Thermal properties of (Zr0.2Ce0.2Hf0.2Y0.2RE0.2)O1.8 (RE= La, Nd and Sm) high entropy ceramics for thermal barrier materials

被引：16
|
作者：
Guo, Xuxin [1 ,2 ,4 ]
Yu, Yuan [1 ,2 ,3 ]
Ma, Wenwen [1 ,3 ]
Tang, Huaguo [1 ,2 ,3 ]
Qiao, Zhuhui [1 ,2 ,3 ]
Zhou, Feng [1 ,4 ]
Liu, Weimin [1 ,3 ,4 ]
机构：
[1] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China
[2] Yantai Zhongke Res Inst Adv Mat & Green Chem Engn, Yantai 264006, Peoples R China
[3] Shandong Lab Yantai Adv Mat & Green Manufacture, Yantai 264006, Peoples R China
[4] Northwestern Polytech Univ, Sch Mat Sci & Engn, Xian 710072, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2022年 / 48卷 / 24期
基金：
中国国家自然科学基金;
关键词：
High entropy ceramics; Hardness; Fracture toughness; Thermal conductivity; Thermal expansion coefficient; THERMOPHYSICAL PERFORMANCES; CONDUCTIVITY; ZIRCONIA; COATINGS; DESIGN; OXIDE;
D O I：
10.1016/j.ceramint.2022.08.122
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The high-entropy ceramic materials (Zr0.25Ce0.25Hf0.25Y0.25)O-1.875 (H-0) and (ZrZr0.2Ce0.2Hf0.2Y0.2RE0.2)O-1.8 (H -RE) (RE = La, Nd and Sm) with fluorite structure and homogeneous element distribution were prepared. With fluorite structure, fine grain size and high density, the H-0 and H-RE ceramics displayed low thermal conduc-tivity, suitable thermal expansion coefficient, high hardness and fracture toughness. The effect of La, Nd and Sm on the mechanical, heat conductivity and heat expansion properties of high entropy ceramics were discussed. The single-phase high-entropy ceramic materials in this work are very suitable for application as thermal barrier materials.
引用
收藏
页码：36084 / 36090
页数：7
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