Chapter 60. Superplastically Sinter-Forged Silicon Nitride
- Todd Jessen,
- Ersan Ustundag
Published Online: 28 MAR 2008
DOI: 10.1002/9780470294635.ch60
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
Kondo, N., Suzuki, Y. and Ohji, T. (2008) Superplastically Sinter-Forged Silicon Nitride, 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.ch60
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:
- superplastic sinter forging technique;
- superior mechanical;
- silicon nitride;
- isotropic silicon nitrides;
- anisotropic microstructure
Summary
Near-net shape forming of silicon nitride, processed by a superplastic sinter-forging (SPSF) technique, was demonstrated. Also, the microstructure and mechanical properties of silicon nitride, produced by the SPSF technique, were investigated. The obtained specimen exhibited fine and highly anisotropic microstructures, where rod-shaped Si3N4 grains with sub-micrometer size tended to be aligned perpendicular to the forging direction. Very hi h bending strength of 2108 MPa as well as high fracture toughness of 8.3 MPaS·m1/2 were achieved when a stress was applied perpendicularly to the pressing direction. These results indicates that SPSF is a promising technique, since sintering and shape forming are conducted concurrently, and fabricated specimen exhibits superior mechanical properties.