Diamond sintered body and the method for producing the same
US4303442A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 24, 1979 |
| Grant date | Dec 1, 1981 |
| Priority date | — |
| Expiry date | Aug 24, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C2026/005
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention relates to a diamond sintered body having a high wear resistance and making it possible to obtain a processed surface of high dimensional precision and beautiful finish as a wear resisting tool blank for use particularly in a wire drawing die, shaving die and the like, as a tool blank for use in a cutting tool for a workpiece consisting of nonferrous metals, plastics, ceramic, etc., and as a cutting tool blank for use in a glass cutter, synthetic building material cutting blade, etc., and method for producing the same, wherein a mixture comprising a diamond powder below 1.mu. and a powder below 1.mu. of one or more than two kinds of carbides, nitrides and borides of IVa, Va and VIa group metals of the periodic table, and further a powder of iron group metals is placed between a plurality of cemented carbide plates and then subjected to hot press sintering at a high temperature and high pressure under which diamond is stable thereby enabling to obtain a diamond sintered body having high properties suitable for the aforesaid uses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.