Title:
触媒物質を枯渇させた表面を有する多結晶ダイヤモンド
Document Type and Number:
Japanese Patent JP4954429
Kind Code:
B2
Abstract:
Disclosed is a polycrystalline diamond or diamond-like element with greatly improved wear resistance without loss of impact strength. These elements are formed with a binder-catalyzing material in a high-temperature, high-pressure (HTHP) process. The PCD element has a body with a plurality of bonded diamond or diamond-like crystals forming a continuous diamond matrix that has a diamond volume density greater than 85 %. Interstices among the diamond crystals form a continuous interstitial matrix containing a catalyzing material. The diamond matrix table is formed and integrally bonded with a metallic substrate containing the catalyzing material during the HTHP process. The diamond matrix body has a working surface, where a portion of the interstitial matrix in the body adjacent to the working surface is substantially free of the catalyzing material, and the remaining interstitial matrix contains the catalyzing material. Typically, less than about 70 % of the body of the diamond matrix table is free of the catalyzing material.
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Inventors:
Nigel, Dennis, Griffin
Peter, Raymond, Hughes
Peter, Raymond, Hughes
Application Number:
JP2002528619A
Publication Date:
June 13, 2012
Filing Date:
June 25, 2001
Export Citation:
Assignee:
CAMCO INTERNATIONAL (UK) LIMITED
International Classes:
B23B27/14; B22F7/00; B22F7/06; B23B27/20; C04B35/52; C04B37/02; C04B41/45; C04B41/53; C04B41/81; C04B41/91; E21B10/00; E21B10/42; E21B10/43; E21B10/56; E21B10/567; E21B10/573; E21B10/60
Domestic Patent References:
| JP5044036A | ||||
| JP7004437A |
Foreign References:
| WO2000028106A1 | ||||
| WO2002024601A1 | ||||
| US4224380 | ||||
| US6248447 |
Attorney, Agent or Firm:
Kenji Yoshitake
Yukitaka Nakamura
Konno Akio
Noritaka Yokota
Masaharu Takamura
Yukitaka Nakamura
Konno Akio
Noritaka Yokota
Masaharu Takamura