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Life Enhancement of Gas Turbine Combustor Liner Through Thermal Barrier Coating

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Abstract

The life enhancement program of an aero gas turbine combustor liner has been taken up through thermal barrier coating. Yttria-stabilized zirconia with a composition of Zr2O2 + 8 wt.% Y2O3 has been applied by atmospheric plasma spray on newly manufactured liner. A remarkable improvement in liner life has been observed under severe service condition. However, peel off of coating is noticed on the serviced components which are premature withdrawn for any other reasons. Reason for peel off has been studied metallurgically in detail. Coated samples were subjected to cross-sectional microanalysis. Based on the microanalysis suitable repair procedures are being adopted for serviced components. The process found very effective for a better life.

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Authors and Affiliations

  1. Regional Centre for Military Airworthiness (Engines), CEMILAC, Bangalore, India

    R. K. Mishra

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  1. R. K. Mishra
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Correspondence to R. K. Mishra.

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Mishra, R.K. Life Enhancement of Gas Turbine Combustor Liner Through Thermal Barrier Coating. J Fail. Anal. and Preven. 17, 914–918 (2017). https://doi.org/10.1007/s11668-017-0323-2

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  • DOI: https://doi.org/10.1007/s11668-017-0323-2

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