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Evaluation of mechanical properties and in vitro biocompatibility of TiZrTaNbHf refractory high-entropy alloy film as an alternative coating for TiO2 layer on NiTi alloy

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dc.contributor.coauthorN/A
dc.contributor.departmentN/A
dc.contributor.kuauthorMotallebzadeh, Amir
dc.contributor.kuprofileResearcher
dc.contributor.researchcenterKUYTAM (Koç University Surface Science and Technology Center)
dc.contributor.schoolcollegeinstituteN/A
dc.contributor.yokidN/A
dc.date.accessioned2024-11-09T23:26:43Z
dc.date.issued2022
dc.description.abstractTiZrTaNbHf refractory high-entropy alloy (RHEA) film with a thickness of 750 and 1500 nm was deposited on NiTi alloy by RF magnetron sputtering technique and compared with the thermally grown TiO2 film in terms of mechanical properties and in vitro biocompatibility. RHEA film with the amorphous and homogenous micro-structure, outstanding mechanical properties, and enhanced adhesion strength displayed potential to be used as a protective film preventing Ni ion release from the NiTi implants, particularly in long-term applications. Furthermore, RHEA film exhibited an accelerated and promoted hydroxyapatite (HAp) forming ability sug-gesting excellent bioactivity as well as good bone-bonding ability than thermally grown TiO2 film. The presence of various oxides and sub-oxides played an indispensable role in the rapid nucleation and development of HAp upon RHEA coated specimens' surfaces. The obtained results revealed that RHEA film appears to be the viable alternative coating for TiO2 films on the NiTi biomaterials.
dc.description.indexedbyWoS
dc.description.indexedbyScopus
dc.description.openaccessNO
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TBITAK)
dc.description.sponsorship[117M826] The author gratefully acknowledges the financial support from The Scientific and Technological Research Council of Turkey (TBITAK) under the Grant Number of 117M826.
dc.description.volume448
dc.identifier.doi10.1016/j.surfcoat.2022.128918
dc.identifier.eissn1879-3347
dc.identifier.issn0257-8972
dc.identifier.scopus2-s2.0-85138471561
dc.identifier.urihttp://dx.doi.org/10.1016/j.surfcoat.2022.128918
dc.identifier.urihttps://hdl.handle.net/20.500.14288/11576
dc.identifier.wos864693300002
dc.keywordsRefractory high -entropy alloys
dc.keywordsThin film
dc.keywordsMagnetron sputtering
dc.keywordsMechanical properties
dc.keywordsIn vitro biocompatibility
dc.keywordsShape-memory alloy
dc.keywordsSurface oxidation
dc.keywordsMulticomponent coatings
dc.keywordsCorrosion-resistance
dc.keywordsWear-resistance
dc.keywordsNitride films
dc.keywordsTitanium
dc.keywordsBehavior
dc.keywordsDc
dc.keywordsDeformation
dc.languageEnglish
dc.publisherElsevier Science Sa
dc.sourceSurface & Coatings Technology
dc.subjectMaterials science
dc.subjectCoatings
dc.subjectFilms
dc.subjectPhysics
dc.subjectApplied physics
dc.titleEvaluation of mechanical properties and in vitro biocompatibility of TiZrTaNbHf refractory high-entropy alloy film as an alternative coating for TiO2 layer on NiTi alloy
dc.typeJournal Article
dspace.entity.typePublication
local.contributor.authorid0000-0001-6753-9316
local.contributor.kuauthorMotallebzadeh, Amir

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