成分复杂陶瓷
Compositionally Complex Ceramics
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中文总结 AI 辅助
该研究提出将高熵陶瓷的探索扩展至成分复杂陶瓷（CCCs），指出其可通过非等摩尔设计、有序结构等调控性能，是定制材料性能的多功能平台。
中文摘要 AI 辅助
过去十年中高熵陶瓷（HECs）的发展将高熵概念扩展到了氧化物、硼化物、硅化物、碳化物、氮化物、氟化物、硅酸盐及其他陶瓷固溶体等多种材料类别，涵盖了日益多样的晶体结构与键合特性，展现出广泛且极具前景的力学、热学及功能特性。早期研究主要聚焦于五组分等摩尔组成，通常假设会形成随机固溶体。近年来，作为HECs的一个子类，10至21组分的超高熵陶瓷被开发出来，其中部分展现出引人关注的突变相变。2020年，我们提出将HECs的探索扩展至更广泛的“成分复杂陶瓷（CCCs）”类别，该类别中，非等摩尔组成、长程与短程有序降低了构型熵，同时为定制和提升材料性能提供了更多机会，使其性能优于更高熵的同类材料。双相CCCs也已有报道，热力学平衡决定了阳离子在两相之间的分配，通过微结构工程进一步为控制和提升性能提供了可能。后续研究发现CCCs中存在晶界类相变，可调控微结构演化与材料性能。总体而言，CCCs通过多样的晶体结构与键合特性、成分复杂性、非等摩尔设计、长程与短程有序、缺陷以及微结构与界面工程，为定制材料性能提供了一个多功能平台。
英文摘要
The development of high-entropy ceramics (HECs) over the past decade has extended the high-entropy concept to a diverse range of oxides, borides, silicides, carbides, nitrides, fluorides, silicates, and other ceramic solid solutions, encompassing increasingly diverse crystal structures and bonding characteristics and exhibiting a broad spectrum of promising mechanical, thermal, and functional properties. Initial studies predominantly focused on five-component equimolar compositions, often assuming the formation of random solid solutions. More recently, 10-21 component ultrahigh-entropy ceramics have been developed as a subset of HECs, some of which exhibit intriguing abrupt phase transitions. In 2020, we proposed extending the exploration of HECs to the broader class of "compositionally complex ceramics" (CCCs), in which non-equimolar compositions and long- and short-range order reduce configurational entropy while providing additional opportunities to tailor and enhance materials properties, thereby outperforming their higher-entropy counterparts. Dual-phase CCCs have also been reported, with thermodynamic equilibria governing cation partitioning between the two phases and offering further opportunities to control and enhance properties through microstructural engineering. Subsequent studies have revealed grain-boundary phase-like transitions in CCCs that can control microstructural evolution and materials properties. Overall, CCCs offer a versatile platform for tailoring materials properties through diverse crystal structures and bonding characteristics, compositional complexity, non-equimolar designs, long- and short-range order, defects, and microstructural and interfacial engineering.
