Evaluation of microstructural and mechanical properties of Ag-Diffused bulk MgB2 superconductors

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dc.authorid0000-0001-8168-3242en_US
dc.authorid0000-0002-5177-3703en_US
dc.authorid0000-0002-4214-9159en_US
dc.authorid0000-0002-3944-0367
dc.authorid0000-0002-2752-9671
dc.contributor.authorYılmazlar, Mustafa
dc.contributor.authorTerzioğlu, Cabir
dc.contributor.authorDoğruer, Musa
dc.contributor.authorKaraboğa, Fırat
dc.contributor.authorSoylu, Nevin
dc.contributor.authorZalaoğlu, Yusuf
dc.contributor.authorYıldırım, Gürcan
dc.date.accessioned2021-06-23T19:36:59Z
dc.date.available2021-06-23T19:36:59Z
dc.date.issued2014
dc.departmentBAİBÜ, Fen Edebiyat Fakültesi, Fizik Bölümüen_US
dc.description.abstractElectrical, microstructural, and mechanical properties of undiffused and Ag-diffused bulk MgB2 superconductors are systematically studied using dc resistivity, scanning electron microscopy (SEM), and Vickers microhardness (H (V) ) measurements. The resistivity (at room temperature), critical (onset and offset) temperature, variation of transition temperature, hole-carrier concentration, surface morphology, Vickers microhardness, elastic modulus, and yield strength values of the samples are obtained and compared with each other. One can see that all superconducting parameters given above depend on the Ag diffusion on MgB2 system. The obtained results illustrate that the room temperature resistivity reduces with the increment of diffusion annealing temperature because of the hole filling when the onset () and offset () critical temperatures determined from the resistivity curves are obtained to enhance from 38.4 to 39.7 K and from 36.9 to 38.8 K, respectively. Further, SEM studies carried out for the microstructural characterization demonstrate that the surface morphology and grain connectivity also improve with the increase of the diffusion annealing temperature. In fact, the best surface morphology is observed for the Ag-diffused bulk MgB2 superconductor exposed to 850 A degrees C annealing temperature. Besides, it is obtained that the load-dependent microhardness values reduce nonlinearly as the applied load increases until 2 N, beyond which the curves shift to the saturation region, presenting that all the samples exhibit the indentation size effect (ISE) behavior. Further, the elastic modulus and yield strength values observed decrease with the enhancement of the applied load.en_US
dc.identifier.doi10.1007/s10948-013-2268-3
dc.identifier.endpage82en_US
dc.identifier.issn1557-1939
dc.identifier.issn1557-1947
dc.identifier.issue1en_US
dc.identifier.scopus2-s2.0-84894899799en_US
dc.identifier.scopusqualityQ3en_US
dc.identifier.startpage77en_US
dc.identifier.urihttps://doi.org/10.1007/s10948-013-2268-3
dc.identifier.urihttps://hdl.handle.net/20.500.12491/8086
dc.identifier.volume27en_US
dc.identifier.wosWOS:000329655900013en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorTerzioğlu, Cabir
dc.institutionauthorDoğruer, Musa
dc.institutionauthorKaraboğa, Fırat
dc.institutionauthorDoğruer, Musa
dc.institutionauthorKaraboğa, Fırat
dc.institutionauthorSoylu, Nevin
dc.institutionauthorZalaoğlu, Yusuf
dc.institutionauthorYıldırım, Gürcan
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.relation.ispartofJournal Of Superconductivity And Novel Magnetismen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectAg diffused MgB2en_US
dc.subjectTransition Temperatureen_US
dc.subjectScanning Electron Microscopyen_US
dc.subjectVickers Microhardnessen_US
dc.titleEvaluation of microstructural and mechanical properties of Ag-Diffused bulk MgB2 superconductorsen_US
dc.typeArticleen_US

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