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Article: One-step synthesis of coral-like high-entropy metal carbide powders

TitleOne-step synthesis of coral-like high-entropy metal carbide powders
Authors
Keywordscarbothermal reduction
first-principle calculations
high-entropy metal carbides
screw dislocation growth
solid solutions
Issue Date2019
Citation
Journal of the American Ceramic Society, 2019, v. 102, n. 10, p. 6372-6378 How to Cite?
AbstractThe synthesis of high-entropy metal carbide powders is critical for implementing their extensive applications. However, the one-step synthesis of high-entropy metal carbide powders is rarely studied. Herein, the synthesis possibility of high-entropy metal carbide powders, namely (Zr0.25Ta0.25Nb0.25Ti0.25)C (ZTNTC), via one-step carbothermal reduction was first investigated theoretically by analyzing chemical thermodynamics and lattice size difference based on the first-principle calculations, and then the ZTNTC powders with particle size of 0.5-2 μm were successfully synthesized experimentally. The as-synthesized powders not only had a single rock-salt crystal structure of metal carbides, but also possessed high-compositional uniformity from nanoscale to microscale. More interestingly, they exhibited the distinguished coral-like morphology with the hexagonal step surface, whose growth was governed by a classical screw dislocation growth mechanism.
Persistent Identifierhttp://hdl.handle.net/10722/318772
ISSN
2023 Impact Factor: 3.5
2023 SCImago Journal Rankings: 0.819
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorYe, Beilin-
dc.contributor.authorNing, Shanshan-
dc.contributor.authorLiu, Da-
dc.contributor.authorWen, Tongqi-
dc.contributor.authorChu, Yanhui-
dc.date.accessioned2022-10-11T12:24:31Z-
dc.date.available2022-10-11T12:24:31Z-
dc.date.issued2019-
dc.identifier.citationJournal of the American Ceramic Society, 2019, v. 102, n. 10, p. 6372-6378-
dc.identifier.issn0002-7820-
dc.identifier.urihttp://hdl.handle.net/10722/318772-
dc.description.abstractThe synthesis of high-entropy metal carbide powders is critical for implementing their extensive applications. However, the one-step synthesis of high-entropy metal carbide powders is rarely studied. Herein, the synthesis possibility of high-entropy metal carbide powders, namely (Zr0.25Ta0.25Nb0.25Ti0.25)C (ZTNTC), via one-step carbothermal reduction was first investigated theoretically by analyzing chemical thermodynamics and lattice size difference based on the first-principle calculations, and then the ZTNTC powders with particle size of 0.5-2 μm were successfully synthesized experimentally. The as-synthesized powders not only had a single rock-salt crystal structure of metal carbides, but also possessed high-compositional uniformity from nanoscale to microscale. More interestingly, they exhibited the distinguished coral-like morphology with the hexagonal step surface, whose growth was governed by a classical screw dislocation growth mechanism.-
dc.languageeng-
dc.relation.ispartofJournal of the American Ceramic Society-
dc.subjectcarbothermal reduction-
dc.subjectfirst-principle calculations-
dc.subjecthigh-entropy metal carbides-
dc.subjectscrew dislocation growth-
dc.subjectsolid solutions-
dc.titleOne-step synthesis of coral-like high-entropy metal carbide powders-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1111/jace.16514-
dc.identifier.scopuseid_2-s2.0-85065450264-
dc.identifier.volume102-
dc.identifier.issue10-
dc.identifier.spage6372-
dc.identifier.epage6378-
dc.identifier.eissn1551-2916-
dc.identifier.isiWOS:000478649200063-

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