen_US
dc.titleThe influence of plasma-based nitriding and oxidizing treatments on the mechanical and corrosion properties of CoCrMo biomedical alloyen_US
dc.typeArticleen_US
dc.authorid0000-0002-9043-7198en_US
dc.institutionauthorÖztürk, Orhan-
dc.departmentIzmir Institute of Technology. Physicsen_US
dc.identifier.volume49en_US
dc.identifier.issue4en_US
dc.identifier.startpage1383en_US
dc.identifier.endpage1396en_US
dc.identifier.wosWOS:000426686200033en_US
dc.identifier.scopus2-s2.0-85042868914en_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.identifier.doi10.1007/s11661-018-4487-5-
dc.relation.doi10.1007/s11661-018-4487-5en_US
dc.coverage.doi10.1007/s11661-018-4487-5en_US
dc.identifier.scopusqualityQ1-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.cerifentitytypePublications-
item.fulltextWith Fulltext-
item.grantfulltextopen-
item.openairetypeArticle-
item.languageiso639-1en-
crisitem.author.dept04.05. Department of Pyhsics-
Appears in Collections:Physics / Fizik
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection
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