Chapter 68. Preceramic-Modified Reaction-Bonded Silicon Nitride (PM-RBSN): Processing and Properties with Focus on Long-Term High-Temperature Stability

  1. Todd Jessen and
  2. Ersan Ustundag
  1. Gerhard Wötting1,
  2. Lothar Schönfelder2 and
  3. Andreas Herzog3

Published Online: 28 MAR 2008

DOI: 10.1002/9780470294635.ch68

24th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 21, Issue 4

24th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 21, Issue 4

How to Cite

Wötting, G., Schönfelder, L. and Herzog, A. (2000) Preceramic-Modified Reaction-Bonded Silicon Nitride (PM-RBSN): Processing and Properties with Focus on Long-Term High-Temperature Stability, in 24th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 21, Issue 4 (eds T. Jessen and E. Ustundag), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294635.ch68

Author Information

  1. 1

    CFI Ceramics for Industry GmbH&Co.KG Oeslauer Strasse 35 D-96472 Rödental

  2. 2

    BAYER AG D-47812 Krefeld-Uerdingen

  3. 3

    CFI Ceramics for Industry GmbH&Co.KG Oeslauer Strasse 35 D-96472 Rödental

Publication History

  1. Published Online: 28 MAR 2008
  2. Published Print: 1 JAN 2000

ISBN Information

Print ISBN: 9780470375693

Online ISBN: 9780470294635

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Keywords:

  • diminishing material;
  • reaction bonded silicon nitride;
  • fiber reinforced composites;
  • nitridation process;
  • starting compositions

Summary

By adding Si-organic compounds to the basic Si-powder for RBSN, a remarkable improvement of RBSN-properties can be achieved. During processing Si-organics pyrolyze to Si3N4, SiC and occasionally Si2N2O, leading to higher densities and strength-values from room-temperature up to about 1500°C.

As there is nearly no amorphous grain-boundary phase present, creep and oxidation resistance are impressive with only diminishing material degradation after long-term exposure at 1500°C in air up to 100 h. As shrinkage during processing is very low and maximum temperature can be kept below 1450°C, this material is predetermined as matrix for fiber-reinforced composites.