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Plasma-sprayed thermal barrier coatings with segmentation cracks

  • H. Guo*
  • , R. Yao
  • , L. Zhou
  • *Corresponding author for this work
  • Beihang University

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

Abstract

Plasma-sprayed thermal barrier coatings (TBCs) have been widely used on stationary components in turbine engines. The thermal shock resistance of such coatings is usually limited by their typical lamellar structure. In this work, a segmented structure was induced in the plasma-sprayed yttria stabilized zirconia (YSZ) coatings by using a 'hot' spraying condition. The thermophysical properties, mechanical properties and thermal cycling behaviors and associated failure mechanism of the segmented TBCs were addressed. The segmented TBCs exhibited very promising potential in improving the thermal cycling lifetime as compared to traditional non-segmented TBCs.

Original languageEnglish
Title of host publicationThermal Barrier Coatings
PublisherElsevier Ltd
Pages161-174
Number of pages14
ISBN (Print)9781845696580
DOIs
StatePublished - Jan 2011

Keywords

  • Plasma spray
  • Segmentation cracks
  • Thermal barrier coatings (TBCs)
  • Thermal cycling
  • Thermophysical property

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