基于集成黑体法的(1000~1500)℃石墨材料高温红外光谱发射率测量研究
投稿时间:2020-06-23  修订日期:2020-08-30  点此下载全文
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作者单位E-mail
宋旭尧 中国计量科学研究院 热工所 songxuyao@126.com 
董伟 中国计量科学研究院 热工所 dongw@nim.ac.cn 
潘奕捷 中国计量科学研究院 热工所  
原遵东 中国计量科学研究院 热工所  
卢小丰 中国计量科学研究院 热工所  
基金项目:国家自然科学基金(11772318)
中文摘要:建立了基于集成黑体法的材料高温红外光谱发射率测量理论模型,重点讨论了不等温集成黑体空腔有效发射率、观测因子、样品材料外推温降因素的影响。基于集成黑体法搭建了以傅里叶红外光谱仪为红外辐射探测系统的高温红外光谱发射率测量装置。基于蒙特卡罗光线追迹法数值开展了集成黑体有效发射率数值模拟,并进行了实验验证。讨论了辐射源尺寸效应、光谱响应度线性度等非理想因素对集成黑体法高温光谱发射率测量的影响。开展了石墨材料在1000℃、1300℃、1500℃的红外光谱发射率实验研究,并与已公开发表的测量结果进行了比对。本文结果与文献数据优于5%的良好一致性,验证了集成黑体方法在高温发射率测量中的可行性。
中文关键词:计量学  红外光谱发射率  集成黑体法  高温  傅里叶红外光谱仪  石墨
 
Research on the infrared spectral emissivity measurement of a graphite material in a high temperature range of (1000~1500)℃ using integrated blackbody principle
Abstract:A theoretical model of the infrared spectral emissivity measurement of materials using the integrated blackbody principle is established. The effects of the effective emissivity of the non-isothermal integrated blackbody cavity, the observation coefficient and the temperature drop during the sample material push-out are mainly investigated. The device of the infrared spectral emissivity measurement using the integrated blackbody principle is set up which use a Fourier-Transform infrared spectrometer as the infrared radiation detection instrument. The effective emissivity of the integrated blackbody cavity is simulated using Monte-Carlo ray tracing method and the associated validation experiments are carried out. The effects of non-ideal factors, including the Size-of-Source Effect and linearity of the spectral responsivity, on the infrared spectral emissivity measurement using the integrated blackbody principle are investigated. The experimental measurements of the infrared spectral emissivity of a graphite material are carried out at the temperatures of 1000 ℃, 1300 ℃ and 1500℃, respectively. The obtained results and comparisons with associated published measurements are reported. The results in this article are in good agreement with the literature data better than 5%, which verifies the feasibility of the emissivity measurement method using the integrated blackbody principle under high temperature.
keywords:Metrology  Infrared spectral emissivity  Integrated blackbody principle  High-temperature  Fourier-Transform infrared spectrometer  Graphite
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