Spark plasma sintering of SiC-coated large-size diamond powder

Mettaya Kitiwan, Hirokazu Katsui, Takashi Goto

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

A large-size (25 μm in diameter) diamond powder was coated with a SiC layer by rotary chemical vapor deposition. The SiC-coated diamond powder was consolidated with a SiO2 additive by spark plasma sintering (SPS) under a moderate pressure of 130 MPa at 1673-1973 K for 300 s. The relative density of the diamond body with 35 wt% SiO2 using the SiC-coated diamond powder was in the range 98-99% while that of the uncoated diamond powder was in the range 89-94%. The highest Vickers hardness of the SiC-coated diamond bodies was 36 GPa at 4.9 N.

Original languageEnglish
Pages (from-to)11453-11456
Number of pages4
JournalMaterials Today: Proceedings
Volume4
Issue number11
DOIs
Publication statusPublished - 2017

Keywords

  • Chemical vapor deposition
  • Diamond
  • Silica
  • Silicon carbide
  • Spark plasma sintering

ASJC Scopus subject areas

  • Materials Science(all)

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