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Deformation of Plasma Sprayed Thermal Barrier Coatings PUBLIC ACCESS

[+] Author Affiliations
Ufuk Senturk, Rogerio S. Lima, Christopher C. Berndt

State University of New York at Stony Brook, Stony Brook, NY

Carlos R. C. Lima

UNIMEP Methodist University of Piracicaba, Santa Barbara d’Oeste, SP, Brazil

Paper No. 99-GT-348, pp. V004T02A012; 7 pages
doi:10.1115/99-GT-348
From:
  • ASME 1999 International Gas Turbine and Aeroengine Congress and Exhibition
  • Volume 4: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; IGTI Scholar Award; General
  • Indianapolis, Indiana, USA, June 7–10, 1999
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7861-3
  • Copyright © 1999 by ASME

abstract

The deformation behavior of thermally sprayed partially stabilized zirconia (PSZ) coatings are investigated using Hertzian indentation and four-point bend testing, with in situ acoustic emission monitoring. The experimental deformation curves, together with the corresponding acoustic emission responses and the fracture properties of the material are used in defining the deformation characteristics of the coating (ceramic overlay with metallic bond coal where applicable) and substrate composite system. Experiments are aimed in examining the influence of the bond coat and the coating properties on the form of deformation. Substrate temperature and pauses during spraying are demonstrated to strongly effect the coating properties and the resulting fracture/failure characteristics of the composite system.

Copyright © 1999 by ASME
This article is only available in the PDF format.

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