Thermophysical properties of EB-PVD coatings and sintered ceramics of 4 mol% Y2O3-stabilized zirconia

Byung Koog Jang, Hideaki Matsubara

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

The specific heat, thermal diffusivities and thermal conductivities of electron beam physical vapor deposition (EB-PVD) coatings and sintered ceramics of 4 mol% Y2O3-stabilized zirconia (YSZ) have been determined in temperature range between room temperature and 1000 °C. EB-PVD coatings reveal porous columnar microstructure. The thermal conductivities and thermal diffusivities of both EB-PVD coatings and sintered ceramics decrease with increasing temperature from room temperature to 1000 °C. The specific heat increases gradually as the temperature increase up to about 600 °C and thereafter does not vary much. The thermal diffusivities and thermal conductivities of EB-PVD YSZ coatings were lower than those of sintered YSZ ceramics at given temperature.

Original languageEnglish
Pages (from-to)243-246
Number of pages4
JournalJournal of Alloys and Compounds
Volume419
Issue number1-2
DOIs
Publication statusPublished - 2006 Aug 10

Keywords

  • Electron beam physical vapor deposition
  • Nanopore
  • Thermal conductivity
  • Thermal diffusivity
  • Zirconia

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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