Chapter 5. The Preparation, Structure, and Properties of Commercial Sialon Ceramic Materials

  1. William Smothers
  1. R. J. Lumby

Published Online: 26 MAR 2008

DOI: 10.1002/9780470318140.ch5

A Collection of Papers Presented at the 1981 New England Section Topical Meeting on Nonoxide Ceramics: Ceramic Engineering and Science Proceedings, Volume 3, No. 1/2

A Collection of Papers Presented at the 1981 New England Section Topical Meeting on Nonoxide Ceramics: Ceramic Engineering and Science Proceedings, Volume 3, No. 1/2

How to Cite

Lumby, R. J. (2008) The Preparation, Structure, and Properties of Commercial Sialon Ceramic Materials, in A Collection of Papers Presented at the 1981 New England Section Topical Meeting on Nonoxide Ceramics: Ceramic Engineering and Science Proceedings, Volume 3, No. 1/2 (ed W. Smothers), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470318140.ch5

Author Information

  1. Lucas Syalon Limited, Shirley, Solihull, U.K.

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1982

ISBN Information

Print ISBN: 9780470373934

Online ISBN: 9780470318140

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Keywords:

  • polytype;
  • matrix;
  • engineering;
  • aluminum;
  • intergranular

Summary

The effects of aluminum and oxygen substitution in beta-silicon nitride are discussed. The addition of aluminum and nitrogen to a silica-containing powder aids and controls sinterability while controlling the glass phase, and hence high-temperature properties. This method allows a wide variety of starting Si3N4 powders to be used though large differences in basic chemistry may exist. The solution of Al and O in beta leads to the elimination of slow crack growth. The use of the chemically stable AIN polytype phases allows a wide range of shaping techniques to be used without sacrificing the control of Syalon* chemistry This allows component fabrication by die pressing extrusion and injection molding with controlled structure and properties.