【摘要】 本文介绍一种应用能量比较法测量材料发射率的装置,并给出实验结果。装置结构简单,通用性强,控温精度高,试件易于制备。总的测量不确定度为±(2～4)%。更多还原

【Abstract】 An instrument for measuring material emissivity between 300 and 1000℃ is described and the results of measurement are presented.Applying the principle of relative measurement,it is simple in structure and easy to reach precision temperature control.Besides,the test specimens are easy to prepare.The error analysis shows that the total uncertainty is within the range of ±(2~4)%.更多还原