Solvothermal-derived multicomponent rare-earth cerate ceramics toward remarkable thermophysical properties

Liu，Debao; Xue，Yahui

2023-03-01

10.1016/j.ceramint.2022.10.307

CERAMICS INTERNATIONAL   影响因子和分区

0272-8842

1873-3956

The multicomponent rare-earth cerate (YLaNdSmEu)CeO (5RECeO) ceramics were successfully fabricated through solvothermal method and the following calcination process. The microstructure and phase composition of the as-obtained products were systematically characterized via SEM, TEM and XRD techniques. The results showed that the as-synthesised 5RECeO has a single-phase fluorite-type crystal structure with the particle size of approximately 200 nm. Furthermore, the as-synthesised 5RECeO demonstrated lower thermal conductivity (1.9–1.26 W m·K at 25–1000 °C), higher thermal expansion coefficients (CTEs, 12.48 × 10 K at 1000 °C), and outstanding mechanical properties including large Young's modulus (248.0 ± 0.35 GPa) and high fracture toughness (2.4 ± 0.21 MPam). The excellent properties of the as-synthesised 5RECeO demonstrates its potential application as a new type of next-generation TBCs.

Fluorite-type Multicomponent Solvothermal method Thermal conductivity Young's modulus

SCI ; EI

英语

第一 ; 通讯

Materials Science

Materials Science, Ceramics

WOS:000932779500001

ELSEVIER SCI LTD

20224413052570

Cerium compounds ; Crystal structure ; Fluorspar ; Fracture toughness ; Particle size ; Phase composition ; Rare earths ; Thermal conductivity ; Thermal expansion

Minerals:482.2 ; Thermodynamics:641.1 ; Inorganic Compounds:804.2 ; Crystal Lattice:933.1.1 ; Materials Science:951

MATERIALS SCIENCE

2-s2.0-85140972845

Scopus

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

Liu，Debao,Xue，Yahui. Solvothermal-derived multicomponent rare-earth cerate ceramics toward remarkable thermophysical properties[J]. CERAMICS INTERNATIONAL,2023,49(5):7965-7969.

Liu，Debao,&Xue，Yahui.(2023).Solvothermal-derived multicomponent rare-earth cerate ceramics toward remarkable thermophysical properties.CERAMICS INTERNATIONAL,49(5),7965-7969.

Liu，Debao,et al."Solvothermal-derived multicomponent rare-earth cerate ceramics toward remarkable thermophysical properties".CERAMICS INTERNATIONAL 49.5(2023):7965-7969.