The effects of graphene nanoplatelet addition to in situ compacted alumina nanocomposites using ultra-high frequency induction sintering system

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dc.contributor.authorKuşoğlu I.M.
dc.contributor.authorÇavdar U.
dc.contributor.authorAltintaş A.
dc.date.accessioned2024-07-22T08:07:32Z
dc.date.available2024-07-22T08:07:32Z
dc.date.issued2020
dc.description.abstractThe aim of this study was to compact and sinter in situ graphene nanoplatelets (GNPs) with the addition of alumina (Al2O3) nanoparticles to form nanocomposites by using an ultra-high frequency induction sintering system with the assistance of applying a uniaxial load. To obtain the effect of the addition of GNPs to the compaction and to the mechanical properties of the nanocomposite, 1 to 5 wt.% GNPs was mixed to alumina nanoparticles by high-speed ball milling for 2 h at 350 rpm. Mixed Al2O3-GNP compositions were compacted in situ and sintered in a graphite die by induction-assisted heating at 1650 °C for 20 min with a uniaxial load applied in a vacuum chamber. The microstructure of as-sintered nanocomposites was observed using a scanning electron microscope (SEM) before and after thermal etching. Hardness and wear tests were carried out to determine mechanical properties. The results were compared with the properties of a pure alumina nanocompact. It was found that minimum grain size and maximum density, hardness, and wear resistance can be obtained by the addition of 1 wt.% GNPs to alumina nanoparticles. Higher amounts of GNP addition gradually decreased the density, hardness, and wear rates and increased the grain size of the alumina matrix. © 2019, Australian Ceramic Society.
dc.identifier.DOI-ID10.1007/s41779-019-00356-0
dc.identifier.issn25101560
dc.identifier.urihttp://akademikarsiv.cbu.edu.tr:4000/handle/123456789/13982
dc.language.isoEnglish
dc.publisherSpringer
dc.subjectAlumina
dc.subjectAluminum oxide
dc.subjectBall milling
dc.subjectEtching
dc.subjectGrain size and shape
dc.subjectGraphene
dc.subjectGraphene Nanoplatelets
dc.subjectHardness
dc.subjectNanocomposites
dc.subjectNanoparticles
dc.subjectPartial discharges
dc.subjectScanning electron microscopy
dc.subjectSintering
dc.subjectWear of materials
dc.subjectWear resistance
dc.subjectAlumina Nanoparticle
dc.subjectInduction
dc.subjectMaximum density
dc.subjectMinimum grain sizes
dc.subjectSintering system
dc.subjectThermal etching
dc.subjectUltra-high frequency
dc.subjectVacuum chambers
dc.subjectSintered alumina
dc.titleThe effects of graphene nanoplatelet addition to in situ compacted alumina nanocomposites using ultra-high frequency induction sintering system
dc.typeArticle

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