Enhanced ablation/oxidation resistance of high‐entropy carbides: The role of SiC whiskers
Abstract This study investigates the effect of SiC whiskers (SiC w ) on the ablation/oxidation resistance of high‐entropy carbides (TiZrHfNbTa)C. High‐entropy carbide‐SiC w composites were prepared by powder metallurgy and spark plasma sintering. The ablation resistance was evaluated in an oxyacetylene flame at 2100°C/60 s. It was found that increasing SiC w content significantly improved the ablation resistance, and the dynamic oxidation rate decreased by up to 84% for the sample with 10 wt.% SiC w . This improvement is linked to the formation of a protective interfacial layer, which effectively impedes the ingress of oxygen. Microstructural analysis confirmed a denser oxide layer with reduced porosity with higher SiC w content. These results underline the strategic importance of SiC w for the development of materials resistant to extreme conditions.
Authors
- Alexandra Kovalčíková (ORCID: https://orcid.org/0000-0001-7035-8057)
- Michal Hičák (ORCID: https://orcid.org/0000-0001-8446-1100)
- Monika Hrubovčáková (ORCID: https://orcid.org/0000-0002-0437-9279)
- Peter Tatarko (ORCID: https://orcid.org/0000-0001-5013-7003)
- Richard Sedlák (ORCID: https://orcid.org/0000-0002-6461-4787)
- Petra Hviščová (ORCID: https://orcid.org/0000-0001-8355-9165)
- Lenka Ďaková (ORCID: https://orcid.org/0000-0001-9526-1980)
Institutions
- Institute of Chemistry of the Slovak Academy of Sciences (SK)
- Slovak Academy of Sciences (SK)
- Institute of Inorganic Chemistry of the Slovak Academy of Sciences (SK)
Publication Details
- Journal
- International Journal of Applied Ceramic Technology
- Published
- 2025-09-04
- DOI
- https://doi.org/10.1111/ijac.70059
- Primary Topic
- Advanced materials and composites
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Agentúra na Podporu Výskumu a Vývoja