The effect of Mg2+doping on the infrared emissivity of LaCrO3 perovskites

被引：11

作者：

Meng, Mingyu ^{[1
,2
,3
]}

Liu, Ling ^{[1
,2
,3
]}

Liu, Yanbo ^{[1
,2
,3
]}

Ma, Zhuang ^{[1
,2
,3
]}

机构：

[1] Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China

[2] Natl Key Lab Sci & Technol Mat Shock & Impact, Beijing 100081, Peoples R China

[3] Beijing Inst Technol Chongqing Innovat Ctr, Chongqing 401120, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2023年 / 49卷 / 10期

基金：

中国国家自然科学基金;

关键词：

LaCrO3; Infrared emissivity; Mg2+doping; ELECTRICAL-PROPERTIES; LA; NI; PERFORMANCE; STABILITY; CA; MG; CO;

D O I：

10.1016/j.ceramint.2023.01.082

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 infrared high emissivity ceramic material plays an important role in thermal protection of hypersonic ve-hicles. LaCrO3, characterized by excellent thermal stability and high emissivity, can be applied as infrared high emissivity material. LaCrO3 and Mg2+ doped LaCrO3 were prepared via solid state reaction method. XRD ana-lyses showed that LaCr1-xMgxO3 (x = 0, 0.1, 0.2, 0.25, 0.3) were single-phase solid solutions. The doping-effect of Mg2+ on the infrared emissivity was investigated. In the range of 2.5-8 mu m, the infrared emissivity of all doped materials had significant improvement, the average emissivity of materials increased from 0.66 to 0.83. In the range above 8 mu m, the emissivity of all materials had a similar trend and compared to LaCrO3, the emissivity of Mg2+ doped LaCrO3 had little decrease.

引用

页码：14997 / 15002

页数：6

共 25 条

[1] Mechanical performance of LaCrO3 doped with strontium and cobalt for SOFC interconnect [J].