Chapter 48. Static Fatigue of TZP-Al2O3 Composite

  1. John B. Wachtman Jr.
  1. Satoshi Iio,
  2. Masakazu Watanabe and
  3. Yasushi Matsuo

Published Online: 28 MAR 2008

DOI: 10.1002/9780470310588.ch48

A Collection of Papers Presented at the 13th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 10, Issue 9/10

A Collection of Papers Presented at the 13th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 10, Issue 9/10

How to Cite

Iio, S., Watanabe, M. and Matsuo, Y. (1989) Static Fatigue of TZP-Al2O3 Composite, in A Collection of Papers Presented at the 13th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 10, Issue 9/10 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470310588.ch48

Author Information

  1. Research and Development Department NGK Spark Plug Co., Ltd. Komaki-shi, Aichi 485, Japan

Publication History

  1. Published Online: 28 MAR 2008
  2. Published Print: 1 JAN 1989

ISBN Information

Print ISBN: 9780470374870

Online ISBN: 9780470310588

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Keywords:

  • lithiu-alumina-silica;
  • metal seals;
  • secondary wn mass spectroscopy;
  • glass-ceramic;
  • thermal expansion

Summary

Static fatigue behavior of TZP-Al2O3 composite was investigated in three-point bending at various temperatures to clarify the effect of stress on the aging behavior. Fatigue resistance was minimal at around 300°C, where TZP materials are most prone to degradation by aging, despite the fact that the samples used in this study did not show the degradation by aging for 10 000 h at the same temperature range. Slow crack growth regions were observed on fracture surfaces of some specimens tested at around 300°C. More tetragonal to monoclinic (t-m) transformation was observed in slow crack growth region than in fast fracture region. It was found that the t-m transformation by aging was accelerated by stress, and slow crack growth was thought to be enhanced by the volume change during the t-m transformation.