Rod-like eutectic structure of arc-melted TiB2-TiCxN1-x composite

Eric Jianfeng Cheng, Hirokazu Katsui, Rong Tu, Takashi Goto

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

Abstract

TiB2-TiCxN1-x composites were synthesized by arc-melting mixtures of TiB2, TiC and TiN powders in a N2 atmosphere at 60kPa. TiB2-TiCxN1-x composites were obtained at TiN contents below 20mol%, whereas TiB formed in the composites at higher TiN contents. TiB2-TiCxN1-x composites with a nominal composition of 36TiB2-44TiC-20TiN (mol%) had a rod-like eutectic structure, where the TiCxN1-x single-crystal rods dispersed in the TiB2 single-crystal matrix. The crystal orientation relationship between the TiB2 matrix and the TiCxN1-x rods was TiB2 (0001)//TiCxN1-x (111). Vickers hardness (Hv) of the rod-like eutectic composite was 22.5GPa.

Original languageEnglish
Pages (from-to)2089-2094
Number of pages6
JournalJournal of the European Ceramic Society
Volume34
Issue number9
DOIs
Publication statusPublished - 2014 Jan 1

Keywords

  • Eutectic composite
  • Lamellar structure
  • Rod-like structure
  • Vickers hardness

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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