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

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, a...

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Bibliographic Details
Published in:Applied physics express 2015-07, Vol.8 (7), p.75101
Main Authors: Naragino, Hiroshi, Tominaga, Aki, Hanada, Kenji, Yoshitake, Tsuyoshi
Format: Article
Language:English
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Summary: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 15.0 nm 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.
ISSN:1882-0778
1882-0786
DOI:10.7567/APEX.8.075101