摘要
作为一类新型陶瓷材料体系,高熵陶瓷(HECs)具有丰富的组成和结构特征,成为当前的研究热点。高熵陶瓷内部晶格畸变严重,通过增加声子散射,可显著降低材料的热导率;通过固溶强化作用,可提升材料的力学性能。此外,均匀的多金属阳离子活性位点分布、稳定的高构型熵和化学无序性可以改善高熵陶瓷的催化性能和电性能。本文综述了高熵陶瓷的性能、形成机制和应用前景,并对高熵陶瓷未来的研究与发展方向进行了展望。
As a new class of ceramic material system,high-entropy ceramics(HECs)have become a research hotspot due to their compositional and structural diversity.HECs have the characteristic of severe lattice distortion.The thermal conductivity of HECs can be significantly reduced by increasing phonon scattering.The mechanical properties of HECs are enhanced by the solid solution strengthening.In addition,the catalytic and electrical properties of HECs can be improved by uniform distribution of active sites for polymetallic cations,stable high configurational entropy and chemical disorder.In this paper,the properties,formation mechanisms and potential applications of HECs were summarized.The future research and development direction of HECs were also prospected.
作者
刘国承
孙明
华林
周凌云
刘阳
夏宏伟
LIU Guo-cheng;SUN Ming;HUA Lin;ZHOU Ling-yun;LIU Yang;XIA Hong-wei(Hubei Key Laboratory of Advanced Technology for Automotive Components,Wuhan University of Technology,Wuhan 430070,China;Hubei Collaborative Innovation Center for Automotive Components Technology,Wuhan University of Technology,Wuhan 430070,China)
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2023年第6期1902-1913,共12页
The Chinese Journal of Nonferrous Metals
基金
国家重点研发计划资助项目(2018YFB1106700)
教育部创新团队发展计划资助项目(IRT_17R83)
华中科技大学材料成形与模具技术国家重点实验室开放课题研究基金资助项目(P2021-018)。
关键词
陶瓷材料
高熵陶瓷
熵
材料性能
ceramic materials
high-entropy ceramic
entropy
material property
