Titanium-based composite scaffolds reinforced with hydroxyapatite-zirconia: Production, mechanical and in-vitro characterization

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dc.contributor.authorTopuz, Mehmet
dc.contributor.authorDikici, Burak
dc.contributor.authorGavgali, Mehmet
dc.date.accessioned2024-02-23T14:12:52Z
dc.date.available2024-02-23T14:12:52Z
dc.date.issued2021
dc.departmentNEÜen_US
dc.description.abstractIn this study, titanium (Ti)-based composite scaffolds reinforced with hydroxyapatite-zirconia (HA-ZrO2) were successfully produced with powder metallurgy and atmosphere-controlled sintering processes. The scaffolds structures were theoretically selected as 40% and 60% porosity, and fabricated with approximately 1.47 and 4.02 std dev values, respectively. The porosity of the scaffolds was verified by Archimedes? measurements. The scaffolds were characterized by DTA, SEM/EDS, XRD analyses. The mechanical behaviors of the scaffolds were evaluated by compression and hardness tests. Besides, the electrochemical corrosion behaviors of the structures were compared with potentiodynamic scanning (PDS) measurements in simulated body fluids (SBF) at 37 ? 1 ?C. It has been observed that all scaffolds have a bimodal porous structure as they contain varying proportions of micropores as well as macropores in desired dimensions. Biocompatible phases such as TixPy, Ca3(PO4)2 and CaTiO3, respectively, were found in the microstructure after sintering. In compression tests, 40% porous Ti had the highest strength with 37.98 MPa, interestingly, the lowest strength was seen in Ti/HA-ZrO2 scaffold with 60% porosity with 3.80 MPa. Young?s modulus values of all scaffolds vary between 1.67 - 7.20 GPa, due to the bimodal pore structure and composition effect. However, in-vitro corrosion resistance of scaffolds decreased with HA reinforcement, while increased with ZrO2 additive to HA.en_US
dc.description.sponsorshipResearch Found of the Ataturk University [FDK-2019-7281]en_US
dc.description.sponsorshipThis work was supported by Research Found of the Ataturk University under project number FDK-2019-7281.en_US
dc.identifier.doi10.1016/j.jmbbm.2021.104480
dc.identifier.issn1751-6161
dc.identifier.issn1878-0180
dc.identifier.pmid33770587en_US
dc.identifier.scopus2-s2.0-85103316934en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.urihttps://doi.org/10.1016/j.jmbbm.2021.104480
dc.identifier.urihttps://hdl.handle.net/20.500.12452/12219
dc.identifier.volume118en_US
dc.identifier.wosWOS:000647764300001en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.relation.ispartofJournal Of The Mechanical Behavior Of Biomedical Materialsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectPorous Titaniumen_US
dc.subjectHydroxyapatiteen_US
dc.subjectZirconiaen_US
dc.subjectInter-Connected Poresen_US
dc.subjectPowder Metallurgyen_US
dc.titleTitanium-based composite scaffolds reinforced with hydroxyapatite-zirconia: Production, mechanical and in-vitro characterizationen_US
dc.typeArticleen_US

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