EP 1715972 A1 20061102 - METHOD OF SINTERING BODY HAVING HIGH HARDNESS
Title (en)
METHOD OF SINTERING BODY HAVING HIGH HARDNESS
Title (de)
VERFAHREN ZUM SINTERN EINES EINE GROSSE HÄRTE AUFWEISENDEN KÖRPERS
Title (fr)
PROCEDE POUR FRITTER UN ELEMENT DE DURETE ELEVEE
Publication
Application
Priority
- KR 2005000079 W 20050111
- KR 20040002148 A 20040113
Abstract (en)
[origin: WO2005068113A1] Disclosed is a method of producing a sintered body with high hardness, in which a hard layer of polycrystalline diamond (PCD) is formed on an ultra-hard substrate, which comprises: a step of preparing a raw material powder for sintering, which comprises diamond powder, a step of positioning the raw material powder for sintering onto a WC/Co type ultra-hard substrate; and a step of forming a PCD layer having high hardness on said ultra-hard substrate by charging the ultra-hard substrate with the raw material powder for sintering into a crucible made of a sintered body comprised of: at least one material selected from a group consisting of catalyst transition metals from Period of 4-6 of Group 4A-6A of Periodic table of elements and carbides, nitrides and carbo-nitrides thereof and each solid solution thereof; and at least one binding material selected from Fe, Co and Ni, and then carrying out sintering under the conditions of high temperature and high pressure, where diamond is stable. According to the present invention, it becomes possible to prevent abnormal particle growth of diamond in a PCD layer of a sintered body having high hardness, without adding a powder of a binding material comprising additional materials for inhibiting particle growth, therefore, it is now possible to prepare a sintered body having high hardness, which has excellent machinability and processability.
IPC 8 full level
B22F 7/02 (2006.01); B01J 3/06 (2006.01); B22F 3/14 (2006.01); B22F 5/00 (2006.01)
CPC (source: EP KR)
A23B 4/031 (2013.01 - KR); B01J 3/062 (2013.01 - EP); B22F 3/14 (2013.01 - EP); B22F 5/007 (2013.01 - EP); B27J 1/003 (2013.01 - KR); B01J 2203/0605 (2013.01 - EP); B01J 2203/062 (2013.01 - EP); B01J 2203/063 (2013.01 - EP); B01J 2203/0645 (2013.01 - EP); B01J 2203/0655 (2013.01 - EP); B22F 2998/00 (2013.01 - EP)
C-Set (source: EP)
Citation (search report)
See references of WO 2005068113A1
Designated contracting state (EPC)
DE
DOCDB simple family (publication)
WO 2005068113 A1 20050728; EP 1715972 A1 20061102; KR 100568970 B1 20060407; KR 20050073988 A 20050718
DOCDB simple family (application)
KR 2005000079 W 20050111; EP 05721763 A 20050111; KR 20040002148 A 20040113