Synthesis and characterization of sol-gel derived lanthanum zirconate ceramic aerogels toward ultralow thermal conductivity

Liu，Debao; Zhang，Chao; Xue，Yahui

2023

10.1016/j.mseb.2022.116127

Materials Science and Engineering B-Advanced Functional Solid-State Materials   影响因子和分区

0921-5107

1873-4944

LaZrO ceramic aerogels (LZO CAs) were successfully fabricated via sol-gel method followed by heat treatment process. The morphology, microstructure, and phase composition of the as-prepared samples were systematically studied using various technological means. The results indicated that the as-prepared LZO CAs present a typical three-dimentional (3-D) porous network with a single-phase pyrochlore crystal structure. In addition, the as-prepared LZO CAs presented high specific surface area of 594.85 m/g, low thermal conductivity of 0.033 W/(m·K) at room temperature, and remarkable high temperature heat-insulating property. This work offers a novel strategy for the development of other rare-earth zirconates ceramic aerogels which can be used as high temperature insulations.

La2Zr2O7 ceramic aerogels Pyrochlore Sol-gel method Specific surface area Thermal conductivity

SCI ; EI

英语

第一 ; 通讯

Materials Science ; Physics

Materials Science, Multidisciplinary ; Physics, Condensed Matter

WOS:000883012300001

ELSEVIER

20224513091929

Aerogels ; Crystal structure ; Morphology ; Phase composition ; Rare earths ; Sol-gel process ; Sol-gels ; Specific surface area ; Thermal conductivity ; Zirconium compounds

Thermodynamics:641.1 ; Colloid Chemistry:801.3 ; Chemical Products Generally:804 ; Inorganic Compounds:804.2 ; Glass:812.3 ; Physical Properties of Gases, Liquids and Solids:931.2 ; Crystal Lattice:933.1.1 ; Materials Science:951

2-s2.0-85141378488

Scopus

Department of Mechanics and Aerospace Engineering,Southern University of Science and Technology (SUSTech),Shenzhen,Guangdong,518055,China

Liu，Debao,Zhang，Chao,Xue，Yahui. Synthesis and characterization of sol-gel derived lanthanum zirconate ceramic aerogels toward ultralow thermal conductivity[J]. Materials Science and Engineering B-Advanced Functional Solid-State Materials,2023,287.

Liu，Debao,Zhang，Chao,&Xue，Yahui.(2023).Synthesis and characterization of sol-gel derived lanthanum zirconate ceramic aerogels toward ultralow thermal conductivity.Materials Science and Engineering B-Advanced Functional Solid-State Materials,287.

Liu，Debao,et al."Synthesis and characterization of sol-gel derived lanthanum zirconate ceramic aerogels toward ultralow thermal conductivity".Materials Science and Engineering B-Advanced Functional Solid-State Materials 287(2023).