上海交通大学学报

上海交通大学学报 >

2023 , Vol. 57 >Issue 9: 1186 - 1195

DOI: https://doi.org/10.16183/j.cnki.jsjtu.2022.252

电子信息与电气工程

电子束物理气相沉积热障涂层隔热性能的磷光寿命在线测量

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  • 1.上海交通大学 材料科学与工程学院,上海 200240
    2.上海交通大学 机械动力与工程学院,上海 200240
    3.南京航空航天大学 材料科学与技术学院, 南京 210016
    4.中国航发北京航空材料研究院,北京 100095
刘郑红(1997-),硕士生,从事热障涂层测温研究.

收稿日期: 2022-07-01

  修回日期: 2022-08-12

  录用日期: 2022-08-31

  网络出版日期: 2022-10-24

基金资助

国家自然科学基金(51905268)

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Evaluation of Thermal Insulation Performance of EB-PVD YSZ Thermal Barrier Coatings by Phosphorescence Lifetime Online Measurement

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  • 1. School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
    2. School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
    3. College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
    4. AECC Beijing Institute of Aeronautical Materials, Beijing 100095, China

Received date: 2022-07-01

  Revised date: 2022-08-12

  Accepted date: 2022-08-31

  Online published: 2022-10-24

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摘要

精确在线测量热障涂层(TBCs)在热梯度环境下的真实隔热效果对热障涂层的设计以及开发具有重要意义.采用电子束物理气相沉积(EB-PVD)制备了含Eu掺杂的氧化钇部分稳定氧化锆(YSZ:Eu)表层、YSZ中间层与Dy掺杂YSZ(YSZ:Dy)底层的磷光传感热障涂层.利用磷光信号的热淬灭特性对温度梯度环境下YSZ涂层表面以及黏结层/YSZ层界面温度进行在线测量,对EB-PVD YSZ热障涂层的真实隔热效果进行评估.结果表明:平均厚度为113 μm的YSZ涂层在高温温度梯度下能够实现的平均温降为66.5 ℃,在温度区间为400~700 ℃内的平均热导率为(0.87±0.15) W/(m·K),略小于传统激光脉冲法的测量值 (0.95±0.02) W/(m·K).上述结果证实了磷光在线测温技术用于热障涂层隔热效果测量的可靠性,为热障涂层隔热效果的实时监控提供了一种有效方法.

关键词： 热障涂层; 磷光在线测温; 隔热效果; 热导率; 电子束物理气相沉积

本文引用格式

刘郑红, 余亚丽, 程伟伦, 李牧之, 杨丽霞, 赵晓峰, 彭迪, 牟仁德, 刘德林 . 电子束物理气相沉积热障涂层隔热性能的磷光寿命在线测量[J]. 上海交通大学学报, 2023 , 57(9) : 1186 -1195 . DOI: 10.16183/j.cnki.jsjtu.2022.252

Abstract

Precise measurement of the thermal insulation performance of thermal barrier coatings (TBCs) under the thermal gradient environment is important for the design and development of TBCs. A phosphorescent sensor TBC which contains an Eu doped yttria-stabilized zirconia (YSZ:Eu) surface layer, a YSZ intermediate layer, and a YSZ:Dy bottom layer, is designed and prepared by electron beam physical vapor deposition (EB-PVD). Based on the thermal quenching characteristics of phosphorescence signal, the surface temperature of the YSZ coating and the interface temperature of the bond-coat/YSZ layer are measured online in a temperature gradient environment, and the real thermal insulation effect of the EB-PVD YSZ thermal barrier coating is evaluated. The results show that the EB-PVD YSZ coating with a thickness of 113 μm can achieve an average temperature decrease of 66.5 ℃. The average thermal conductivity of the coating is (0.87±0.15) W/(m·K) in the temperature range between 400 and 700 ℃, which is slightly lower than the value (0.95±0.02) W/(m·K) obtained by using the traditional laser flash method. The above results validate the reliability of online phosphorescence temperature measurement technique, and provide an effective method to monitor the thermal insulation effect of TBCs in real time.

Key words： thermal barrier coatings (TBCs); phosphorescence online temperature measurement; thermal insulation; thermal conductivity; electron beam physical vapor deposition (EB-PVD)

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