Chapter 24. The Effect of a High Strength Electric Field on the Low Temperature Degradation of a Y-TZP Ceramic

  1. Waltraud M. Kriven and
  2. Hua-Tay Lin
  1. Zhenbo Zhao1,
  2. Cheng Liu2 and
  3. Derek O. Northwood1

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294826.ch24

27th Annual Cocoa Beach Conference on Advanced Ceramics and Composites: B: Ceramic Engineering and Science Proceedings, Volume 24, Issue 4

27th Annual Cocoa Beach Conference on Advanced Ceramics and Composites: B: Ceramic Engineering and Science Proceedings, Volume 24, Issue 4

How to Cite

Zhao, Z., Liu, C. and Northwood, D. O. (2003) The Effect of a High Strength Electric Field on the Low Temperature Degradation of a Y-TZP Ceramic, in 27th Annual Cocoa Beach Conference on Advanced Ceramics and Composites: B: Ceramic Engineering and Science Proceedings, Volume 24, Issue 4 (eds W. M. Kriven and H.-T. Lin), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294826.ch24

Author Information

  1. 1

    Mechanical, Automotive & Materials Engineering University of Windsor, Windsor, Ontario, Canada N9B 3P4

  2. 2

    Mechanical, Aerospace & Industrial Engineering Ryerson University, Toronto, Ontario, Canada, M5B 2K3

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2003

ISBN Information

Print ISBN: 9780470375846

Online ISBN: 9780470294826

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Keywords:

  • oxygen;
  • monoclinic phase;
  • temperature degradation;
  • vacancies;
  • nature of carbon

Summary

The role of anion (oxygen) vacancies on the low temperature degradation of Y-TZP and a carburized Y-TZP has been investigated under a high strength electric field. It is found that the stability of a Y-TZP, but not a carburized Y-TZP was decreased when a high strength electric field was applied. The volume fraction of monoclinic phase produced by the electric field increased in a parabolic rate law manner which shows that the transformation is controlled by a diffusion process. It is indirectly shown that the low temperature degradation of Y-TZP results from the diffusion and migration of oxygen vacancies. The effect of temperature at a constant electric field on the degradation shows that the transformation can be promoted only in a specific temperature range. The stronger stability of carburized Y-TZP can be attributed to the nature of carbon in the Y-TZP lattice, where it exists in interstitial sites as a atom, rather than an ion.