56. Evaluation of Two New Thermal Barrier Coating Materials Produced by APS and EB-PVD

  1. Edgar Lara-Curzio and
  2. Michael J. Readey
  1. B. Saruhan1,
  2. U. Schulz1,
  3. P. Bengtsson2,
  4. R. Knoedler3,
  5. P. Moretto4,
  6. F. Taricco5,
  7. R. Vassen6,
  8. G. Pracht6,
  9. C. Friedrich7,
  10. O. Lavigne8,
  11. C. Siry9,
  12. N. Coignard10 and
  13. R. Wing10

Published Online: 26 MAR 2008

DOI: 10.1002/9780470291191.ch56

28th International Conference on Advanced Ceramics and Composites B: Ceramic Engineering and Science Proceedings, Volume 25, Issue 4

28th International Conference on Advanced Ceramics and Composites B: Ceramic Engineering and Science Proceedings, Volume 25, Issue 4

How to Cite

Saruhan, B., Schulz, U., Bengtsson, P., Knoedler, R., Moretto, P., Taricco, F., Vassen, R., Pracht, G., Friedrich, C., Lavigne, O., Siry, C., Coignard, N. and Wing, R. (2004) Evaluation of Two New Thermal Barrier Coating Materials Produced by APS and EB-PVD, in 28th International Conference on Advanced Ceramics and Composites B: Ceramic Engineering and Science Proceedings, Volume 25, Issue 4 (eds E. Lara-Curzio and M. J. Readey), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470291191.ch56

Author Information

  1. 1

    Institute for Materials Research German Aerospace Center (DLR) Germany

  2. 2

    Materials and Process Department Snecma Moteurs Moissy-Cramayel, France

  3. 3

    Alstom Power Support Mannheim, Germany

  4. 4

    Institute for Energy DG-JRC of the EC Petten, the Netherlands

  5. 5

    Avio SpA Turin, Italy

  6. 6

    Institut für Werkstoffe und Verfahren der Energietechnik (IWV1), Forschungszentrum Jülich GmbH, Germany

  7. 7

    Coating Engineering MTU Aero Engines Munich, Germany

  8. 8

    Department of Metallic Materials and Processing ONERA, Chatillon, France

  9. 9

    Materials and Processes Repair Development Lufthansa Technik AG Hamburg, Germany

  10. 10

    Chromalloy UK Nottingham, England

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2004

ISBN Information

Print ISBN: 9780470051528

Online ISBN: 9780470291191

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Keywords:

  • solution precursor plasma spray;
  • slasma spray;
  • thermal barrier coatings;
  • solid oxide fuel cell;
  • thermal cycle

Summary

Due to the limited temperature capability of current topcoat material (8YSZ) of thermal barrier coating (TBC) in gas turbines, world-wide research has been undertaken to identify new candidates for TBC applications above 1200°C. Within the 5th Framework Brite/Euram-research project G4RD-CT-2001-00504, new materials having different composition and crystal structure than those of conventional 8YSZ-TBC have been produced by atmospheric plasma-spraying (APS) and electron-beam physical vapour deposition (EB-PVD) techniques and investigated intensively. The results obtained from two of those new materials are compared with those of the conventional PYSZ coating. Investigations primarily involved the production of powders suitable for plasma-spraying as well as ingots for EB-PVD process. The next step was the optimization of the coating process for both techniques. Coatings were characterized by XRD and microstructural investigation, by determination of different physical properties such as thermal expansion coefficient, specific heat capacity, thermal diffusivity, density and thermal conductivity before and after ageing. These results enabled the evaluation of the potential of these two new materials for an application as thermal barrier coating.