Changes in electrochemical impedance with microstructural development in TBCs |
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| Authors: | B Jayaraj S Vishweswariah V H Desai Y H Sohn |
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| Affiliation: | (1) the Advanced Materials Processing and Analysis Center at the University of Central Florida in Orlando, Orlando, USA;(2) the Department of Mechanical, Materials and Aerospace Engineering at the University of Central Florida in Orlando, Orlando, USA |
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| Abstract: | Thermal barrier coatings (TBCs) are improving the performance and efficiency of advanced gas turbine engines by allowing higher
inlet temperature and insulation of critical hot-section components. Monitoring the integrity of TBCs prior to failure is
critical to the overall performance of gas turbine en gines and requires a robust nondestructive evaluation (NDE) technique.
In this paper, changes in electrochemical impedance with microstructural degradation of critical constituents in TBCs are
summarized for the development of electrochemical impedance spectroscopy as an NDE technique for TBCs. |
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