Hot Isostatic Processing of Shocked Si3N4 Powder

Shigeyuki Sōmiya, Masahiro Yoshimura, Shutaro Fujiwara, Ken‐Ichi ‐I Kondo, Akira Sawaoka, Takeo Haitori, Jun‐Ichi ‐I Mohri, Masatada Araki

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Abstract

To enhance the sinter ability of Si3N4, powders mixed with 0, 2, and 5 wt% Y2O3 were explosively shock‐treated. Compacts of these powders were encapsulated in 96% silica glass containers and isostatically hot‐pressed. The shocked Si3N4 with 5 wt% Y2O3 was pressed to a density of 3.09 g/cm3 (95.4% of theoretical) at 1400°C under 430 MPa for 3 h, whereas the unshocked material attained only 82.4% of theoretical density under the same hot isostatic pressing conditions.

Original languageEnglish
Pages (from-to)C‐51-C‐52
JournalJournal of the American Ceramic Society
Volume67
Issue number3
DOIs
Publication statusPublished - 1984 Mar

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All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

Cite this

Sōmiya, S., Yoshimura, M., Fujiwara, S., Kondo, KI. I., Sawaoka, A., Haitori, T., ... Araki, M. (1984). Hot Isostatic Processing of Shocked Si3N4 Powder. Journal of the American Ceramic Society, 67(3), C‐51-C‐52. https://doi.org/10.1111/j.1151-2916.1984.tb19755.x