Chapter 7. Transformation-Toughened Bulk Tetragonal Zirconia: I, Overview of Development and Properties

  1. William J. Smothers
  1. T. K. Gupta1 and
  2. C. A. Andersson2

Published Online: 26 MAR 2008

DOI: 10.1002/9780470320358.ch7

Proceedings of the 13th Automotive Materials Conference: Ceramic Engineering and Science Proceedings, Volume 7, Issue 9/10

Proceedings of the 13th Automotive Materials Conference: Ceramic Engineering and Science Proceedings, Volume 7, Issue 9/10

How to Cite

Gupta, T. K. and Andersson, C. A. (1986) Transformation-Toughened Bulk Tetragonal Zirconia: I, Overview of Development and Properties, in Proceedings of the 13th Automotive Materials Conference: Ceramic Engineering and Science Proceedings, Volume 7, Issue 9/10 (ed W. J. Smothers), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470320358.ch7

Author Information

  1. 1

    Alcoa Laboratories Alcoa Center, PA 15235

  2. 2

    Lanxide Corp. 1 Tralee Industrial Park Newark, DE 19711

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1986

ISBN Information

Print ISBN: 9780470374689

Online ISBN: 9780470320358

SEARCH

Keywords:

  • zirconia;
  • ofphase stability;
  • thermal conductivity;
  • oxygen wcancies;
  • martensitic phase transformation

Summary

This paper gives an overview of the single-phased bulk tetragonal zirconia from the standpoint of phase stability, mechanism of transformation, Ms temperature, grain size, and composition. The physics of this material at low temperatures is reviewed from the specific heat and thermal conductivity, both of which exhibit non-Debye features attributed to oxygen vacancies. Although the concentration of these vacancies is low in tetragonal zirconia, the electrical conductivity is found to be surprisingly high, close to that of cubic zirconia, and has been attributed to the low migration energy of oxygen vacancies.