Chapter 25. Effects of Oxygen Non-Stoichiometry on the High Temperature Performance of a Yttria-Tetragonal Zirconia Polycrystal Material

  1. John B. Wachtman Jr
  1. Jeffrey J. Swab,
  2. Robert N. Katz and
  3. Caroline J. Starita

Published Online: 26 MAR 2008

DOI: 10.1002/9780470310502.ch25

12th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 9, Issue 9/10

12th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 9, Issue 9/10

How to Cite

Swab, J. J., Katz, R. N. and Starita, C. J. (1988) Effects of Oxygen Non-Stoichiometry on the High Temperature Performance of a Yttria-Tetragonal Zirconia Polycrystal Material, in 12th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 9, Issue 9/10 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470310502.ch25

Author Information

  1. U.S. Army Materials Technology Laboratory Watertown, MA 02172

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1988

ISBN Information

Print ISBN: 9780470374818

Online ISBN: 9780470310502

SEARCH

Keywords:

  • hot isostatic pressing (HIPing);
  • polycrystal;
  • zirconia;
  • stepped temperature stress rupture (STSR);
  • oxidation

Summary

The hot isostatic pressing (HIPing) of a yttria-tetragonal zirconia polycrystal (Y-TZP) powder yields a body that is slightly reduced. Stepped-temperature stress rupture tests revealed that a HIPed Y-TZP has anomalous time-dependent failure behavior through the temperature range of 800°-1200°C. However, this anomaly can effectively be eliminated and the stress rupture performance significantly improved by oxidizing the HIPed body at 1000°C before use.