A novel strategy for preparing high-entropy ceramics through full glass crystallization

A novel strategy for preparing high-entropy ceramics through full glass crystallization | Authorea try { document.documentElement.classList.add('js'); } catch (e) { } var _gaq = _gaq || []; _gaq.push(['_setAccount', 'G-8VDV14Y67G']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); Skip to main content Preprints Collections Wiley Open Research IET Open Research Ecological Society of Japan All Collections About About Authorea FAQs Contact Us Quick Search anywhere Search for preprint articles, keywords, etc. Search Search ADVANCED SEARCH SCROLL Energy & Environmental Materials This is a preprint and has not been peer reviewed. Data may be preliminary. 4 April 2025 V1 Latest version Share on A novel strategy for preparing high-entropy ceramics through full glass crystallization Authors : Zhibiao Ma , Yuxuan Gao , Chenglong Ma , Licheng Zhang , Yuan Zhang , Wenlong Xu , Guoguo Zhang , and Jianqiang Li 0000-0002-9591-458X [email protected] Authors Info & Affiliations https://doi.org/10.22541/au.174372682.27238599/v1 Published ENERGY & ENVIRONMENTAL MATERIALS Version of record Peer review timeline 332 views 162 downloads Contents Abstract Supplementary Material Information & Authors Metrics & Citations View Options References Figures Tables Media Share Abstract High-entropy ceramics have exhibited promising application prospects in aerospace, electronic devices, and extreme environment protection. Current powder sintering route for preparing high-entropy ceramics is hindered by stringent powder requirements, reliance on long-term high-temperature and high-pressure synthesis, as well as compositional inhomogeneity and coarse grains. In this work, the low-temperature glass crystallization method was innovatively introduced into the preparation of high-entropy ceramics. Using garnet-structured rare-earth aluminates (RE3Al5O12, RE is rare-earth elements) as a model system, a series of single-phase RE3Al5O12 ceramics with entropy gradients were successfully synthesized through the glass crystallization method at a low temperature (1000 ℃). Notably, the as-prepared (Eu0.2Gd0.2Y0.2Yb0.2Lu0.2)3Al5O12 (HEC) samples exhibited a low thermal conductivity of 3.58 W m-1 K-1 (at 300 K) and a high thermal expansion coefficient (TEC) of 10.85×10-6 K-1, representing a 21% reduction in thermal conductivity and a 32% increase in TEC compared to reported Yb3Al5O12 ceramics. The HEC samples also exhibited superior mechanical properties compared to most existing high-entropy ceramics, with a hardness of 22.08 GPa and a Young’s modulus of 311.6 GPa. The exceptional comprehensive properties of the HEC samples make them a promising candidate material for thermal barrier coatings (TBCs) and high-temperature structural applications. This investigation confirms that high-entropy ceramics with outstanding properties can be successfully prepared using a glass crystallization method, providing a novel strategy for the low-temperature and pressureless controllable synthesis of single-phase high-entropy ceramics. Supplementary Material File (figures.docx) Download 14.62 MB File (manuscript.docx) Download 14.65 MB Information & Authors Information Version history V1 Version 1 04 April 2025 Peer review timeline Published ENERGY & ENVIRONMENTAL MATERIALS Version of Record 25 Jun 2025 Published Copyright This work is licensed under a Non Exclusive No Reuse License. Collection Energy & Environmental Materials Keywords high-entropy ceramics low-temperature glass crystallization low-thermal conductivity materials thermal expansion coefficient Authors Affiliations Zhibiao Ma University of Science and Technology Beijing View all articles by this author Yuxuan Gao University of Science and Technology Beijing View all articles by this author Chenglong Ma University of Science and Technology Beijing View all articles by this author Licheng Zhang University of Science and Technology Beijing View all articles by this author Yuan Zhang University of Science and Technology Beijing View all articles by this author Wenlong Xu University of Science and Technology Beijing View all articles by this author Guoguo Zhang University of Science and Technology Beijing View all articles by this author Jianqiang Li 0000-0002-9591-458X [email protected] University of Science and Technology Beijing View all articles by this author Metrics & Citations Metrics Article Usage 332 views 162 downloads .FvxKWukQNSOunydq8rnd { width: 100px; } Citations Download citation Zhibiao Ma, Yuxuan Gao, Chenglong Ma, et al. A novel strategy for preparing high-entropy ceramics through full glass crystallization. Authorea . 04 April 2025. DOI: https://doi.org/10.22541/au.174372682.27238599/v1 If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download. For more information or tips please see 'Downloading to a citation manager' in the Help menu . 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