Methods of fabricating polycrystalline diamond, and cutting elements and earth-boring tools comprising polycrystalline diamond
AssigneeBaker Hughes Incorporated
InventorsAnthony A. DiGiovanni, Soma Chakraborty
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Abstract
Methods of fabricating polycrystalline diamond include functionalizing surfaces of carbon-free nanoparticles with one or more functional groups, combining the functionalized nanoparticles with diamond nanoparticles and diamond grit to form a particle mixture, and subjecting the particle mixture to high pressure and high temperature (HPHT) conditions to form inter-granular bonds between the diamond nanoparticles and the diamond grit. Cutting elements for use in an earth-boring tool includes a polycrystalline diamond material formed by such processes. Earth-boring tools include such cutting elements.
Claims17
A method of fabricating polycrystalline diamond, comprising:
- functionalizing surfaces of carbon-free nanoparticles comprising a ceramic material with one or more functional groups;
- combining the functionalized nanoparticles with diamond nanoparticles and diamond grit to form a particle mixture;
- and
- subjecting the particle mixture to high pressure and high temperature (HPHT) conditions to form inter-granular bonds between the diamond nanoparticles and the diamond grit.
A method of fabricating polycrystalline diamond, comprising:
- functionalizing surfaces of carbon-free nanoparticles with one or more functional groups;
- combining the functionalized nanoparticles with diamond nanoparticles and diamond grit to form a particle mixture, the combining comprising:
- suspending the functionalized nanoparticles and the diamond nanoparticles in a liquid to form a suspension;
- drying the suspension to form a powder product;
- and
- mixing the powder product with the diamond grit to form the particle mixture;
- and
- subjecting the particle mixture to high pressure and high temperature (HPHT) conditions to form inter-granular bonds between the diamond nanoparticles and the diamond grit.
A cutting element for use in an earth-boring tool, the cutting element comprising a polycrystalline diamond material formed by a method comprising:
- functionalizing surfaces of carbon-free nanoparticles comprising a ceramic material with one or more functional groups;
- combining the functionalized nanoparticles with diamond nanoparticles and diamond grit to form a particle mixture;
- and
- subjecting the particle mixture to high pressure and high temperature (HPHT) conditions to form inter-granular bonds between the diamond nanoparticles and the diamond grit.
An earth-boring tool comprising a cutting element, the cutting element comprising a polycrystalline diamond material formed by a method comprising:
- functionalizing surfaces of carbon-free nanoparticles comprising a ceramic material with one or more functional groups;
- combining the functionalized nanoparticles with diamond nanoparticles and diamond grit to form a particle mixture;
- and
- subjecting the particle mixture to high pressure and high temperature (HPHT) conditions to form inter-granular bonds between the diamond nanoparticles and the diamond grit.
Dependencies are inferred from the claim text.