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Journal of Thermal Spray Technology

, Volume 7, Issue 4, pp 481–483 | Cite as

Thermal spray manufacturing issues in coating IGT hot section components

  • P. Sahoo
  • T. Carr
  • R. Martin
  • F. Dinh
ASME Paper

Abstract

The desire to improve the performance of gas turbine engines has led to higher operating temperatures in the turbine sections of the engine. Materials used for hot section turbine blades and vanes are not resistant to hot corrosion, and therefore require protective coatings. This paper reviews the current art and technology of thermally sprayed MCrAlY and TB coatings onto hot section components. The issues in applying such coatings will be discussed, along with references to manufacturing issues on the shop floor. The difficulties inherent in applying a line-of-sight coating to complex geometries will be discussed. The testing, evaluation, and performance characteristics of typical coatings are discussed.

Keywords

coatings hot sections components manufacturing MCrAlY TBC thermal spray 

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References

  1. 1.
    V. Srinivasan, High-Temperature Corrosion and Erosion in Gas Turbine Engines: Where Do We Stand?, JOM, Dec 1994, p 34Google Scholar
  2. 2.
    A.J. Scalzo, R.L. Bannister, M. DeLorso, and G.S. Howard, Edition of Westinghouse Heavy-Duty Power Generator and Industrial Combustion Turbines, Trans. ASME, Vol 118, April 1996, p 316–330Google Scholar

Copyright information

© ASM International 1998

Authors and Affiliations

  • P. Sahoo
    • 1
  • T. Carr
    • 2
  • R. Martin
    • 3
  • F. Dinh
    • 3
  1. 1.TAFA, Inc.USA
  2. 2.Westinghouse Electric CorporationUSA
  3. 3.Sermatech Technical ServicesUSA

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