Characterization of directionally solidified B4C-TiB 2 and B4C-SiC eutectic composites prepared by floating-zone method

Takaya Akashi, Itaru Gunjishima, Takashi Goto

Research output: Contribution to journalConference articlepeer-review

5 Citations (Scopus)

Abstract

B4C-TiB2 and B4C-SiC eutectic composites were prepared by a floating zone method to modify the properties of B 4C. The B4C-TiB2 composites consisted of B 4C matrix and rod-shaped TiB2 where the eutectic composition was 25 mol% TiB2. The c-axis of B4C matrix tilted ∼20° from the growth direction. Twin boundaries were observed in the B4C matrix being parallel to the growth direction and (101̄1) plane of B4C. The (101̄1) plane of B4C was parallel to the (0001) plane of TiB2. The B4C-SiC composite has a lamella structure with SiC and B4C layers, whose eutectic composition was 53 mol% SiC. The angle between c-axis of B 4C matrix and growth direction was about 20°. Twin boundaries were observed parallel to the growth direction and (111) plane of the SiC layer. The (101̄2) plane of B4C was parallel to the (311) plane of SiC.

Original languageEnglish
Pages (from-to)209-212
Number of pages4
JournalKey Engineering Materials
Volume247
Publication statusPublished - 2003 Jan 1
EventAdvanced Ceramics and Composites - Shanghai, China
Duration: 2002 Nov 192002 Nov 22

Keywords

  • Boron Carbide
  • Crystal Orientation
  • Eutectic Composite
  • Silicon Boride
  • Titanium Boride

ASJC Scopus subject areas

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

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