Journal of Thermal Spray Technology

, Volume 22, Issue 5, pp 646–658

Plasma-Sprayed Thermal Barrier Coatings: New Materials, Processing Issues, and Solutions

  • Georg Mauer
  • Maria Ophelia Jarligo
  • Daniel Emil Mack
  • Robert Vaßen
Peer Reviewed

DOI: 10.1007/s11666-013-9889-8

Cite this article as:
Mauer, G., Jarligo, M.O., Mack, D.E. et al. J Therm Spray Tech (2013) 22: 646. doi:10.1007/s11666-013-9889-8
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Abstract

Growing demands on thermal barrier coatings (TBCs) for gas turbines regarding their temperature and cyclic capabilities, corrosion resistance, and erosion performance have instigated the development of new materials and coating systems. Different pyrochlores, perovskites, doped yttria-stabilized zirconia, and hexaaluminates have been identified as promising candidates. However, processing these novel TBC materials by plasma spraying is often challenging. During the deposition process, stoichiometric changes, formation of undesired secondary phases or non-optimum amorphous contents, as well as detrimental microstructural effects can occur in particular. This article describes these difficulties and the development of process-related solutions by employing diagnostic tools.

Keywords

hexaaluminate particle diagnostics perovskite plasma spraying pyrochlore thermal barrier coating yttria-stabilized zirconia 

Copyright information

© ASM International 2013

Authors and Affiliations

  • Georg Mauer
    • 1
  • Maria Ophelia Jarligo
    • 1
  • Daniel Emil Mack
    • 1
  • Robert Vaßen
    • 1
  1. 1.Institut für Energie- und Klimaforschung (IEK-1)Forschungszentrum Jülich GmbHJülichGermany

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