Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/15241
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dc.contributor.authorFeltrin, Ana C.-
dc.contributor.authorDe Bona, Emanuele-
dc.contributor.authorKaracasulu, Levent-
dc.contributor.authorBiesuz, Mattia-
dc.contributor.authorSglavo, Vincenzo M.-
dc.contributor.authorAkhtar, Farid-
dc.date.accessioned2024-12-25T20:59:43Z-
dc.date.available2024-12-25T20:59:43Z-
dc.date.issued2025-
dc.identifier.issn0955-2219-
dc.identifier.issn1873-619X-
dc.identifier.urihttps://doi.org/10.1016/j.jeurceramsoc.2024.117132-
dc.descriptionDe Bona, Emanuele/0000-0001-5133-5108en_US
dc.description.abstractEntropy-stabilized Ultra High-Temperature Ceramics (UHTC) offer a groundbreaking solution to the challenges of extreme environments, showcasing enhanced mechanical properties, thermal stability, and resistance to oxidation at high temperatures. The consolidation of UHTC by ultra-fast high-temperature sintering (UHS) significantly reduces processing times and temperature and can produce dense high-performance ceramics with superior mechanical properties. This study reports the pressureless synthesis and consolidation of the entropy-stabilized (Hf0.25Zr0.25Ti0.25V0.25)B-2-B4C composite through UHS within 1 minute, starting from transition metal diboride powders. B4C acts as an effective sintering aid, promoting the densification of the system and the formation of a nearly single-phase hexagonal diboride with a diboride-eutectic phase. Furthermore, a secondary minor hexagonal phase rich in V and Zr is formed close to the eutectic regions. Sintering currents of 40 A were necessary to reach densities higher than 90 % under pressureless conditions, achieving nano hardness higher than 27.3 GPa, comparable with high-entropy diborides produced by Spark Plasma Sintering. The study highlights the entropy-stabilized phase formation, diffusion, densification, and grain growth mechanisms involved during UHS. The work contributes to the understanding of entropy-stabilized ceramics produced by UHS as a faster and less energy-consuming process than conventional sintering methods.en_US
dc.description.sponsorshipSwedish Foundation for Strategic Research (SSF) for Infrastructure Fellowship [RIF14-0083]en_US
dc.description.sponsorshipThis work was supported by the Swedish Foundation for Strategic Research (SSF) for Infrastructure Fellowship, Grant No. RIF14-0083. The authors acknowledge Erik Nilsson for the help with the EBSD and the LUMIA (Lulea Material Imaging and Analysis) center for providing the imaging characterization equipment.en_US
dc.language.isoenen_US
dc.publisherElsevier Sci Ltden_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectEntropy-Stabilizationen_US
dc.subjectUltra-High-Temperature Ceramicsen_US
dc.subjectUltra-Fast High-Temperature Sinteringen_US
dc.titlePressureless Synthesis and Consolidation of the Entropy-Stabilized (hf<sub>0.25</Sub>zr<sub>0.25< Composite by Ultra-Fast High-Temperature Sintering (uhs)en_US
dc.typeArticleen_US
dc.authoridDe Bona, Emanuele/0000-0001-5133-5108-
dc.departmentİzmir Institute of Technologyen_US
dc.identifier.volume45en_US
dc.identifier.issue5en_US
dc.identifier.wosWOS:001388720100001-
dc.identifier.scopus2-s2.0-85211967959-
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.identifier.doi10.1016/j.jeurceramsoc.2024.117132-
dc.authorwosidAkhtar, Farid/E-3061-2014-
dc.authorwosidDe Bona, Emanuele/KCL-4731-2024-
dc.authorwosidBiesuz, Mattia/ABG-9979-2020-
dc.identifier.wosqualityQ1-
dc.identifier.scopusqualityQ1-
dc.description.woscitationindexScience Citation Index Expanded-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.languageiso639-1en-
item.openairetypeArticle-
item.grantfulltextnone-
item.fulltextNo Fulltext-
item.cerifentitytypePublications-
crisitem.author.dept01.01. Units Affiliated to the Rectorate-
Appears in Collections:Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection
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