Single crystal CBN featuring micro-fracturing during grinding
View Patent ↗A superabrasive material and method of making the superabrasive material are provided. The superabrasive material may comprise a superabrasive crystal having an irregular surface. The superabrasive material further comprises a plurality of structure defects within the superabrasive crystal. The plurality of structure defects may cause micro-chipping when used as grinding materials.
1. A superabrasive material comprising:
a plurality of superabrasive crystals, at least 90% of the plurality of crystals having an irregular shape and surface and a layered or laminar structure;
a plurality of structure defects within each the plurality of superabrasive crystals, wherein the plurality of structure defects cause micro-chipping when used as grinding materials;
a d5 post-crushing particle size distribution less than 65% of d50 pre-crushing particle size; and
an ellipse ratio of about 1.25 to about 1.35.
2. The superabrasive material of claim 1 , wherein the plurality of superabrasive crystals are selected from a group of cubic boron nitride, diamond, and diamond composite materials.
3. The superabrasive material of claim 1 , wherein the plurality of structure defects include micro cracks, crystal dislocations, or flaws.
4. The superabrasive material of claim 1 , wherein the plurality of structure defects cause micro-chipping, micro-fracture when the superabrasive materials are used for grinding materials.
5. The superabrasive material of claim 1 , wherein the superabrasive material has toughness index from about 53 to about 62.
6. The superabrasive material of claim 1 , wherein the layered or laminar microstructure aligned substantially parallel to the irregular surface to enable wear or breaking off of layer or laminar microstructure following a layer or laminar structure pattern.
7. A superabrasive material, comprising:
a plurality of superabrasive crystals, at least 90% of the plurality of crystals having an irregular shape and outer surface, wherein each of the superabrasive crystals has a layered or laminar microstructure aligned substantially parallel to the irregular surface to enable wear or breaking off of layer or laminar microstructure following a layered or laminar structure pattern and an ellipse ratio about 1.25 to about 1.35.
8. The superabrasive material of claim 7 , wherein the superabrasive crystals are selected from a group of cubic boron nitride, diamond, and diamond composite materials.
9. The superabrasive material of claim 7 , wherein at least 70% of the superabrasive crystals have structure defects.
10. The superabrasive material of claim 9 , wherein the structure defects include micro cracks or crystal dislocations, or flaws.
11. The superabrasive material of claim 7 , wherein the superabrasive material has toughness index from about 53 to about 62.
12. The superabrasive material of claim 7 , wherein the superabrasive material d5 has post-crushing particle size distribution less than 65% of d50 pre-crushing particle size.
13. The superabrasive material of claim 7 , wherein at least 90% of the superabrasive crystals have structure defects.