Optimisation of FGM TBC and their thermal cycling stability

Michael Gasik, Akira Kawasaki, Yan Sheng Kang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

12 Citations (Scopus)

Abstract

Application of FGM concept for thermal barrier coatings (TBC) provides a superior thermal stress relaxation over homogeneous or duplex coatings. It was demonstrated that FGM TBC have better oxidation resistance and longer lifetime during test conditions. In this work, new FGM TBC system was designed using high-velocity oxygen flame (HVOF) coating process. After coatings optimisation, coating layer was subjected to a hot burner test for thermal fatigue cycling with increasing heat load. It was found that FGM TBC has successfully withstood thermal cycling and prevented visible delamination or transverse cracks. New coating design may give an opportunity to develop a cost-effective FGM TBC system for gas turbine applications.

Original languageEnglish
Title of host publicationFunctionally Graded Materials VIII, FGM2004 - Proceedings of the 8th International Symposium on Multifunctional and Functionally Graded Materials, (FGM2004)
PublisherTrans Tech Publications Ltd
Pages9-14
Number of pages6
ISBN (Print)0878499709, 9780878499700
DOIs
Publication statusPublished - 2005 Jan 1
Event8th International Symposium on Multifunctional and Functionally Graded Materials, FGM2004 - Leuven, Belgium
Duration: 2004 Jul 112004 Jul 14

Publication series

NameMaterials Science Forum
Volume492-493
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Other

Other8th International Symposium on Multifunctional and Functionally Graded Materials, FGM2004
CountryBelgium
CityLeuven
Period04/7/1104/7/14

Keywords

  • Alumina
  • Coatings
  • Hot burner test
  • Residual stresses
  • Superalloys
  • TBC
  • Zirconia

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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