Isothermal and Cyclic Oxidation of an Air Plasma-Sprayed Thermal Barrier Coating System PUBLIC ACCESS

[+] Author Affiliations
J. Allen Haynes, Mattison K. Ferber, Wallace D. Porter

Oak Ridge National Laboratory, Oak Ridge, TN

E. Douglas Rigney

University of Alabama at Birmingham, Birmingham, AL

Paper No. 96-GT-286, pp. V005T13A010; 8 pages
  • ASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition
  • Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; General
  • Birmingham, UK, June 10–13, 1996
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7876-7
  • Copyright © 1996 by ASME


Thermogravimetric methods for evaluating bond coat oxidation in plasma-sprayed thermal barrier coating (TBC) systems were assessed by high-temperature testing of TBC systems with air plasma-sprayed (APS) Ni-22Cr-10Al-1Y bond coatings and yttria-stabilized zirconia top coatings. High-mass thermogravimetric analysis (at 1150°C) was used to measure bond coat oxidation kinetics. Furnace cycling was used to evaluate APS TBC durability. This paper describes the experimental methods and relative oxidation kinetics of the various specimen types. Characterization of the APS TBCs and their reaction products are discussed.

Copyright © 1996 by ASME
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