Title:
CVD DIAMOND LAYER
Document Type and Number:
Japanese Patent JP2009039856
Kind Code:
A
Abstract:
To provide a CVD diamond layer, related to a diamond.
This CVD diamond layer used as an insert to an abrasive tool is characterized in that: (i) the layer has a concentration of at least 0.05 atom% and contains a boron dopant atom; and (ii) the average tensile rupture strength of at least 600 MPa generated by a nucleating phase in a tension state and the average tensile rupture strength of at least 300 MPa generated by a growing surface in a tension state measured by a three-point bending test for a sample of not larger than 18 mm in length, 2 mm in width and 1.4 mm in thickness.
Inventors:
COLLINS JOHN LLOYD
Application Number:
JP2008239523A
Publication Date:
February 26, 2009
Filing Date:
September 18, 2008
Export Citation:
Assignee:
DE BEERS IND DIAMOND
International Classes:
B23B27/14; B23B27/20; B23B51/00; B23C5/16; B23P15/28; C23C16/26; C23C16/27; C23C16/511; C30B29/04
Domestic Patent References:
| JPH10146703A | 1998-06-02 | |||
| JPH0679504A | 1994-03-22 | |||
| JPH04193406A | 1992-07-13 |
Attorney, Agent or Firm:
Hideto Asamura
Hajime Asamura
Yuichiro Asano
Katsunori Ando
Hajime Asamura
Yuichiro Asano
Katsunori Ando