Chapter 59. Intergranular Phase of Si3N4 Hot-Pressed with 6% Y2O3

  1. Don Bray
  1. CéLio A. Costa and
  2. Judith A. Todd

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294482.ch59

22nd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 19, Issue 3

22nd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 19, Issue 3

How to Cite

Costa, C. A. and Todd, J. A. (1988) Intergranular Phase of Si3N4 Hot-Pressed with 6% Y2O3, in 22nd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 19, Issue 3 (ed D. Bray), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294482.ch59

Author Information

  1. Illinois Institute of Technology, Chicago, IL 60616, USA Department of Mechanical, Materials and Aerospace Engineering

  1. Universidade Federal do Rio de Janeiro (COPPE/PEMM) Caixa Postal 68505, 21945-970 Rio de Janeiro, RJ, Brazil.

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1988

ISBN Information

Print ISBN: 9780470375587

Online ISBN: 9780470294482

SEARCH

Keywords:

  • monolithic;
  • crystalline;
  • electron;
  • parameter;
  • microscopy

Summary

Monolithic and composite Si3N4, hot-pressed with 6% Y2O3, were analyzed using X-ray diffraction and transmission electron microscopy (TEM). The results showed the materials to be composed of β-Si3N4 grains and an intergranular phase which was partially crystalline and partially amorphous. It was observed that the amount of intergranular crystalline phase decreased as whiskers were added to the material and the intergranular crystalline part had a crystallographic structure similar to those oxides in the yttrium-silicon-oxide-nitride family.