Chapter 24. Development of Lower Cost Si3N4

  1. John B. Wachtman Jr
  1. T. Quadir1,
  2. R. W. Rice1,
  3. J. C. Chakraverty2,
  4. J. A. Breindel2 and
  5. C. Cm Wu3

Published Online: 26 MAR 2008

DOI: 10.1002/9780470313848.ch24

Proceedings of the 15th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 12, Issue 9/10

Proceedings of the 15th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 12, Issue 9/10

How to Cite

Quadir, T., Rice, R. W., Chakraverty, J. C., Breindel, J. A. and Wu, C. C. (1991) Development of Lower Cost Si3N4, in Proceedings of the 15th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 12, Issue 9/10 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470313848.ch24

Author Information

  1. 1

    W.R. Grace & Co. Columbia, MD 21044

  2. 2

    Diamonite Products Shreve, OH 44676

  3. 3

    U.S. Naval Research Laboratory Washington, D.C. 20375

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1991

ISBN Information

Print ISBN: 9780470375105

Online ISBN: 9780470313848

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Keywords:

  • microstructure;
  • development;
  • materials;
  • centigrade;
  • photomicrographs

Summary

The high costs of Si1N4 powders are driven extensively by achieving low impurity, especially oxygen, levels which can limit high-temperature, but not necessarily room temperature, properties. High Si3N4 powder costs seriously limit lower temperature, e.g., wear, applications, which do not necessarily require such costly material. Therefore, a program was undertaken to develop significantly lower cost Si3N4. Densities, phase contents, microstructure, and room temperature mechanical properties are reported showing good promise of this development.