Intergranular phase of Si3N4 hot-pressed with 6% Y2O3

Celio A. Costa, Judith Todd Copley

Research output: Contribution to journalConference articlepeer-review


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.

Original languageEnglish (US)
Pages (from-to)523-530
Number of pages8
JournalCeramic Engineering and Science Proceedings
Issue number3
StatePublished - Dec 1 1998
EventProceedings of the 1998 22nd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A. Part 1 (of 2) - Cocoa Beach, FL, USA
Duration: Jan 20 1998Jan 24 1998

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry


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