Texturing of Si3N4 ceramics via strong magnetic field alignment

Xinwen Zhu, Tohru S. Suzuki, Tetsuo Uchikoshi, Yoshio Sakka

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

This paper reports the texture development in Si3N4 by strong magnetic field alignment (SMFA), using slip casting of α-Si 3N4 raw powder (SN-E10) and pressureless sintering. The texture of β-Si3N4 in the green and sintered bodies was characterized by X-ray diffraction analysis (XRD) and scanning electron microscopy (SEM). The a, b-axis and c-axis aligned β-Si3N 4 has been obtained by the static and rotating magnetic field of 12 T, respectively. The β-seed addition and prolonged sintering both enhance the texture, but the former is more efficient. This work suggests an efficient SMFA strategy of producing highly textured β-Si3N4, particularly the unidirectionally c-axis aligned β-Si3N 4 by seeding the α-raw powder using the less-agglomerated β-phase particles.

Original languageEnglish
Pages (from-to)871-874
Number of pages4
JournalKey Engineering Materials
Volume368-372 PART 1
DOIs
Publication statusPublished - 2008 Jan 1
Externally publishedYes

Keywords

  • Ceramics
  • Seeding
  • Silicon nitride
  • Slip casting
  • Strong magnetic field
  • Texture

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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