Chapter 36. Fracture Toughness and Fatigue Crack Propagation of Silicon Nitride with Two Different Microstructures

  1. John B. Wachtman Jr.
  1. James T. Beals and
  2. Isa Bar-On

Published Online: 26 MAR 2008

DOI: 10.1002/9780470313008.ch36

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

Beals, J. T. and Bar-On, I. (1990) Fracture Toughness and Fatigue Crack Propagation of Silicon Nitride with Two Different Microstructures, 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.ch36

Author Information

  1. Worcester Polytechnic Institute

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:

  • characteristic;
  • microstructure;
  • mechanical properties;
  • parameters;
  • deflection

Summary

Fracture and fatigue properties of silicon nitride with identical composition and different microstructure were measured. Fracture toughness was determined using indentation fracture toughness and the bridge indentation technique. Static and cyclic fatigue crack propagation rates were determined in 4-pt. bending. The crack propagation rates were significantly lower for the material with the higher fracture toughness.