School of Engineering and Technology;
China University of Geosciences;
Beijing 100083;
China;
Science and Technology on Advanced Functional Composite Laboratory;
Aerospace Research Institute of Materials&Processing Technology;
Beijing 100076;
China;
(La0.2Ce0.2Nd0.2Sm0.2Eu0.2)2Zr2O7; High-entropy ceramics; Thermal barrier coatings; Slow grain growth rate;