Evaluation of NaOH pre-treatment on the corrosion behavior and surface characteristics of hydroxyapatite coated NiTi alloy

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dc.contributor.authorŞimşek, Görkem Muttalip
dc.contributor.authorİpekoğlu, Mehmet
dc.contributor.authorYapıcı, Güney Güven
dc.date.accessioned2021-01-08T21:51:20Z
dc.date.available2021-01-08T21:51:20Z
dc.date.issued2020
dc.departmentTAÜ, Mühendislik Fakültesi, Makine Mühendisliği Bölümüen_US
dc.descriptionWOS:000559294400001en_US
dc.description.abstractSuccessful short-term implementation of nickel-titanium (NiTi) alloys as implants has been a motivation for the development of long-term applications. However, rendering these as safe implant materials is challenging. The major problem associated with the use of NiTi for in-vivo applications is the potential risk of Ni release from the implant surface due to the corrosive environment of the body. Various methods including surface treatment techniques with acid and alkali solutions and application of biocompatible coatings have been used to overcome these difficulties. In particular, NaOH pre-treatment has been commonly performed for surface activation of the substrate material to enhance the adhesion properties of coatings. The present work investigates the effect of NaOH pre-treatment on the hydroxyapatite (HA) coating and the resulting corrosion behavior of and cell response to HA coated NiTi wires. Microstructural examinations showed that the coating integrity deteriorated with prior NaOH treatment which also increased the corrosion rate as evidenced by potentiodynamic measurements. XPS analysis revealed heightened Ni levels on the sample surfaces and cytotoxicity tests showed decreased cell viability for the samples with pre-treatment. Absence of NaOH pre-treatment led to lower contact angle values pointing to higher biocompatibility.
dc.description.sponsorshipOzyegin UniversityOzyegin University
dc.description.sponsorshipThe authors would like to acknowledge Ozyegin University for the financial support throughout this study.
dc.identifier.doi10.1007/s00339-020-03847-1
dc.identifier.issn0947-8396
dc.identifier.issn1432-0630
dc.identifier.issue8en_US
dc.identifier.scopus2-s2.0-85088877508
dc.identifier.scopusqualityQ2
dc.identifier.urihttp://doi.org/10.1007/s00339-020-03847-1
dc.identifier.urihttps://hdl.handle.net/20.500.12846/139
dc.identifier.volume126en_US
dc.identifier.wosWOS:000559294400001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSpringer Heidelberg
dc.relation.ispartofApplied Physics A-Materials Science & Processing
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectNitien_US
dc.subjectCoatingen_US
dc.subjectHydroxyapatiteen_US
dc.subjectCorrosionen_US
dc.subjectCell Viabilityen_US
dc.subjectSurface Wettabilityen_US
dc.titleEvaluation of NaOH pre-treatment on the corrosion behavior and surface characteristics of hydroxyapatite coated NiTi alloy
dc.typeArticle

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