Title:
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、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
Document Type and Number:
Japanese Patent JP6863076
Kind Code:
B2
Abstract:
To provide a polycrystalline diamond having high abrasion resistance which can form a protection film for surface protection.SOLUTION: A polycrystalline diamond is composed of a plurality of crystal grains with a diamond single phase as a basic composition, and contains boron, a boron compound, hydrogen, and oxygen, 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 boron compound, the hydrogen and the oxygen are present in the crystal grains as an isolated substitutional type or an intrusion type. The boron compound contains a boron compound containing oxygen. 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
Inventors:
Kazuhiro Ikeda
Katsuko Yamamoto
Hitoshi Kakutani
Katsuko Yamamoto
Hitoshi Kakutani
Application Number:
JP2017102592A
Publication Date:
April 21, 2021
Filing Date:
May 24, 2017
Export Citation:
Assignee:
Sumitomo Electric Industries, Ltd.
International Classes:
C01B32/26; B01J3/06; B21C3/02; B23B27/14; B23B27/20; B23C5/16; B24B53/12; B28D1/24; B28D5/00
Domestic Patent References:
| JP2013028500A | ||||
| JP2012066979A | ||||
| JP3197677A |
Foreign References:
| WO2004104272A1 |
Attorney, Agent or Firm:
Fukami patent office