Preparation of directionally solidified B4C-TiB2-SiC ternary eutectic composites by a floating zone method and their properties

Wenjun Li, Rong Tu, Takashi Goto

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

Directionally solidified B4C-TiB2-SiC composites were prepared by a floating zone method using B4C, TiB2 and SiC as starting materials. The B4C-TiB2-SiC system was ternary eutectic whose eutectic composition was 51.2B4C-8.1TiB 2-40.7SiC (mol%). The ternary eutectic composite showed a lamellar microstructure where B4C(104), TiB2(100) and SiC(111) planes were perpendicular to the growth direction. The Vickers hardness of the B4C-TiB2-SiC ternary eutectic composite was 28 to 32 GPa. The electrical conductivity was 6 to 9 × 104 Sm-1, and the thermal conductivity was 35 to 45 WK-1 m-1 in the temperature range from 298 to 1100K.

Original languageEnglish
Pages (from-to)2067-2072
Number of pages6
JournalMaterials Transactions
Volume46
Issue number9
DOIs
Publication statusPublished - 2005 Sep

Keywords

  • BC-TiB-SiC
  • Electrical conductivity
  • Eutectic
  • Floating zone method
  • Hardness
  • Lamellar microstructure
  • Thermal conductivity

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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