Flexible dual‐phase rare‐earth zirconate high‐entropy ceramic nanofibrous membranes for superior thermal insulation

• DOI: 10.1111/jace.19666
• Publication Date: 2024-01-12T06:40:06Z
• Authors: Hengchang Wang; Jie Xu; Mingyue Wei; Xiaoying Feng; Jiamin Wu; Ping Zhang; Feng Gao
• Keywords: Thermal Stability; Electrospinning

Abstract Ceramic fibers are potential lightweight materials for high‐temperature insulation due to their excellent stability and low thermal conductivity. However, the grain growth at high temperatures leads loss of flexibility decreases in performances ceramic fibers. Herein, we prepared flexible (La 0.2 Nd Sm Gd Yb ) 2 Zr O 7 (LNSGY) high‐entropy nanofibrous membranes using polyacetylacetone rare‐earth zirconium precursors by electrospinning method. According XRD TEM analyses, LNSGY exhibited dual phases defective fluorite ordered pyrochlore structures. The size increased from 15.4 40.8 nm heat treatments increasing 800 1200°C; slow contributed good flexibility. fiber morphology was continuous well distributed with diameters less than 500 nm. conductivity room temperature 0.0339 W/(m K). In addition, tensile strength temperatures. These provide further applications as materials.