Chapter 9. Fracture Toughness of Advanced Ceramics at Room Temperature: A Vamas Round Robin

  1. John B. Wachtman Jr.
  1. George D. Quinn

Published Online: 28 MAR 2008

DOI: 10.1002/9780470314180.ch9

Proceedings of the 17th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 14, Issue 7/8

Proceedings of the 17th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 14, Issue 7/8

How to Cite

Quinn, G. D. (1993) Fracture Toughness of Advanced Ceramics at Room Temperature: A Vamas Round Robin, in Proceedings of the 17th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 14, Issue 7/8 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470314180.ch9

Author Information

  1. National Institute of Standards and Technology Gaithersburg, MD 20899

Publication History

  1. Published Online: 28 MAR 2008
  2. Published Print: 1 JAN 1993

ISBN Information

Print ISBN: 9780470375266

Online ISBN: 9780470314180

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Keywords:

  • alumina;
  • ceramics;
  • tetragonal;
  • crystalline;
  • phenomena

Summary

The Versailles Advanced Materials and Standards (VAMAS) round robin on fracture toughness used three test methods. Two materials were studied: a gas-pressure sintered silicon nitride and a zirconia toughened alumina. Consistent results were obtained with the single-edge precracked beam and indentation strength methods. Interpretation of composite's fracture toughness was complicated by R-curve and environmentally-assisted crack growth phenomena.