多結晶ダイヤモンドおよびその製造方法、スクライブツール、スクライブホイール、ドレッサー、回転工具、ウォータージェット用オリフィス、伸線ダイス、切削工具、電極ならびに多結晶ダイヤモンドを用いた加工方法

Title:

Document Type and Number:

Japanese Patent JP6962004

Kind Code:

B2

Abstract:

To provide a polycrystalline diamond that is coated with a water-insoluble protection film, and can suppress tribo-plasma.SOLUTION: A polycrystalline diamond is composed of a plurality of crystal grains with a diamond single phase as a basic composition, and contains boron, nitrogen, and a silicon compound, with the balance being carbon and trace impurities. The boron is dispersed in the crystal grains at an atom level, and 90 atom% or more thereof is present as an isolated substitutional type. The nitrogen and the silicon compound are present in the crystal grains as an isolated substitutional type or an intrusion type. The silicon compound is at least one selected from the group consisting of silicon oxide, silicon nitride and silicon carbide. The crystal grains have a particle size of 500 nm or less, and a surface of the polycrystalline diamond is coated with a protection film.SELECTED DRAWING: None

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Inventors:

Kazuhiro Ikeda
Katsuko Yamamoto
Hitoshi Kakutani

Application Number:

JP2017102595A

Publication Date:

November 05, 2021

Filing Date:

May 24, 2017

Export Citation:

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Assignee:

Sumitomo Electric Industries, Ltd.

International Classes:

C01B32/25; B01J3/06; B21C3/02; B23B27/14; B23B27/20; B24B53/12; B26F3/00; B28D1/24; B28D5/00; C01B32/205; C01B32/26

Domestic Patent References:

JP2015030646A
JP7299467A
JP2013028500A
JP2013028498A

Foreign References:

WO2018101347A1

Attorney, Agent or Firm:

Fukami patent office

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