| LI Rong-jiu,DENG Chang-guang,HU Yong-jun,DENG Zi-qian,MAO Jie.Research Progress on Characterization Methods of Thermal Barrier Coatings Prepared by Plasma Spraying-Physical Vapor Deposition[J],49(11):124-140 |
| Research Progress on Characterization Methods of Thermal Barrier Coatings Prepared by Plasma Spraying-Physical Vapor Deposition |
| Received:March 06, 2020 Revised:October 19, 2020 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2020.11.014 |
| KeyWord:thermal barrier coating plasma spraying-physical vapor deposition (PS-PVD) characterization methods impedance spectroscope |
| Author | Institution |
| LI Rong-jiu |
School of Materia and Energy, Guangdong University of Technology, Guangzhou , China;National Engineering Laboratory for Modern Materials Surface Engineering Technology, Key Lab of Guangdong for Modern Surface Engineering Technology, Guangdong Institute of New Materials, Guangzhou , China |
| DENG Chang-guang |
National Engineering Laboratory for Modern Materials Surface Engineering Technology, Key Lab of Guangdong for Modern Surface Engineering Technology, Guangdong Institute of New Materials, Guangzhou , China |
| HU Yong-jun |
School of Materia and Energy, Guangdong University of Technology, Guangzhou , China |
| DENG Zi-qian |
National Engineering Laboratory for Modern Materials Surface Engineering Technology, Key Lab of Guangdong for Modern Surface Engineering Technology, Guangdong Institute of New Materials, Guangzhou , China |
| MAO Jie |
National Engineering Laboratory for Modern Materials Surface Engineering Technology, Key Lab of Guangdong for Modern Surface Engineering Technology, Guangdong Institute of New Materials, Guangzhou , China |
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| Abstract: |
| Plasma spraying-physical vapor deposition is a novel process for preparing thermal barrier coatings. The advantages of PS-PVD process were summarized, including high deposition efficiency, flexible preparation of different microstructures and excellent application of complex structural artifacts. Based on this, the test principle and process of different characterization methods were introduced briefly and the recent research progress of the characterization methods applied to PS-PVD coatings was mainly reviewed. The characterizationmethods of organizational microstructure and phase included XRD, SEM, TEM, EBSD, etc. The characterization methods of thermal protection performance included thermal insulation performance, isothermal/cyclic oxidation, thermal shock performance and hot corrosion performance. The characterization methods of mechanical properties included tensile performance, three/four-point bending test, erosion resistance and nano-indentation technique. The electrochemical characterization method called impedance spectroscopy was introduced in detail. Finally, the accuracy, convenience, objectivity and other features of different characterization methods were summarized, and some corresponding evaluations and improvement proposals were proposed based on the advantages and disadvantages of different technologies.Three key development directions of PS-PVD are prospected:convenient non-contact diagnosis methods, high-precision characterization of coating microstructures and properties and application of high-efficiency simulation technology. |
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