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About this Abstract
Meeting 2026 TMS Annual Meeting & Exhibition
Symposium Advances in Ceramic Materials and Processing
Presentation Title From High-Entropy Ceramics (HECs) to Compositionally Complex Ceramics (CCCs)
Author(s) Jian Luo
On-Site Speaker (Planned) Jian Luo
Abstract Scope This talk will first review a series of our studies of high-entropy ceramics (HECs), including equimolar five-component MB2 [Sci. Rep. 2016], MB [Scripta 2020], M3B4 [JAC 2021], MB4 [JECS 2021] and MB6 [JECS 2021] borides, perovskite [Scripta 2018] and YSZ-like fluorite [JECS 2018] oxides, and MSi2 [J. Materiomics 2019] and M5Si3 [Scripta 2022] silicides, along with intermetallic compounds [Sci. Bull. 2019]. In 2020, we further proposed to extend HECs to "compositionally complex ceramics (CCCs)" [JECS 2020; JMS 2020] to include non-equimolar compositions and long/short-range ordering, which reduce configurational entropies, but offer additional opportunities to tailor/improve properties. We also reported the first dual-phase HECs/CCCs [JECS 2020] and investigated 10- to 21-component ultrahigh-entropy fluorite-based oxides [Acta 2021 & 2022; Scripta 2022; APM 2023; JECS 2024]. Our recent research investigates compositionally complex perovskite oxides for solar thermochemical hydrogen generation [Chem. Mater. 2023] and as solid lithium-ion conductors [Matter 2023; JECS 2025; JAC 2025].
Proceedings Inclusion? Planned:
Keywords Ceramics, High-Entropy Alloys, Characterization

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