Thermal conductivity and thermal cycle life of La2O3 and HfO2 doped ZrO2-Y2O3 coatings produced by EB-PVD

Mineaki Matsumoto, Takeharu Kato, Norio Yamaguchi, Daisaku Yokoe, Hideaki Matsubara

Research output: Contribution to journalArticlepeer-review

35 Citations (Scopus)

Abstract

The effects of La2O3 and HfO2 addition on thermal conductivity and thermal cycle life of EB-PVD YSZ coatings were investigated. La2O3 and HfO2 were selected as additives, because they significantly suppress the sintering of YSZ. The developed coating showed low thermal conductivity as well as high resistance to sintering. Burner rig tests confirmed that the developed coating have a superior thermal insulating effect and have a longer life than that of a coating with conventional composition.

Original languageEnglish
Pages (from-to)2835-2840
Number of pages6
JournalSurface and Coatings Technology
Volume203
Issue number19
DOIs
Publication statusPublished - 2009 Jun 25

Keywords

  • EB-PVD
  • HfO
  • LaO
  • Precipitates
  • Sintering
  • Thermal barrier coatings
  • Thermal conductivity

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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