IP Library Granted Patent US 8,927,101
Granted Patent B2
US 8,927,101 · App. 12/560,923 · Granted Jan 6, 2015

Abrasive particles having a unique morphology

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Quick Facts
Patent No.
US 8,927,101
App. No.
12/560,923
Granted
Jan 6, 2015
Kind
B2
Abstract

An abrasive particle having an irregular surface, wherein the surface roughness of the particle is less than about 0.95. A method for producing abrasive particles having a unique surface morphology including providing a plurality of abrasive particles; providing a plurality of metal particles; mixing the abrasive particles and the metal particles to form a mixture; compressing the mixture to form a compressed mixture; heating the compressed mixture; and recovering modified abrasive particles.

Claims (32)

1. A monocrystalline diamond particle having an irregular surface, wherein the average surface roughness of said particle is less than about 0.8, said particle comprising one or more spikes, and one or more pits, the one or more spikes and pits being formed by a method comprising the steps of:

providing a plurality of unprocessed monocrystalline diamond particles;

providing a plurality of metal particles;

mixing said unprocessed particles and said metal particles to form a mixture;

compressing said mixture to form a compressed mixture;

heating said compressed mixture; and

recovering modified particles, each particle having said one or more spikes and pits.

2. The particle of claim 1 , wherein the average surface roughness of said particle is between about 0.50 and about 0.80.

3. The particle of claim 1 , wherein the sphericity of said particle is less than about 0.70.

4. The particle of claim 1 , wherein the sphericity of said particle is between about 0.25 to about 0.6.

5. The particle of claim 1 , wherein the surface area of said particle is greater than about 20 percent higher than unprocessed monocrystalline diamond having the same particle size distribution.

6. The particle of claim 1 , where the size of the particle is between about 0.1 to about 1000 microns.

7. The particle of claim 1 , wherein said particle comprises a metallic coating.

8. The particle of claim 1 , wherein the depth of the pits ranges in size from about 5% to about 70% of the longest length of the particle.

9. The particle of claim 1 , wherein the depth of the pits ranges in size from about 40% to about 60% of a longest length of the particle.

10. A monocrystalline diamond particle having an average sphericity of less than about 0.70 and an average surface roughness of less than about 0.70.

11. The particle of claim 10 , wherein the average sphericity of said particle is about 0.2 to about 0.5.

12. The particle of claim 10 , wherein the average sphericity of said particle is about 0.25 to 0.4.

13. A monocrystalline diamond particle having an irregular surface, wherein the average surface roughness of said particle is less than about 0.70, said particle comprising one or more spikes, and one or more pits, the one or more spikes and pits being formed by a method comprising the steps of:

providing a plurality of unprocessed monocrystalline diamond particles;

providing a plurality of metal particles;

mixing said unprocessed particles and said metal particles to form a mixture;

compressing said mixture to form a compressed mixture;

heating said compressed mixture; and

recovering modified particles, each particle having said one or more spikes and pits.

14. A monocrystalline diamond particle of claim 13 , wherein the average surface roughness of said particle is less than about 0.60.

15. A monocrystalline diamond particle having an irregular surface, wherein the average surface roughness of said particle is less than about 0.75, wherein said particle ranges in size from about 1 micron to about 50 microns.

16. The particle of claim 15 , wherein said average surface roughness is between about 0.50 to about 0.70.

17. The particle of claim 15 , wherein the sphericity of said particle is less than about 0.70.

18. The particle of claim 15 , wherein the surface area of said particle is greater than about 20 percent higher than unprocessed monocrystalline diamond particle having the same particle size distribution.

19. The particle of claim 15 , wherein said particle comprises one or more spikes.

20. The particle of claim 15 , wherein said particle comprises one or more pits and wherein the depth of the pits ranges in size from about 5% to about 70% of a longest length of the particle.

Assignments (6)
SECURITY INTEREST Recorded Aug 31, 2021
From: DIAMOND INNOVATIONS, INC.
To: UBS AG, STAMFORD BRANCH
Reel/Frame 057388/0971 →
2L PATENT SECURITY RELEASE AGREEMENT Recorded Aug 31, 2021
From: UBS AG, STAMFORD BRANCH
To: DIAMOND INNOVATIONS, INC.
Reel/Frame 057650/0602 →
1L PATENT SECURITY RELEASE AGREEMENT Recorded Aug 31, 2021
From: UBS AG, STAMFORD BRANCH
To: DIAMOND INNOVATIONS, INC.
Reel/Frame 057651/0040 →
FIRST LIEN PATENT SECURITY AGREEMENT Recorded Sep 4, 2019
From: DIAMOND INNOVATIONS, INC.
To: UBS AG, STAMFORD BRANCH
Reel/Frame 050272/0415 →
SECOND LIEN PATENT SECURITY AGREEMENT Recorded Sep 4, 2019
From: DIAMOND INNOVATIONS, INC.
To: UBS AG, STAMFORD BRANCH
Reel/Frame 050272/0472 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 17, 2009
From: DUMM, TIMOTHY F.; NG, KAN-YIN
To: DIAMOND INNOVATIONS, INC.
Reel/Frame 023243/0008 →