Enhanced ablation/oxidation resistance of high-entropy carbides: The role of SiC whiskers

IF 2.3 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS

International Journal of Applied Ceramic Technology Pub Date : 2025-09-04 DOI:10.1111/ijac.70059

Lenka Ďaková, Monika Hrubovčáková, Peter Tatarko, Michal Hičák, Richard Sedlák, Petra Hviščová, Alexandra Kovalčíková

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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.

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增强高熵碳化物的抗烧蚀/抗氧化性能：SiC晶须的作用

本文研究了SiC晶须（SiCw）对高熵碳化物（TiZrHfNbTa）C的抗烧蚀/抗氧化性能的影响。采用粉末冶金和火花等离子烧结法制备了高熵碳化物- sicw复合材料。在2100℃/60 s的氧乙炔火焰中测定了其抗烧蚀性能。结果表明，SiCw含量的增加显著提高了材料的抗烧蚀性能，当SiCw含量为10 wt.%时，动态氧化率降低了84%。这种改善与保护界面层的形成有关，保护界面层有效地阻止了氧气的进入。显微组织分析证实，氧化层致密，孔隙率低，SiCw含量高。这些结果强调了SiCw对开发耐极端条件材料的战略重要性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Applied Ceramic Technology 工程技术-材料科学：硅酸盐

CiteScore

3.90

自引率

9.50%

发文量

280

审稿时长

4.5 months

期刊介绍： The International Journal of Applied Ceramic Technology publishes cutting edge applied research and development work focused on commercialization of engineered ceramics, products and processes. The publication also explores the barriers to commercialization, design and testing, environmental health issues, international standardization activities, databases, and cost models. Designed to get high quality information to end-users quickly, the peer process is led by an editorial board of experts from industry, government, and universities. Each issue focuses on a high-interest, high-impact topic plus includes a range of papers detailing applications of ceramics. Papers on all aspects of applied ceramics are welcome including those in the following areas: Nanotechnology applications; Ceramic Armor; Ceramic and Technology for Energy Applications (e.g., Fuel Cells, Batteries, Solar, Thermoelectric, and HT Superconductors); Ceramic Matrix Composites; Functional Materials; Thermal and Environmental Barrier Coatings; Bioceramic Applications; Green Manufacturing; Ceramic Processing; Glass Technology; Fiber optics; Ceramics in Environmental Applications; Ceramics in Electronic, Photonic and Magnetic Applications;