Turning of high entropy alloy into high entropy carbides by modifying carbon content during reactive sintering
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F24%3APU151491" target="_blank" >RIV/00216305:26620/24:PU151491 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0272884224004656?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0272884224004656?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.ceramint.2024.01.438" target="_blank" >10.1016/j.ceramint.2024.01.438</a>
Alternative languages
Result language
angličtina
Original language name
Turning of high entropy alloy into high entropy carbides by modifying carbon content during reactive sintering
Original language description
High entropy alloys containing equimolar multi-element composition enhance physical properties over traditional alloys. The concept was applied also for high entropy ceramics, but the solid-state reaction is necessary. In this work, high entropy alloy VNbMoTaW reacted with carbon to form high entropy carbide. Direct reaction in Spark Plasma Sintering (SPS) conditions leads to high entropy or entropy aided carbides depending on the amount of present carbon. The entropy aided carbide formed at low carbon concentrations below 0.8 of equimolar content contained all metallic elements, but two separated phases were identified: Nb, Ta or W, Mo rich. The microstructure of the entropy aided carbides is lamellar and refined compared to high entropy carbide (V 0.2 Nb 0.2 Mo 0.2 Ta 0.2 W 0.2 )C 0.8 . The presence of entropy aided carbide decreased the Vickers hardness from 23 GPa to 19 GPa, however, the unique microstructure might enhance other physical properties.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20504 - Ceramics
Result continuities
Project
<a href="/en/project/GA23-06856S" target="_blank" >GA23-06856S: Compositionally complex ceramic oxides: Ab initio design and experimental verification</a><br>
Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
CERAMICS INTERNATIONAL
ISSN
0272-8842
e-ISSN
1873-3956
Volume of the periodical
50
Issue of the periodical within the volume
9
Country of publishing house
GB - UNITED KINGDOM
Number of pages
6
Pages from-to
15367-15372
UT code for WoS article
001217861500001
EID of the result in the Scopus database
2-s2.0-85186368155