@article{Chen2026, 
author = {Yuhui Chen and Zihao Wen and Yiwen Liu and Lei Zhuang and Hulei Yu and Yanhui Chu},
title = {Remarkable long-term oxidation resistance of high-entropy alumino-silicides up to 2100 ℃},
year = {2026},
journal = {Journal of Materiomics},
volume = {12},
number = {4},
keywords = {Oxidation resistance, Ablation resistance, Ultrahigh-temperature ceramics, High-entropy alumino-silicides, Compositional engineering},
url = {https://www.sciopen.com/article/10.1016/j.jmat.2026.101226},
doi = {10.1016/j.jmat.2026.101226},
abstract = {Thermal protection systems of hypersonic vehicles typically require advanced high-temperature materials capable of withstanding long-term exposure to oxidizing environments at 1800–2500 ℃. However, related studies are scarce. Here, by employing a laser-assisted compositional engineering strategy, we successfully explore innovative high-entropy alumino-silicides (HEASs) that show superior long-term oxidation resistance across 1700–2100 ℃ for 80 min in air, surpassing the performance of previously reported ultrahigh-temperature materials. The oxidation resistance of HEASs is further validated by plasma ablation testing in air, exhibiting a linear ablation rate of as low as 0.035 μm·s−1 at 2100 ℃. Such remarkable oxidation resistance is attributed to the formation of a unique alumino-silicate glassy phase. Further first-principles calculations coupled with experimental observations indicate an ultralow oxygen diffusion rate (4.26 × 10−5 cm2·s−1) and exceptional thermal stability (binding energy of −0.004 eV·Å−2) in the alumino-silicate glassy phase due to multi-component synergistic effects. This work highlights the potential of HEASs for long-term ultrahigh-temperature applications.}
}