多結晶ダイヤモンド複合物成形体エレメント、それを組み込む工具、及びそれを作製する方法

Japanese Patent JP2012506493

A

The invention relates to a PCD composite compact element comprising a PCD structure integrally bonded at an interface to a cemented carbide substrate; the PCD structure comprising coherently bonded diamond grains having a mean size no greater than 15 microns; the cemented carbide substrate comprising carbide particles dispersed in a metallic binder, the carbide particles comprising a carbide compound of a metal; wherein the ratio of the amount of metallic binder to the amount of the metal at points in the substrate deviates from a mean value by at most 20 percent of the mean value. The invention further relates to a method for making a PDC compact element comprising a PCD structure integrally bonded to a substrate formed of cemented carbide; the method including introducing a source of excess carbon to the substrate at a bonding surface of the substrate to form a carburised substrate; contacting an aggregated mass of diamond grains with the carburised substrate; and sintering the diamond grains in the presence of a solvent/catalyst material for diamond; wherein the mean size of the diamond grains in the aggregated mass is no greater than 30 microns.

Davis, Jeffrey John
Nzama, Mloniswa, Cyprian
Nylene, Roger William Nigel

JP2011532757A

March 15, 2012

October 21, 2009

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Element Six (Production) (Proprietary) Limited

B22F7/00; C22C1/05; C22C26/00; C22C29/08; E21B10/46

JP2005281759A	2005-10-13
JP2001293603A	2001-10-23
JPS465204A
JP2004512181A	2004-04-22

WO2007020518A1

2007-02-22

Asamura patent office
Hideto Asamura
Hajime Asamura
Yuichiro Asano
Katsunori Ando
Kameoka Mikio
Yoichiro Uemura
Makoto Tatsumi

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