Diamond compacts and process for making same
US4874398A · kind A · utility
Inventor
Key dates
| Filing date | Jun 19, 1986 |
| Grant date | Oct 17, 1989 |
| Priority date | — |
| Expiry date | Jun 19, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/96
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for producing a diamond compact having a compressive strength of at least 10 kbars, the process being performed in the graphite stability field at a maximum pressure of 40 kbars at a temperature of between 1100.degree. C. and 1600.degree. C. for a time which permits plastic deformation of the diamond crystals giving face-to-face contacts there-between and a substantial or complete degree of chemical equilibration between the bonding agent and the diamond crystals. Bonding agents are selected from elements and alloys which produce a bond with diamond having a melting point above 1600.degree. C. and which inhibit the formation of free graphite in the compact.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.