Chapter 43. The Hardness and Toughness of Hiped Silicon Nitride

  1. John B. Wachtman Jr.
  1. R. Bemche1,
  2. R. T. Holt1,
  3. S. N. Kuma2 and
  4. T. M. MaCcagno3

Published Online: 26 MAR 2008

DOI: 10.1002/9780470313978.ch43

Proceedings of the 16th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 13, Issue 9/10

Proceedings of the 16th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 13, Issue 9/10

How to Cite

Bemche, R., Holt, R. T., Kuma, S. N. and MaCcagno, T. M. (1994) The Hardness and Toughness of Hiped Silicon Nitride, in Proceedings of the 16th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 13, Issue 9/10 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470313978.ch43

Author Information

  1. 1

    Structures and Materials Laboratory, Institute for Aerospace Research, National Research Council, Ottawa, ON, Canada K1A 0R6

  2. 2

    Ceramics Kingston Céramiques Inc., Kingston, ON, Canada K7L 4X1

  3. 3

    Dept. of Metallurgical Eng., McGill University, Montréal, PQ, Canada H3A 2A7

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1994

ISBN Information

Print ISBN: 9780470375198

Online ISBN: 9780470313978

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Keywords:

  • rationalized;
  • displacement;
  • structural integrity;
  • fractographic;
  • fracture stress

Summary

Silicon nitride with and without additives has been produced by hot isostatic pressing under different conditions. The HIP cycle parameters and grade of powder used have been found to affect the density, the hardness and the fracture toughness of the material produced. Sintering aids, on the other hand, have been found to affect the fracture toughness only. Materials HIPed with additives displayed a higher fracture toughness than materials HIPed without additives.