Al5052和Al6061红外光谱发射率的对比研究  

A Comparative Research on the Infrared Spectral Emissivity of Al5052 and Al6061

作　　者：王文宝[1] 张凯华[2] 于坤[2] 

机构地区：[1]兴义民族师范学院,贵州兴义562400 [2]河南师范大学,河南新乡453007

出　　处：《兴义民族师范学院学报》2015年第4期110-114,118,共6页Journal of Minzu Normal University of Xingyi

基　　金：黔西南州科技局科技计划2013-4;贵州省科学技术基金黔科合J字[2012]2325;贵州省教育厅自然科学基金重点项目(黔教科2010089)资助的课题

摘　　要：利用反射式光谱发射率测量装置在300K至873K之间对两种铝合金Al5052和Al6061的光谱发射率进行了测量,利用最小二乘法对测量数据进行了线性拟合。研究结果表明:在300K至873K之间,Al5052和Al6061的光谱发射率均随温度升高呈线性关系增大;在不同温度点,加热时间对光谱发射率的影响不相同,虽然Al5052与Al6061的组分非常相近,但是两者的光谱发射率却有着较大的差异,特别是在高温段,两者的差异尤其显著。本研究将进一步丰富铝合金的光谱发射率数据,同时为工业上利用辐射测温技术准确测量铝合金表面温度提供了实验依据。In this study, the normal spectral emissivity of aluminum alloys A15052and A16061 were measured by a reflective spectral emissivity measurement apparatus with the temperatures range from 300 up to 873 K.The determined data showed an in- creasing emissivity, this trend was approximated by a linear least~ squares fit. At different temperatures, the influence of the heating time over the spectral emissivity was also different. While the composition of two alloys was broadly similar, there were substantial dif- ferences in normal spectral emissivity between A15052 and A16061.In the process of radiation temperature measurement, the problem that the normal spectral emissivity of two alloys was considered approximately equal may lead to the results of temperature measure- ment with large error.The results of the study will further enrich aluminum alloy spectral emissivity data and provide the experimental basis for its application in temperature measurement in industry.

关 键 词：铝合金 光谱发射率 温度 加热时间 

分 类 号：O432.1[机械工程—光学工程]