Exceptional Oxidation Resistance of High-Entropy Carbides up to 3600 °C
© 2025 Wiley‐VCH GmbH.
| Veröffentlicht in: | Advanced materials (Deerfield Beach, Fla.). - 1998. - 37(2025), 34 vom: 04. Aug., Seite e2507254 |
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| 1. Verfasser: | |
| Weitere Verfasser: | , , , , , , |
| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2025
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| Zugriff auf das übergeordnete Werk: | Advanced materials (Deerfield Beach, Fla.) |
| Schlagworte: | Journal Article composition engineering high‐entropy carbides oxidation resistance ultrahigh‐temperature materials |
| Zusammenfassung: | © 2025 Wiley‐VCH GmbH. Achieving exceptional oxidation resistance at elevated temperatures is long desirable for ultrahigh-temperature materials to be used in relevant applications such as hypersonic flights, re-entry vehicles, and propulsion systems. However, their practical service temperatures are typically limited to below 3000 °C. Here, the exploration of (Hf, Ta, Zr, W)C high-entropy carbides with exceptional oxidation resistance of 2.7 µm·s-1 up to 3600 °C through a high-entropy compositional engineering strategy is reported. This impressive oxidation behavior arises from the formation of unique dual-structural oxide layers involving numerous high-melting-point W particles uniformly embedded within molten (Hf, Me)6(Ta, Me)2O17 (Me = metal element, Hf, Ta, Zr, and W) primary oxides. The developed (Hf, Ta, Zr, W)C demonstrates a significant breakthrough for ultrahigh-temperature applications up to 3600 °C, paving the way for further design of advanced ultrahigh-temperature materials capable of serving at higher service temperatures |
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| Beschreibung: | Date Revised 28.08.2025 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
| ISSN: | 1521-4095 |
| DOI: | 10.1002/adma.202507254 |