Effect of La content on infrared radiation performance of lanthanum-cerium oxides for high temperature application

Huang Jianping; Zhang Xiukuang; Fang Tiehui; Liu Binbin; Lv Tiezheng; Mao Zuli

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Effect of La content on infrared radiation performance of lanthanum-cerium oxides for high temperature application

机译：La含量对高温施用镧 - 氧化铈红外辐射性能的影响

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Lanthanum-cerium oxides have promising potential for high temperature thermal protection. In this paper, lanthanum-cerium oxides with different La contents were synthesized by hydrothermal method and subsequent thermal treatment. The effect of La content on the microstructure and infrared emissivity were thoroughly studied. The infrared emissivity in 2.5-10 mu m wavelength band of the samples increases with the doping of La content. Compared with pure CeO2, the emissivity of La2Ce2O7 increased 32.4% at 600 degrees C and 16.9% at 800 degrees C, respectively. The emissivity enhancement is attributed to the free carrier absorption and lattice absorption in wavelength band 2.5-10 mu m. The enhanced emissivity is of great significance for the radiation thermal control in high temperature.

机译：镧 - 氧化铈具有高温热保护的有希望的潜力。本文通过水热法合成了具有不同La内容物的镧 - 氧化铈和随后的热处理。彻底研究了La含量对微观结构和红外发射率的影响。样品的2.5-10μm波长带中的红外发射率随着LA含量的掺杂而增加。与纯CeO2相比，La2O2O7的发射率分别在600℃下增加32.4％，分别在800℃下增加了16.9％。发射率增强归因于波长带中的自由载体吸收和晶格吸收。增强的发射率对高温辐射热控制具有重要意义。

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来源
《Optical Materials》 |2020年第10期|110211.1-110211.6|共6页
作者
Huang Jianping; Zhang Xiukuang; Fang Tiehui; Liu Binbin; Lv Tiezheng; Mao Zuli;
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作者单位

Hunan Inst Technol Res Inst Automobile Parts Technol Hengyang 421002 Peoples R China;

Hunan Univ Sch Mat Sci & Engn Changsha 410082 Peoples R China;

Hunan Univ Sch Mat Sci & Engn Changsha 410082 Peoples R China;

Hunan Univ Modern Engn Training Ctr Changsha 410082 Peoples R China;

Hunan Inst Technol Res Inst Automobile Parts Technol Hengyang 421002 Peoples R China;

Hunan Inst Technol Res Inst Automobile Parts Technol Hengyang 421002 Peoples R China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类
关键词
Infrared emissivity; Hydrothermal; La2Ce2O7; Ceria; Thermal radiation;

机译：红外发射率;水热;LA2CE2O7;CERIA;热辐射;

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Effect of La content on infrared radiation performance of lanthanum-cerium oxides for high temperature application

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