| 热致变色材料辐射和光学特性研究 |
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| 引用本文： | 范德松,李强,宣益民.热致变色材料辐射和光学特性研究[J].工程热物理学报,2011(8). |
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| 作者姓名： | 范德松 李强 宣益民 |
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| 作者单位： | 南京理工大学能源与动力工程学院; |
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| 基金项目： | 国家自然科学基金资助项目(No.50936002;No.50876044) |
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| 摘 要： | 采用固相反应法制备了相变温度接近室温的热致变色材料,研究了不同掺杂元素和掺杂浓度对热致变色材料辐射和光学特性的影响,并利用K-K分析模型导出了热致变色材料的光学常数。结果表明:热致变色材料LCSMO和LSMO(x=0.175)的发射率在相变温度附近出现剧烈变化,并且光常数在很大的频域范围内可自主调制。
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| 关 键 词： | 可变发射率 吸收率 光谱反射率 K-K分析 锰氧化物 |
Investigation on Radiative and Optical Properties of Thermochromatic Materials |
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| FAN De-Song LI Qiang XUAN Yi-Min.Investigation on Radiative and Optical Properties of Thermochromatic Materials[J].Journal of Engineering Thermophysics,2011(8). |
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| Authors: | FAN De-Song LI Qiang XUAN Yi-Min |
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| Affiliation: | FAN De-Song LI Qiang XUAN Yi-Min (School of energy and power engineering,Nanjing 210094,China) |
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| Abstract: | The thermochromatic materials,of which phase transition temperature is near room temperature,are prepared by standard solid state reaction method.The influences of component fraction and doping element on the radiative and optical properties of the materials are studied. Based on the spectral reflectivity data of the materials,the optical constants are obtained through the Kramers-Kroning analysis.The result shows that the emissivity of the materials(La_(0.7)Ca_(0.2)Sr_(0.1)MnO_3 and La_(0.825)Sr_(0.175)MnO... |
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| Keywords: | variable emissivity absorptivity spectral reflectivity Kramers-Kroning analysis manganese oxide |
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