Chapter 8. The Microstructural Design of a Mechanically Interlocking Ceramic Microstructure

  1. John B. Wachtman Jr.
  1. J. W. Laughner

Published Online: 26 MAR 2008

DOI: 10.1002/9780470313008.ch8

A Collection of Papers Presented at the 14th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 11, Issue 7/8

A Collection of Papers Presented at the 14th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 11, Issue 7/8

How to Cite

Laughner, J. W. (1990) The Microstructural Design of a Mechanically Interlocking Ceramic Microstructure, in A Collection of Papers Presented at the 14th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 11, Issue 7/8 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470313008.ch8

Author Information

  1. P.O. Box 51 Tyrone, NY 14887

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1990

ISBN Information

Print ISBN: 9780470374924

Online ISBN: 9780470313008

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Keywords:

  • microstructure;
  • characterized;
  • absorption;
  • ceramics;
  • energy-absorbing processes

Summary

A new microstructure is proposed which would result in higher toughnesses for single-composition and composite ceramic materials. The microstructure influences crack propagation by providing easier routes for crack growth. These routes are designed to result in cracks characterized by reentrant angles around shaped grains, resulting in a cracked but interlocked body, analogous to a three-dimensional jigsaw puzzle. Alternatively, the route may be around shaped grains in such a way as to leave behind specially chosen crack bridges. Either of these methods will greatly increase R-curve behavior and result in a much more reliable material.