Optimisation of FGM TBC and their thermal cycling stability

M Gasik, Akira Kawasaki, YS Kang

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

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
EditorsO VanderBiest, M Gasik, J Vleugels
PublisherTrans Tech Publications Ltd.
Pages9-14
Number of pages6
ISBN (Print)0-87849-970-9
DOIs
Publication statusPublished - 2005
MoE publication typeA4 Article in a conference publication
EventInternational Symposium on Multifunctional and Functionally Graded Materials - Leuven, Belgium
Duration: 11 Jul 200414 Jul 2004
Conference number: 8

Publication series

NameMaterials Science Forum
PublisherTRANS TECH PUBLICATIONS LTD
Volume492-493
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

ConferenceInternational Symposium on Multifunctional and Functionally Graded Materials
Abbreviated titleFGM
CountryBelgium
CityLeuven
Period11/07/200414/07/2004

Keywords

  • coatings
  • TBC
  • hot burner test
  • superalloys
  • alumina
  • zirconia
  • residual stresses

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