Microstructure and Oxidation Behavior of Atmospheric Plasma Sprayed Thermal Barrier Coatings

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Avcı A., Akdoğan Eker A., Eker B.

in: Exergetic, Energetic and Environmental Dimensions, Ibrahim DINCER,Can Ozgur Colpan,Onder Kizilkan, Editor, Elsevier Science, Oxford/Amsterdam , Oshawa, pp.793-814, 2018

  • Publication Type: Book Chapter / Chapter Research Book
  • Publication Date: 2018
  • Publisher: Elsevier Science, Oxford/Amsterdam 
  • City: Oshawa
  • Page Numbers: pp.793-814
  • Editors: Ibrahim DINCER,Can Ozgur Colpan,Onder Kizilkan, Editor
  • Yıldız Technical University Affiliated: Yes


Technological developments create harsh environmental operating conditions such as high temperature, mechanical loading, oxidation, corrosion, and erosion. Metals may not provide the necessary properties for operating conditions in which a ceramic (oxide and nitride) is deposited on a substrate as a protective layer. Ceramic materials have been used in many high-temperature applications as refractors owing to their high melting temperature. These refractor ceramic materials need to have basic properties, phase stability at a high temperature, a high thermal expansion coefficient, and low thermal conductivity. Elevated pressure turbine blades are one of the biggest challenges engineers need to overcome. Today, they can resist gas temperatures higher than the melting point of the underlying substrate metal. This phenomenon would not have been possible if it were not for the ultimate strength of superalloys and the development of coatings. Also, the isolation of metallic substrates provides the ability to work in higher temperature close to the melting point of the substrate. Thermal barrier coatings (TBCs) were first used for aerospace applications. Calcia-stabilized zirconia and frit enamels were deposited onto the exh