FIELD: chemistry.
SUBSTANCE: nanoscale mono- or multilayer graphene-containing material is sintered for about 5 minutes in the absence of a transition metal catalyst at a pressure and temperature of, at least, 45 kbar and 700°C, respectively. Alternatively, the said material is mixed with diamond seeding in an amount of not less than 0.01 wt % of the mixture before sintering. Graphene has a ratio of sizes from 500 to 2000. The resulting compacts of polycrystalline diamond and the cutting element comprise polycrystalline superabrasive particles, for example, diamond.
EFFECT: invention avoids the harmful effect of the catalyst on the mechanical and abrasive properties of compacts and cutting tools.
24 cl, 3 tbl, 7 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| ULTRAHARD DIAMOND COMPOSITES | 2008 |
|
RU2463372C2 |
| ABRASIVE COMPACT FROM POLYCRYSTALLINE DIAMOND | 2007 |
|
RU2466200C2 |
| METHOD OF PREPARING MODIFIED ABRASIVE COMPACT | 2006 |
|
RU2418673C2 |
| FINE-GRAINED POLYCRYSTALLINE ABRASIVE MATERIAL | 2006 |
|
RU2433908C2 |
| FORMING OF CUTTING ELEMENTS OF POLYCRYSTALLINE DIAMOND, CUTTING ELEMENTS THUS MADE AND DRILL BIT EQUIPPED WITH SUCH CUTTING ELEMENTS | 2010 |
|
RU2539639C2 |
| INSERT FOR CRUSHING TOOL, METHOD OF ITS PRODUCTION AND TOOL WITH SAID INSERT | 2009 |
|
RU2532932C2 |
| ABRASIVE TOOL | 2007 |
|
RU2447985C2 |
| ABRASIVE COMPACTS | 2007 |
|
RU2453623C2 |
| SUPERABRASIVE MATERIAL WITH PROTECTIVE ADHESIVE COATING AND METHOD FOR PRODUCING SAID COATING | 2014 |
|
RU2666390C2 |
| METHOD FOR PREPARING SEMICRYSTALLINE DIAMOND MATERIAL | 0 |
|
SU549935A1 |
