Title:
SUPER-HARD COMPOSITE MATERIAL AND METHOD FOR PRODUCING THE SAME
Document Type and Number:
Japanese Patent JP2011241464
Kind Code:
A
Abstract:
To provide a diamond-containing super-hard composite material which has a sufficiently high density and uniform structure and is produced without using an ultra-high pressure vessel.
The super-hard composite material having a relative density of ≥85% is obtained by mixing hard powder of a carbide, a nitride or the like, 0-10 wt.% of an iron group metal, and diamond particles having an average particle diameter of 10-1,000 μm, and then sintering the resulting mixture by electrically heating the mixture at a heating speed of 100-10,000 °C/min in the temperature range of ≥900°C and keeping temperature for <30 s at a temperature not higher than 1,900°C, under a pressure within the range of 0-200 MPa.
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Inventors:
GRASSO SALVATORE
HU CHUNFENG
SAKKA YOSHIO
MAIZZA GIOVANNI
HU CHUNFENG
SAKKA YOSHIO
MAIZZA GIOVANNI
Application Number:
JP2010116823A
Publication Date:
December 01, 2011
Filing Date:
May 21, 2010
Export Citation:
Assignee:
NAT INST FOR MATERIALS SCIENCE
International Classes:
C22C26/00; B22F3/14; B22F7/00; C04B35/56
Domestic Patent References:
| JPH09194978A | 1997-07-29 | |||
| JP2000144298A | 2000-05-26 | |||
| JPH10310839A | 1998-11-24 |
Foreign References:
| WO2006080302A1 | 2006-08-03 | |||
| WO2010029518A1 | 2010-03-18 |