Effect of time on microstructure and hardness of βsiAlON-cubic boron nitride composites during spark plasma sintering

Mikinori Hotta, Takashi Goto

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

βSiAlON-cubic boron nitride (cBN) composites were consolidated by spark plasma sintering, and the effects of holding time and heating rate on the phase transformation of cBN and Vickers hardness were investigated. The cBN phase transformed into hexagonal BN (hBN) and the hardness decreased with increasing holding time. The phase transformation from cBN to hBN was retarded by increasing the heating rate, resulting in increased hardness.

Original languageEnglish
Pages (from-to)521-524
Number of pages4
JournalCeramics International
Volume37
Issue number2
DOIs
Publication statusPublished - 2011 Mar 1

Keywords

  • A. Spark plasma sintering
  • C. Hardness
  • D. Boron nitride
  • D. SiAlON

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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