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American Society for Testing and Materials

High-entropy ceramics (HECs) are solid solutions of inorganic compounds with one or more Wyckoff sites shared by equal or near-equal atomic ratios of multi-principal elements. Although in the infant stage, the emerging of this new family of materials has brought new opportunities for material design and property tailoring. Distinct from metals, the diversity in crystal structure and electronic structure of ceramics provides huge space for properties tuning through band structure engineering and phonon engineering. Aside from strengthening, hardening, and low thermal conductivity that have already been found in high-entropy alloys, new properties like colossal dielectric constant, super ionic conductivity, severe anisotropic thermal expansion coefficient, strong electromagnetic wave absorption, etc., have been discovered in HECs. As a response to the rapid development in this nascent field, this article gives a comprehensive review on the structure features, theoretical methods for stability and property prediction, processing routes, novel properties, and prospective applications of HECs. The challenges on processing, characterization, and property predictions are also emphasized. Finally, future directions for new material exploration, novel processing, fundamental understanding, in-depth characterization, and database assessments are given.

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High-entropy ceramics: Present status, challenges, and a look forward

Radiation damage in nanostructured materials

https://iopscience.iop.org/article/10.1088/1741-4326/57/9/092005/pdf

Development of next generation tempered and ODS reduced activation ferritic/martensitic steels for fusion energy applications

Irradiation damage in (Zr0.25Ta0.25Nb0.25Ti0.25)C high-entropy carbide ceramics

https://scholarworks.boisestate.edu/cgi/viewcontent.cgi?article=1174&context=mse_facpubs

Identification of silver and palladium in irradiated TRISO coated particles of the AGR-1 experiment

https://scholarworks.boisestate.edu/cgi/viewcontent.cgi?article=1229&context=mse_facpubs

Yaqiao Wu

Papers

Irradiation damage in (Zr0.25Ta0.25Nb0.25Ti0.25)C high-entropy carbide ceramics

Identification of silver and palladium in irradiated TRISO coated particles of the AGR-1 experiment

Atom Probe Study of Irradiation-Enhanced α′ Precipitation in Neutron-Irradiated Fe–Cr Model Alloys

Stability of Nanoclusters in 14YWT Oxide Dispersion Strengthened Steel Under Heavy Ion-Irradiation by Atom Probe Tomography

Mechanical Alloying of Lanthana-Bearing Nanostructured Ferritic Steels