Graphene-bioactive glass composites: Structural, Vickers hardness, and gamma-ray attenuation characteristics

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dc.authoridEne, Antoaneta/0000-0002-6976-0767
dc.authoridTekin, Huseyin Ozan/0000-0002-0997-3488
dc.authoridALMISNED, GHADA/0000-0001-9072-4480
dc.authorwosidEne, Antoaneta/C-1386-2011
dc.authorwosidTekin, Huseyin Ozan/J-9611-2016
dc.authorwosidALMISNED, GHADA/AIF-4569-2022
dc.contributor.authorDeliormanli, Aylin M.
dc.contributor.authorALMisned, Ghada
dc.contributor.authorEne, Antoaneta
dc.contributor.authorTekin, H. O.
dc.date.accessioned2024-05-19T14:41:59Z
dc.date.available2024-05-19T14:41:59Z
dc.date.issued2023
dc.departmentİstinye Üniversitesien_US
dc.description.abstractIntroduction: Graphene-based materials have gained increasing attention for use in radiation attenuation applications. In this study, pristine graphene nanoplatelet-containing (1, 3, 5, and 10 wt%) borate-based bioactive glass composites were prepared. Methods: Structural properties, Vickers microhardness, and gamma-ray radiation shielding properties of the fabricated composites were examined in detail. Results and Discussion: Results revealed that the inclusion of the graphene in the glass matrix led to a decrease in the bulk density of the glass-based composites from 2.41 to 2.31 g/cm(3). Similarly, a decrease in Vickers hardness was obtained as the graphene concentration was increased due to a convoluted effect of the non-uniform distribution of graphene nanoplatelets in the bioactive glass matrix and the higher residual porosity. Vickers hardness of the bare and the 10 wt% graphene-containing bioactive glass discs were measured to be 5.03 +/- 0.28 GPa and 1.87 +/- 0.56 GPa, respectively. On the other hand, the incorporation of graphene starting from 3 wt% decreased the crack propagation after indentation which may be attributed to an increase in fracture toughness. In the study, fundamental gamma ray absorption properties of graphene-containing bioactive glasses were examined in the 0.015-15 MeV incident photon energy range. For this purpose, the Py-MLBUF code was employed to determine gamma ray absorption parameters. Results showed that linear attenuation coefficients of the glass-based composites decreased due to a decrease in the density of the samples. On the other hand, as graphene was incorporated into the bioactive glass structure, exposure buildup factor and energy absorption buildup factor values increased. The growing graphene ratio in the glass structure contributed negatively to the photon's tendency to interact with the material.en_US
dc.description.sponsorshipPrincess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia [PNURSP2023R149]en_US
dc.description.sponsorshipPrincess Nourah bint Abdulrahman University Researchers Supporting Project number (PNURSP2023R149), Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia.en_US
dc.identifier.doi10.3389/fmats.2023.1179502
dc.identifier.issn2296-8016
dc.identifier.scopus2-s2.0-85152516316en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.urihttps://doi.org10.3389/fmats.2023.1179502
dc.identifier.urihttps://hdl.handle.net/20.500.12713/5185
dc.identifier.volume10en_US
dc.identifier.wosWOS:000967619800001en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherFrontiers Media Saen_US
dc.relation.ispartofFrontiers In Materialsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.snmz20240519_kaen_US
dc.subjectGrapheneen_US
dc.subjectBioactive Glassen_US
dc.subjectHardnessen_US
dc.subjectRadiation Shieldingen_US
dc.subjectVicker Hardnessen_US
dc.titleGraphene-bioactive glass composites: Structural, Vickers hardness, and gamma-ray attenuation characteristicsen_US
dc.typeArticleen_US

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