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

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


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
Issue number3
Publication statusPublished - 1984 Mar

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry


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