基于稀土Dy离子荧光强度比的温度测试技术  

A temperature measurement technique based on fluorescence intensity ratio of rare earth Dy ion

作　　者：张粟[1] 庞然[1] 姜丽宏[1] 李达[1] 李成宇[1] 张洪杰[1] ZHANG Su;PANG Ran;JIANG Lihong;LI Da;LI Chengyu;ZHANG Hongjie(State Key Laboratory of Rare Earth Resource Utilization,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China)

机构地区：[1]中国科学院长春应用化学研究所稀土资源利用国家重点实验室,长春130022

出　　处：《实验流体力学》2023年第2期115-124,共10页Journal of Experiments in Fluid Mechanics

基　　金：中国科学院青年创新促进会人才项目(2017272)。

摘　　要：大面积表面温度测量技术在风洞测温领域中具有重要意义。为满足更高表面温度的测量需求,亟待开展新型测温技术及温度传感材料的研发。基于稀土离子的热耦合能级荧光强度比进行温度测量是一种新型测温技术。本文合成了一种温敏发光材料(YAG:Dy),研究了50~1000℃范围内稀土Dy^(3+)离子的一对热耦合能级(^(4)F_(9/2)→^(6)H_(15/2),^(4)I_(15/2)→^(6)H_(15/2))的跃迁发光强度比与温度的对应关系。基于该材料,本文开展了荧光强度比测温与红外测温仪测温的对比实验,实验结果表明:两者的测量结果有很高的吻合度,证明该温敏发光材料(YAG:Dy)可用于50~1000℃范围内的温度测量。Large area surface temperature measurement technology is of great significance in the field of wind tunnel temperature measurement.In order to meet the needs of measurement for higher surface temperature,it is urgent to develop new temperature sensing materials and new temperature measurement technology.Temperature measurement based on the fluorescence intensity ratio of the thermal coupling energy levels of rare earth ions is a new temperature measurement technology.In this work,a temperature sensitive luminescent material(YAG:Dy)was synthesized.The corresponding relationship between the temperature and the ratio of emission intensity of the thermal coupling energy levels of rare earth Dy^(3+) ions(^(4)F_(9/2)→^(6)H_(15/2),^(4)I_(15/2)→^(6)H_(15/2))was investigated in the temperature range from 50 to 1000℃.Based on this material,a comparative experiment of two temperature measurements that the fluorescence intensity ratio measurement and the infrared thermometer is carried out.It is shown that the measurement results of the two technologies have a high degree of agreement,which proves that the temperature sensitive luminescent material(YAG:Dy)can be used for temperature measurement in the range of 50–1000℃.

关 键 词：稀土Dy^(3+)离子 热耦合能级 荧光强度比 测温涂层 温度分布 温度测量 

分 类 号：O616[理学—无机化学]