Chapter 31. Hot Isostatic Pressing of Sintered Si3N4 Ceramics
- John B. Wachtman Jr
Published Online: 28 MAR 2008
Copyright © 1991 The American Ceramic Society, Inc.
Proceedings of the 15th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 12, Issue 7/8
How to Cite
Plucknett, K. P. and Lewis, M. H. (1991) Hot Isostatic Pressing of Sintered Si3N4 Ceramics, in Proceedings of the 15th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 12, Issue 7/8 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470313831.ch31
- Published Online: 28 MAR 2008
- Published Print: 1 JAN 1991
Print ISBN: 9780470375099
Online ISBN: 9780470313831
Pressureless sintered Si3N4 ceramics have been hot isostatically pressed (HIP'ed) in a nitrogen atmosphere. An increase in density was observed for all HIP'ed ceramics, although theoretical density was not achieved. The effects of HIP'ing upon bulk microstructure and pore morphology are discussed. Structural modification of the surface and subsurface microstructure occurred during HIP'ing; following reaction between the ceramic and pressurizing gas (N2) Room temperature strength remained essentially unaltered after HIP'ing; however, Weibull modulus was increased. Additionally, HIP'ing had minimal effect upon the bulk oxidation behavior of the ceramics examined.