Chapter 45. Thermomechanical Behavior of Plasma Sprayed Thermal Barrier Coatings

  1. Hau-Tay Lin and
  2. Mrityunjay Singh
  1. Rolf W. Steinbrech

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294758.ch45

26th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 23, Issue 4

26th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 23, Issue 4

How to Cite

Steinbrech, R. W. (2002) Thermomechanical Behavior of Plasma Sprayed Thermal Barrier Coatings, in 26th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 23, Issue 4 (eds H.-T. Lin and M. Singh), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294758.ch45

Author Information

  1. Forschungszentrum Jülich GmbH Institute for Materials and Processes in Energy Systems 52425 JUlich, Germany

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2002

ISBN Information

Print ISBN: 9780470375792

Online ISBN: 9780470294758

SEARCH

Keywords:

  • plasma sprayed ;
  • thermomechanical experiments;
  • stabilised zirconia;
  • anisotropy;
  • intra-splat cracks

Summary

Results of fractographic and thermomechanical experiments on plasma sprayed thermal barrier coatings (TBCs) are presented which elucidate some of the structure/property aspects related to elasticity and fracture. The fractography results focus on the lamellar microstructure of TBCs with inter– and intra-splat cracks as the most prominent defects. The stiffness of the TBCs is addressed with respect to porosity, residual stress, applied stress, anisotropy of the spraying splats and annealing effects. The fracture behaviour is analysed in terms of segmentation and delamination cracks. The influence of inter– and intra-splat cracks on both macroscopic properties, stiffness and crack resistance, is discussed.