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The non-destructive and nano-microstructural characterization of thermal-barrier coatings

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  • Nanomaterials And Surfaces
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Abstract

The durability of thermal barrier coatings (TBCs) plays an important role in the service reliability and maintainability of hot-section components in advanced turbine engines for aerospace and utility applications. Photostimulated luminescence spectroscopy (PSLS) and electrochemical impedance spectroscopy (EIS) are being concurrently developed as complimentary nondestructive evaluation (NDE) techniques for quality control and liferemain assessment of TBCs. This paper discusses recent achievements in understanding the residual stress, phase constituents, and electrochemical resistance (or capacitance) of TBC constituents—with an emphasis on the thermally grown oxide. Results from NDE by PSLS and EIS are correlated to the nano- and microstructural development of TBCs.

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Authors and Affiliations

  1. the Advanced Materials Processing and Analysis Center and the Department of Mechanical, Materials and Aerospace Engineering at the University of Central Florida, Orlando, FL

    Y. H. Sohn, B. Jayaraj, S. Laxman, B. Franke & J. W. Byeon

  2. the Department of Mechanical Engineering at the University of Delaware, Newark, DE

    A. M. Karlsson

Authors
  1. Y. H. Sohn
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  2. B. Jayaraj
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  3. S. Laxman
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  4. B. Franke
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  5. J. W. Byeon
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  6. A. M. Karlsson
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Additional information

Authors’ Note: More information on the authors’ research and education activities can be obtained from mmae.ucf.edu/∼ysohn and me.udel.edu/karlsson.

For more information, contact Y.H. Sohn, University of Central Florida, Advanced Materials Processing and Analysis Center (AMPAC) and Department of Mechanical, Materials and Aerospace Engineering, Orlando, FL 32816-2455, USA; (407) 882-1181; fax (407) 882-1462; e-mail ysohn@mail.ucf.edu, and A.M. Karlsson, Department of Mechanical Engineering, University of Delaware, Newark, DE 19716-3140; (302) 831-6437; fax (302) 831-3619; e-mail karlsson@mde.udel.edu.

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Sohn, Y.H., Jayaraj, B., Laxman, S. et al. The non-destructive and nano-microstructural characterization of thermal-barrier coatings. JOM 56, 53–56 (2004). https://doi.org/10.1007/s11837-004-0292-2

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  • DOI: https://doi.org/10.1007/s11837-004-0292-2

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