Chapter 68. Preceramic-Modified Reaction-Bonded Silicon Nitride (PM-RBSN): Processing and Properties with Focus on Long-Term High-Temperature Stability
- Todd Jessen,
- Ersan Ustundag
Published Online: 28 MAR 2008
DOI: 10.1002/9780470294635.ch68
Copyright © 2000 The American Ceramic Society
Book Title
24th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 21, Issue 4
Additional Information
How to Cite
Wötting, G., Schönfelder, L. and Herzog, A. (2008) 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
Publication History
- Published Online: 28 MAR 2008
- Published Print: 1 JAN 2000
Book Series:
ISBN Information
Print ISBN: 9780470375693
Online ISBN: 9780470294635
- Summary
- Chapter
- References
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.