Chapter 42. High-Temperature Aging of Eb-Pvd Thermal Barrier Coatings

  1. Mrityunjay Singh and
  2. Todd Jessen
  1. U. Schulz,
  2. K. Fritscher,
  3. C. Leyens and
  4. M. Peters

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294703.ch42

25th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 22, Issue 4

25th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 22, Issue 4

How to Cite

Schulz, U., Fritscher, K., Leyens, C. and Peters, M. (2001) High-Temperature Aging of Eb-Pvd Thermal Barrier Coatings, in 25th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 22, Issue 4 (eds M. Singh and T. Jessen), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294703.ch42

Author Information

  1. DLR — German Aerospace Center Institute of Materials Research D-51170 Cologne, Germany

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2001

ISBN Information

Print ISBN: 9780470375747

Online ISBN: 9780470294703

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Keywords:

  • thermal barrier coatings;
  • sintering behavior;
  • partially yttria-stabilized zirconia;
  • bond coat;
  • thermally grown oxide

Summary

Thermal barrier coatings (TBCs) are currently used for lifetime improvement of highly loaded turbine blades and vanes in aeroengines and land-based gas turbines. the current prime choice are partially yttria stabilized zirconia EB-PVD TBCs. Next generation TBCs require improved sinter resistance, phase stability, thermal insulation, and a controlled interface to the metal. the paper presents the phase transformation and sintering behavior of current EB-PVD TBCs, and furthermore, modified TBC systems such as discrete alumina interlayers, graded alu- mindzirconia transition layers, and fully yttria stabilized zirconia ceramics. Microstructure and lifetime of these TBC systems are discussed with regard to processing and properties.