Chapter 4. Life Modeling of Atmospheric and Low Pressure Plasma-Sprayed Thermal-Barrier Coating

  1. William Smothers
  1. Robert A. Miller1,
  2. P. Argarwal2 and
  3. E. C. Duderstadt2

Published Online: 26 MAR 2008

DOI: 10.1002/9780470320228.ch4

Proceedings of the 8th Annual Conference on Composites and Advanced Ceramic Materials: Ceramic Engineering and Science Proceedings, Volume 5, 7/8

Proceedings of the 8th Annual Conference on Composites and Advanced Ceramic Materials: Ceramic Engineering and Science Proceedings, Volume 5, 7/8

How to Cite

Miller, R. A., Argarwal, P. and Duderstadt, E. C. (1984) Life Modeling of Atmospheric and Low Pressure Plasma-Sprayed Thermal-Barrier Coating, in Proceedings of the 8th Annual Conference on Composites and Advanced Ceramic Materials: Ceramic Engineering and Science Proceedings, Volume 5, 7/8 (ed W. Smothers), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470320228.ch4

Author Information

  1. 1

    NASA Lewis Research Center Cleveland, OH 44135

  2. 2

    General Electric Co., Aircraft Engine Group Cincinnati, OH 45215

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1984

ISBN Information

Print ISBN: 9780470374139

Online ISBN: 9780470320228

SEARCH

Keywords:

  • thermal-barrier coatings;
  • ceramics;
  • oxidation strains;
  • plasma-sprayed bond coats;
  • electric furnace

Summary

A previously developed oxidation-based life model has been used to analyze cycles-to-failure vs cycle-duration data for 3 thermal-barrier coating systems. The coating systems consist of atmospheric pressure plasma sprayed (APPS) ZrO28% y2O3 over either APPS Ni-14% Cr-14% Al-0.1% Zr, APPS Ni-16% Cr-6% Al-0.3% Yor low pressure plasma sprayed (LPPS) Ni-14% Cr-14% Al-0.1% Zr. Specimens were tested at 1100°C for heating cycle lengths of 1 6, and 20 h. The experimental results support the concept that an oxidation-based model may be used to describe thermal-barrier coating lives.