Method of forming particles comprising carbon and articles therefrom
View Patent ↗A method of growing carbonaceous particles comprises depositing carbon from a carbon source, onto a particle nucleus, the particle nucleus being a carbon-containing material, an inorganic material, or a combination comprising at least one of the foregoing, and the carbon source comprising a saturated or unsaturated compound of C 20 or less, the carbonaceous particles having a uniform particle size and particle size distribution. The method is useful for preparing polycrystalline diamond compacts (PDCs) by a high-pressure, high-temperature (HPHT) process.
1. A method of forming a polycrystalline diamond compact, the method comprising:
pyrolyzing a carbon source to deposit from the carbon source onto a plurality of particle nuclei to form a plurality of particles having a number-averaged particle size of greater than or equal to 125 nm and less than or equal to about 1,000 micrometers, the particle nuclei comprising at least one material selected from the group consisting of a carbon-containing material and an inorganic material, the carbon source comprising a saturated or unsaturated compound of C 20 or less; wherein the pyrolyzing is performed in the presence of a gas selected from the group consisting of hydrogen, an inert gas, and combinations thereof;
mixing the plurality of particles with a solvent to form a suspension comprising the particles of the plurality dispersed in the solvent;
removing the solvent to form a dried volume of particles including carbon from the saturated or unsaturated compound of C 20 or less; and
increasing a pressure and a temperature of the dried volume of particles to form interparticle bonds between adjacent particles of the plurality of particles.
2. The method of claim 1 , wherein the particle nuclei are derivatized, underivatized, or a combination of derivatized and underivatized, and wherein the particle nuclei comprise at least one of diamond, diamond-like carbon, carbon black, graphite, graphene, and nanotubes.
3. The method of claim 2 , wherein the particle nuclei comprise at least one material selected from the group consising of nanodiamond and microdiamond.
4. The method of claim 1 , wherein pyrolyzing a carbon source to deposit carbon from the carbon source onto a plurality of particle nuclei comprises forming particles having a number-averaged particle size of about 1 to about 1,000 micrometers.
5. The method of claim 1 , wherein the carbon source comprises a metallocene.
6. The method of claim 1 , wherein pyrolyzing a carbon source to deposit carbon from the carbon source onto a plurality of particle nuclei comprises forming at least one material selected from the group consisting of particles having a spherical shape, particles having a worm-like carbon structure, carbon nanofibers, carbon nano-coils, and carbon micro-coils.
7. The method of claim 1 , wherein pyrolyzing a carbon source to deposit carbon from the carbon source onto a plurality of particle nuclei comprises forming diamond.
8. The method of claim 1 , wherein increasing a pressure and a temperature of the dried volume of particles to form interparticle bonds between adjacent particles of the plurality of particles comprises increasing the pressure of the dried volume of particles to at least about 5.0 GPa and increasing the temperature of the dried volume of particles to at least about 1,000° C.
9. The method of claim 1 , wherein pyrolyzing a carbon source to deposit carbon from the carbon source onto a plurality of particle nuclei comprises forming particles having a monodisperse or polydisperse particle size distribution.
10. A method of forming a polycrystalline diamond compact, the method comprising:
pyrolyzing a carbon source to deposit carbon from the carbon source onto a plurality of particle nuclei to form a plurality of particles having a number-averaged particle size of greater than or equal to 125 nm and less than or equal to about 1,000 micrometers, the particle nuclei comprising at least one material selected from the group consisting of carbon nanotubes, inorganic nanotubes, and metallated nanotubes, Wherein the particle nuclei are derivatized, underivatized, or a combination of derivatized and underivatized, the carbon source comprising a saturated or unsaturated compound of C 20 or less, wherein the pyrolyzing is performed in the presence of a gas selected from the group consisting of hydrogen, an inert gas, and combinations thereof;
mixing the plurality of particles with a solvent to form a suspension comprising the particles of the plurality dispersed in the solvent;
removing the solvent to form a dried volume of particles including carbon from the saturated or unsaturated compound of C 20 or less; and
increasing a pressure and a temperature of the dried volume of particles to form interparticle bonds between adjacent particles of the plurality of particles.
11. The method of claim 10 , wherein increasing a pressure and a temperature of the dried volume of particles to form interparticle bonds between adjacent particles of the plurality of particles comprises increasing the pressure of the dried volume of particles to at least about 5.0 GPa and increasing the temperature of the dried volume of particles to at least about 1,000° C.
12. The method of claim 10 , wherein pyrolyzing a carbon source to deposit carbon from the carbon source onto a plurality of particle nuclei comprises forming particles having a monodisperse or polydisperse particle size distribution.
13. A method of forming a polycrystalline diamond compact, the method comprising:
pyrolyzing a carbon source to deposit carbon from the carbon source onto a plurality of particle nuclei to form a plurality of particles having a number-averaged particle size of greater than or equal to 125 nm and less than or equal to about 1,000 micrometers, the particle nuclei comprising at least one material selected from the group consisting of single- walled and multi-walled nanotubes, Wherein the particle nuclei are derivatized, underivatized, or a combination of derivatized and underivatized, the carbon source comprising a saturated or unsaturated compound of C 20 or less, Wherein the pyrolyzing is performed in the presence of a gas selected from the group consisting of hydrogen, an inert gas, and combinations thereof;
mixing the plurality of particles with a solvent to form a suspension comprising the particles of the plurality dispersed in the solvent;
removing the solvent to form a dried volume of particles including carbon from the saturated or unsaturated compound of C 20 or less; and
increasing a pressure and a temperature of the dried volume of particles to form interparticle bonds between adjacent particles of the plurality of particles.
14. The method of claim 13 , wherein increasing a pressure and a temperature of the dried volume of particles to form interparticle bonds between adjacent particles of the plurality of particles comprises increasing the pressure of the dried volume of particles to at least about 5.0 GPa and increasing the temperature of the dried volume of particles to at least about 1,000° C.
15. The method of claim 13 , wherein pyrolyzing a carbon source to deposit carbon from the carbon source onto a plurality of particle nuclei comprises forming particles having a monodisperse or polydisperse particle size distribution.