Fabrication of porous SiC ceramics having pores shaped with Si grain templates

Hisanori Yamane, Takayuki Shirai, Haruhiko Morito, Takahiro Yamada, Yasuhisa Hasegawa, Takuji Ikeda

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

SiC porous ceramics were prepared by heating mixtures of Si powder and carbon black at 900 °C for 24. h in Na vapor. The grains of the Si powder were not only the source of Si for SiC but also served as templates for the pores in the SiC porous ceramics. Angular-shaped pores with sizes of 2-10, 10-150 and 50-150 μm were formed by angular Si grains with sizes of ≤10, ≤50 and ≤150 μm, respectively. The porosity of the SiC porous ceramics was around 55-59%. Spherical pores were also formed when spherical Si grains were used. A bending strength of 14. MPa was measured for the SiC porous ceramics prepared with the Si grains (≤50 μm).

Original languageEnglish
Pages (from-to)409-413
Number of pages5
JournalJournal of the European Ceramic Society
Volume31
Issue number3
DOIs
Publication statusPublished - 2011 Mar 1

Keywords

  • B. Porosity
  • C. Strength
  • D. SiC

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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