Comparative study on mechanical properties of undoped and Ce-doped Bi-2212 superconductors

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dc.authorid0000-0002-5177-3703en_US
dc.authorid0000-0002-0391-5551en_US
dc.authorid0000-0002-4214-9159en_US
dc.contributor.authorZalaoğlu, Yusuf
dc.contributor.authorBekiroğlu, Erdal
dc.contributor.authorDoğruer, Musa
dc.contributor.authorYıldırım, Gürcan
dc.contributor.authorÖztürk, Özgür
dc.contributor.authorTerzioğlu, Cabir
dc.date.accessioned2021-06-23T19:34:27Z
dc.date.available2021-06-23T19:34:27Z
dc.date.issued2013
dc.departmentBAİBÜ, Fen Edebiyat Fakültesi, Fizik Bölümüen_US
dc.description.abstractThis study discusses the mechanical performances of Bi1.8Sr2.0CexCa1.1Cu2.1Oy ceramics with x = 0, 0.001, 0.003, 0.005, 0.01, 0.03, 0.05 and 0.1 by way of Vickers microhardness (H-v) measurements performed at different applied loads in the range of 0.245-2.940 N. For the potential industrial applications, the important mechanical characteristics such as Vickers microhardness, elastic modulus, yield strength, fracture toughness and brittleness index values of the samples studied are extracted from the microhardness measurements. All the results obtained indicate that the Vickers hardness, Young's (elastic) modulus, yield strength, fracture toughness and brittleness index values suppress with the increment of the Ce concentration in the system as a consequence of the degradation in the connectivity between superconducting grains. The decrement in the H-v values with the applied load is attributed Indentation Size Effect behaviour of the samples studied. Moreover, the experimental results of Vickers microhardness measurements are estimated using the 5 different models such as Kick's law, proportional sample resistance model, modified proportional sample resistance model, elastic/plastic deformation model and Hays-Kendall approach. According to the results obtained from the simulations, Kick's law is not useful model to obtain information about the origin of the indentation size effect feature of the Ce-doped bulk Bi-2212 superconductors. On the other hand, the Hays-Kendall approach is determined as the most suitable model for the description of the mechanical properties of the superconducting samples. In addition, the bulk porosity analysis for the samples reveals that the porosity increases monotonously with the Ce inclusion in the Bi-2212, leading to the degradation of the grain connectivity.en_US
dc.identifier.doi10.1007/s10854-013-1098-1
dc.identifier.endpage2345en_US
dc.identifier.issn0957-4522
dc.identifier.issue7en_US
dc.identifier.scopus2-s2.0-84879411448en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage2339en_US
dc.identifier.urihttps://doi.org/10.1007/s10854-013-1098-1
dc.identifier.urihttps://hdl.handle.net/20.500.12491/7518
dc.identifier.volume24en_US
dc.identifier.wosWOS:000321913000021en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorZalaoğlu, Yusuf
dc.institutionauthorBekiroğlu, Erdal
dc.institutionauthorDoğruer, Musa
dc.institutionauthorYıldırım, Gürcan
dc.institutionauthorTerzioğlu, Cabir
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.relation.ispartofJournal Of Materials Science-Materials In Electronicsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.titleComparative study on mechanical properties of undoped and Ce-doped Bi-2212 superconductorsen_US
dc.typeArticleen_US

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