文献类型： 外文期刊

第一作者： Li Jianchao

作者： Li Jianchao;He Qing;Lv Yufen;Liang Likang

作者机构：

关键词： thermal barrier coatings (TBCs); nondestructive testing (NDT); ultrasonic testing (UT); acoustic emission (AE); impedance spectroscopy (IS); infrared thermography (IRT); photoluminescence piezo spectroscopy (PLPS); terahertz time domain spectroscopy (THz-TDS)

期刊名称：CHINA SURFACE ENGINEERING （ 影响因子：0.6； 五年影响因子：0.4 ）

ISSN： 1007-9289

年卷期： 2019 年 32 卷 2 期

页码：

收录情况： SCI

摘要： Thermal barrier coatings (TBCs) are widely used in gas turbine engines to increase the gas inlet temperature of turbines and improve hot end component service life. TBCs are multi-phase, multi-interface and heterogeneous, and their service conditions are harsh and complex. Finding a non-destructive test method, which can reflect the coating quality and predict remaining life by characterizing coating microstructure, defects, thermal properties, stress, etc., is critical to the safety and reliability of the hot end components of the engine. In this paper, the principles of ultrasonic testing (UT), acoustic emission technology (AE), infrared thermography (IRT), impedance spectroscopy (IS) and photoluminescence piezo spectroscopy (PLPS) were summarized and their applications in nondestructive testing of thermal barrier coatings were presented. The terahertz time-domain spectroscopy (THz-TDS) technique and its application in thermal barrier coatings were introduced in detail. Finally, the detection abilities of the above non-destructive testing methods were summarized, and the non-destructive testing methods of thermal barrier coatings were prospected.

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