Effect of lanthanum content on the thermophysical properties and near-infrared reflection properties of lanthanum-cerium oxides

被引：6

作者：

Zeng, Shenghao ^{[1
]}

Wang, Zhoufu ^{[1
]}

Ma, Yan ^{[1
]}

Wang, Xitang ^{[1
]}

Liu, Hao ^{[1
]}

Dong, Yunjie ^{[1
]}

Li, Yueying ^{[1
]}

Qiao, Entao ^{[1
]}

Qian, Weilun ^{[1
]}

机构：

[1] Wuhan Univ Sci & Technol, State Key Lab Refractories & Met, Wuhan 430081, Peoples R China

来源：

SOLID STATE SCIENCES | 2022年 / 124卷

基金：

中国国家自然科学基金;

关键词：

Lanthanum-cerium oxides; Lattice distortion; Thermal conductivity; Near-infrared reflectivity; High-temperature energy saving; THERMAL-CONDUCTIVITY; PHASE; PERFORMANCE; EMISSIVITY; STABILITY; RADIATION; COATINGS; ZIRCONIA; LA2CE2O7; CEO2;

D O I：

10.1016/j.solidstatesciences.2021.106805

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A series of lanthanum-cerium oxides with different lanthanum content were synthesized by low-temperature solid-state method, and the effect of lanthanum content on the thermal conductivity and near-infrared reflectance of lanthanum-cerium oxide ceramics was systematically investigated. The results indicated that the thermal conductivity of lanthanum-cerium oxide ceramics decreased significantly with the increase of lanthanum content, which was mainly due to the non-negligible phonon scattering caused by the increased point defects in the structure. Lanthanum-cerium oxide ceramics with different lanthanum content had high near-infrared reflectivity (82%) between 1200 and 2200 nm. The lanthanum-cerium oxide ceramics prepared in this work has lower thermal conductivity and higher near-infrared reflectivity, which has broad application prospects in the field of high-temperature energy saving as thermal insulation material.

引用

页数：7

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