Preparation of B4C-ZrB2-SiC ternary eutectic composites by arc melting and their properties

R. Tu, N. Li, Q. Z. Li, S. Zhang, Takashi Goto, L. M. Zhang

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

B4C-ZrB2-SiC composites were synthesised by arc melting in Ar atmosphere using B4C, ZrB2 and β-SiC powders as starting materials. The ternary eutectic composition of 40B4C-20ZrB2-40SiC (mol-%) was first identified and a lamellar eutectic texture was observed. SiC and ZrB2 grains about 1 μm in thickness were uniformly dispersed in B4C matrix of B4C-ZrB2-SiC eutectic composite. B4C (003) and ZrB2 (100) planes were perpendicular to the growth direction. The Vickers hardness of B4C-ZrB2-SiC ternary eutectic composite was 30-34 GPa. The fracture toughness of B4C-ZrB2-SiC composite increased with the decrease of B4C content and the rise of ZrB2 content.

Original languageEnglish
Pages (from-to)26-29
Number of pages4
JournalMaterials Research Innovations
Volume19
DOIs
Publication statusPublished - 2015 Dec 1

Keywords

  • Arc melting
  • BC-ZrB-SiC composites
  • Eutectic ceramic
  • Hardness
  • Microstructure

ASJC Scopus subject areas

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

Fingerprint

Dive into the research topics of 'Preparation of B<sub>4</sub>C-ZrB<sub>2</sub>-SiC ternary eutectic composites by arc melting and their properties'. Together they form a unique fingerprint.

Cite this