Composition optimization of (Hf, Ta, Zr, Cr)C high‐entropy carbides for good oxidation resistance

International Journal of Applied Ceramic Technology, Journal Year: 2024, Volume and Issue: 22(1)

Published: Aug. 11, 2024

Abstract Oxidation resistance is crucial to the potential applications of high‐entropy carbides (HECs) at elevated temperatures. Here, we realize exploration (Hf, Ta, Zr, Cr)C (HEC‐TM, TM = Hf, and Cr) with good oxidation by optimizing their compositions. To be specific, 21 kinds HEC‐ x ( 0–25 mol%) samples are fabricated a high‐throughput ultrafast high‐temperature sintering technique, followed testing 1673 K for 30 min. Among all HEC samples, as‐fabricated HEC‐0Zr proved possess best an depth only 53 µm. Further study on isothermal kinetics demonstrates that follow linear law. The believed result from (Ta, Me) 2 O 5 phase low melting point, which can promote densification oxide layer. This research opens up new way efficiently discovering HECs extreme applications.

Language: Английский

A4Ta2O9 (A=Ca, Mg) tantalate as novel thermal barrier coatings materials with superior calcium-magnesium-alumino-silicate corrosion resistance

Journal of the European Ceramic Society, Journal Year: 2024, Volume and Issue: unknown, P. 117090 - 117090

Published: Nov. 1, 2024

Language: Английский

Composition engineering of high-entropy rare-earth monosilicates enables remarkable CMAS corrosion resistance

Journal of Materiomics, Journal Year: 2024, Volume and Issue: unknown, P. 100967 - 100967

Published: Nov. 1, 2024

Language: Английский