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US 6,783,745 B1Granted
Fullene based sintered carbon materials
AssigneeDiamond Materials, Inc.
InventorsOleg A. Voronov, Gary S. Tompa
Life of this patent
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AssigneeDiamond Materials, Inc.
InventorsOleg A. Voronov, Gary S. Tompa
Estimating the term…
A new class of carbon materials and their synthesis. The new carbon materials are formed by high pressure and high temperature processing of fullerene based carbon powder. The new carbon materials are harder than graphite and can be harder than steel (what the starting fullerenes are single wall nanotubes) or almost as hard as diamond (when the starting fullerened arm C60 buckyballs). The physical attributes of the materials can also be controlled by the pressing and heating parameters. These new carbon materials are conductive like graphite and unlike diamond which is an insulator. The materials can be formed by powder metallurgy techniques into any shape (cylinders, balls, tubes, rods, cones, foils, fibers or others). The new materials can also be readily doped, converted to diamond, formed within a porous composite or converted to diamond within the porous composite.
A hard carbon material having a density greater than 2.3 g/cm3 and a hardness from 1.0 Gpa to 50 Gpa formed by the process of:
A process for forming a high density sintered conductive carbon material, having a hardness from 1.0 Gpa to 50 Gpa, comprising the steps of:
A conductive hard, high density carbon material comprising at least 99.9% by weight of single walled nanotubes subjected to heat, temperature and pressure sufficient to provide a hardness to the material of at least 1.0 Gpa and less than 50 Gpa with a resistivity of less than 10 ohms-cm and a density above 2.3 g/cm3.
A process for forming a high density sintered conductive carbon material, having a hardness from 1.0 Gpa to 50 Gpa, comprising the steps of:
A process for forming a high density sintered conductive carbon material, having a hardness from 1.0 Gpa to 50 Gpa, comprising the steps of:
A process for forming a high density sintered conductive carbon material, having a hardness from 1.0 Gpa to 50 Gpa, comprising the steps of:
Dependencies are inferred from the claim text.