Chapter 3. A Comparison of Reaction vs Conventionally Hot-Pressed Ceramic Composites

  1. John B. Wachtman Jr.
  1. C. P. Cameron,
  2. J. H. Enloe,
  3. L. E. Dolhert and
  4. R. W. Rice

Published Online: 26 MAR 2008

DOI: 10.1002/9780470313053.ch3

14th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 11, Issue 9/10

14th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 11, Issue 9/10

How to Cite

Cameron, C. P., Enloe, J. H., Dolhert, L. E. and Rice, R. W. (1990) A Comparison of Reaction vs Conventionally Hot-Pressed Ceramic Composites, in 14th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 11, Issue 9/10 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470313053.ch3

Author Information

  1. W. R. Grace and Co.-Conn. Columbia, MD 21044

Publication History

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

ISBN Information

Print ISBN: 9780470374931

Online ISBN: 9780470313053

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Keywords:

  • microstructures;
  • alumina;
  • stoichiometric;
  • microscopy;
  • parameters

Summary

Solid-state reactions were carried out simultaneously with hot-pressing to produce ceramic composited based on an α-alumina matrix with one or more of the following phases: TiB2, TiC, SiC, or B4C. Microstructures and physical properties, e.g., fracture strength, hardness, and Young's modulus, were compared to bodies obtained from conventionally hot-pressed materials of similar composition. While good densification and physical properties were obtained by reaction hot-pressing, e.g., Vickers hardnesses as high as 2 400 kg/mm2 for a TiB2-α-alumina composite and strengths exceeding 600 MPa in TiC-α-alumina composites, no generic advantages over conventional hot-pressing were obtained.