La2O3 doped y2O3 stabilized ZrO2 TBC prepared by EB-PVD

Mineaki Matsumoto, Norio Yamaguchi, Hideaki Matsubara

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Effect of La2O3 addition on thermal conductivity and high temperature stability of YSZ coating produced by EB-PVD was investigated. La2O3 was selected as an additive because it had a significant effect on suppressing densification of YSZ. The developed coating showed extremely low thermal conductivity as well as high resistance to sintering. Microstructural observation revealed that the coating had fine feather-like subcolumns and nanopores, which contributed to limit thermal transport. These nanostructures were thought to be formed by suppressing densification during deposition.

Original languageEnglish
Pages (from-to)501-504
Number of pages4
JournalKey Engineering Materials
Volume317-318
Publication statusPublished - 2006 Jan 1

Keywords

  • EB-PVD
  • Lanthania
  • Sintering
  • Thermal barrier coatings
  • Thermal conductivity
  • Yttria stabilized zirconia

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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