Paper Title:
Advances in the Field of New Smart Thermal Barrier Coatings
  Abstract

This paper deals with the development of a new synthesis technique for functional materials such as Yttria Stabilized Zirconia (YSZ) in the field of thermal barrier coatings. Currently, Thermal Barrier Coatings (TBCs) are manufactured by dry route technologies (EB-PVD or plasma spray) but such methods are directional and often require costly investments and complex operations. For these applications, the sol-gel route, a non directional method, is developed, to process, by suitable chemical modifications, nanocrystalline materials with a controlled morphology. The main advantage of this method is to decrease the crystallization temperature, much lower than the conventional processes, allowing the synthesis of reactive substituted zirconia powders with nanometric particles size. In this study, several suitable architectures for thermal barrier coatings have been achieved in order to show that this process is appropriate for repairing damaged TBC compared to conventional processes. The next step is to investigate spallation mechanisms and overall TBC durability by cyclic oxidation. Preliminary results are promising and research will be develop further to optimize both processing and cyclic oxidation behavior.

  Info
Periodical
Edited by
Pietro VINCENZINI and Ghislain MONTAVON
Pages
136-141
DOI
10.4028/www.scientific.net/AST.66.136
Citation
L. Pin, F. Ansart, J. Fenech, P. Lours, J. P. Bonino, J. Sniezewski, Y. Le Maoult, "Advances in the Field of New Smart Thermal Barrier Coatings", Advances in Science and Technology, Vol. 66, pp. 136-141, 2010
Online since
October 2010
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