基于稀土Dy离子荧光强度比的温度测试技术

张粟; 庞然; 姜丽宏; 李达; 李成宇; 张洪杰

doi:10.11729/syltlx20210176

基于稀土Dy离子荧光强度比的温度测试技术

doi: 10.11729/syltlx20210176

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

基金项目: 中国科学院青年创新促进会（2017272）

详细信息

作者简介:
张粟：（1983—），男，安徽宿州人，博士，研究员。研究方向：稀土光功能材料，发光温度测量技术。通信地址：吉林省长春市朝阳区人民大街5625号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（130022）。E-mail：zhangsu@ciac.ac.cn

通讯作者:
E-mail：zhangsu@ciac.ac.cn

中图分类号: O616
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- 被引次数: 0
出版历程
- 收稿日期: 2021-11-04
- 录用日期: 2022-01-30
- 修回日期: 2021-12-31
- 网络出版日期: 2022-09-13

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

State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China

摘要

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Dy³⁺离子的一对热耦合能级（⁴F_9/2→⁶H_15/2，⁴I_15/2→⁶H_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。
- 稀土Dy³⁺离子 /
- 热耦合能级 /
- 荧光强度比 /
- 测温涂层 /
- 温度分布 /
- 温度测量
Abstract: 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: Dy³⁺） was synthesized. The corresponding relationship between the temperature and the ratio of emission intensity of the thermal coupling energy levels of rare earth Dy³⁺ ions （⁴F_9/2→⁶H_15/2, ⁴I_15/2→⁶H_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: Dy³⁺） can be used for temperature measurement in the range of 50–1000 ℃.
- rare earth Dy³⁺ ion /
- thermal coupling energy level /
- fluorescence intensity ratio /
- temperature measuring coating /
- temperature distribution /
- temperature measurement

HTML全文

图 1 稀土Dy^{3 +}离子的能级图

Figure 1. The energy levels of Dy^{3 +}

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图 2 喷涂YAG:Dy材料的陶瓷片在自然光和365 nm紫外灯下的照片

Figure 2. The photos of ceramic sheet sprayed with YAG:Dy under natural light and 365 nm UV lamp

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图 3 室温下YAG:Dy的发射光谱（室温）

Figure 3. The emission spectrum of YAG:Dy（room temperature）

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图 4 室温下YAG:Dy的激发光谱（室温）

Figure 4. The excitation spectrum of YAG:Dy（room temperature）

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图 5 YAG:Dy在不同温度下的发射光谱

Figure 5. The emission spectrum of YAG:Dy at different temperatures

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图 6 温度标定实验装置

Figure 6. The temperature calibration experimental device

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图 7 温度标定系统示意图

Figure 7. Schematic diagram of temperature calibration system

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图 8 温度测试仪器图

Figure 8. Photo of temperature test instruments

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图 9 不同温度下喷涂YAG:Dy材料的陶瓷片的照片

Figure 9. Photos of ceramic sheet sprayed with YAG:Dy material at different temperatures

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图 10 650 ℃时的发光图像处理

Figure 10. Image processing of emission at 650 ℃

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图 11 两个波段发光强度比值与温度的关系

Figure 11. The relationship between the ratio of two bands and temperature

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图 12 陶瓷片在电炉上的照片

Figure 12. Photo of ceramic sheet sprayed with YAG:Dy on electric furnace

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图 13 使用荧光强度比法获得的陶瓷片表面温度分布

Figure 13. Surface temperature distribution of ceramic sheet obtained by fluorescence intensity ratio method

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图 14 红外热像仪测得的陶瓷片表面温度分布

Figure 14. Surface temperature distribution of ceramic sheet measured by Infrared thermal imager

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图 15 荧光强度比法和红外热像仪2测试结果的比较

Figure 15. Comparison between fluorescence intensity ratio method and infrared thermal imager 2 test results

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表 1 相机型号及主要参数

Table 1. Camera model and main parameters

名称	品牌	相机型号	像素数	波长
CCD相机	Andor	iXon Ultra 897	512×512	可见光
红外热像仪1	上海都泰	DTC-111M	764×480	0.85～1.1 µm
红外热像仪2	上海都泰	DTC-1400	382×288	7.5～13 µm

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表 2 带通滤波片主要参数

Table 2. The parameters of bandpass filter

名称	中心波长	带宽	透过率	截止范围	截止深度
滤波片1	455±2 nm	10 nm	＞85%	200～800 nm	OD3～OD4
滤波片2	485±2 nm	10 nm	＞80%	200～750 nm	OD3～OD4

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表 3 拟合参数表

Table 3. Fitting parameters

参数	值
y₀	5593.26623
A₁	−3707.78694
t₁	−0.01571
A₂	−208.4351
t₂	−0.14232
A₃	−5354.53068
t₃	−5.94912
Reduced Chi-Sqr	67.37487
R-Square（COD）	0.99946
Adjusted R-Square	0.99923

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