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我国稀土资源丰富,急需进一步发展稀土工业和推广稀土的应用。然而,目前对稀土材料的热辐射特性研究得不够,仍缺乏中温下稀土氧化物光谱比辐射率的精确数据。我们测定了La_2O_3、Nd_2O_3、Sm_2O_3、Dy_2O_3在400℃时的光谱比辐射率,以及它们与温度变化的关系。我们采用棱镜红外单色仪、TGS探测器及锁相放大器等组成的测量系统进行测定。黑体炉、样品炉的温度变化控制在±0.5℃以内。测量时,我们将该系统与中科院上海技术物
Rare earth resources in our country, urgent need to further develop the rare earth industry and promote the application of rare earth. However, the research on thermal radiation characteristics of rare earth materials is not enough at present, and accurate data on the spectral emissivity of rare earth oxides at medium temperature are still lacking. We measured the spectral emissivity of La_2O_3, Nd_2O_3, Sm_2O_3 and Dy_2O_3 at 400 ℃ and their relationship with temperature. We use the prism infrared monochromator, TGS detector and lock-in amplifier and other components of the measurement system for measurement. Black body furnace, sample furnace temperature changes within ± 0.5 ℃. Measurement, we will be the system and the Chinese Academy of Sciences Shanghai technology