Dense SiC containing strongly aligned plate-like grains by magnetic treatment

S. H. Lee, L. Feng, J. Yin, J. S. Lee, X. Zhu, T. S. Suzuki, Y. Sakka, H. Tanaka

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Dense SiC having strongly aligned plate-like grains was prepared by slip casting under strong magnetic field and subsequent densification using Al3BC3 additive. Irregular-shaped 6H-SiC powders in the green body were strongly aligned by the magnetic treatment. Subsequently, Al3BC3 additive induced the formation of aligned plate-like SiC grains during densification. The hardness of SiC could be tailored up to 11% by the strong alignment of the grains. Crack deflection was also strongly affected by the direction of the aligned plate-like grains. As a result, the length of the cracks which propagated parallel to the elongated grains was 18.6% shorter compared to that formed perpendicular to the grains.

Original languageEnglish
Pages (from-to)5079-5084
Number of pages6
JournalCeramics International
Volume41
Issue number3
DOIs
Publication statusPublished - 2015 Apr 1
Externally publishedYes

Keywords

  • A. Sintering
  • B. Microstructure-final
  • C. Mechanical properties
  • D. SiC Magnetic treatment

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

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