Synthesis method for ultrananocrystalline diamond in powder employing a coaxial arc plasma gun

Hiroshi Naragino, Aki Tominaga, Kenji Hanada, Tsuyoshi Yoshitake

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

A new method that enables us to synthesize ultrananocrystalline diamond (UNCD) in powder is proposed. Highly energetic carbon species ejected from a graphite cathode of a coaxial arc plasma gun were provided on a quartz plate at a high density by repeated arc discharge in a compact vacuum chamber, and resultant films automatically peeled from the plate were aggregated and powdered. The grain size was easily controlled from 2.4 to 15.0nm by changing the arc discharge energy. It was experimentally demonstrated that the proposed method is a new and promising method that enables us to synthesize UNCD in powder easily and controllably.

Original languageEnglish
Article number075101
JournalApplied Physics Express
Volume8
Issue number7
DOIs
Publication statusPublished - Jul 1 2015

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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