6. Thermal Properties of Nanoporous YSZ Coatings Fabricated by EB-PVD

  1. Dongming Zhu,
  2. Uwe Schulz,
  3. Andrew Wereszczak and
  4. Edgar Lara-Curzio
  1. Byung-Koog Jang,
  2. Norio Yamaguchi and
  3. Hideaki Matsubara

Published Online: 26 MAR 2008

DOI: 10.1002/9780470291320.ch6

Advanced Ceramic Coatings and Interfaces: Ceramic Engineering and Science Proceedings, Volume 27, Issue 3

Advanced Ceramic Coatings and Interfaces: Ceramic Engineering and Science Proceedings, Volume 27, Issue 3

How to Cite

Jang, B.-K., Yamaguchi, N. and Matsubara, H. (2006) Thermal Properties of Nanoporous YSZ Coatings Fabricated by EB-PVD, in Advanced Ceramic Coatings and Interfaces: Ceramic Engineering and Science Proceedings, Volume 27, Issue 3 (eds D. Zhu, U. Schulz, A. Wereszczak and E. Lara-Curzio), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470291320.ch6

Author Information

  1. Materials Research and Development Laboratory, Japan Fine Ceramics Center (JFCC) 2–4–1 Mutsuno, Atsuta-ku, Nagoya, 456–8587, Japan

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2006

ISBN Information

Print ISBN: 9780470080535

Online ISBN: 9780470291320

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Keywords:

  • EB-PVD;
  • TBCs;
  • thermal conductivity;
  • temperature gradient;
  • explanation on the decrease of thermal conductivity

Summary

This study investigates the specific heat, thermal diffusivity and thermal conductivity of ZrO2-4mol% Y2O3 coating layers fabricated by electron beam physical vapor deposition (EB-PVD) in the temperature range between room temperature to 1000°C. The laser flash method and differential scanning calorimeter are used to measure the thermal diffusivity and specific heat of the coated samples, respectively. EB-PVD coatings reveal the porous columnar microstructure. Coatings are found to contain nano sized pores as well as micron sized pores. The thermal conductivities and thermal diffusivities of EB-PVD coatings decreased with increasing measuring temperature.