Patent ID: 11946320
Assignee: US SYNTHETIC CORPORATION
Field: Materials, metallurgy (Chemistry)
Classification: CPC E  B  C | IPC B  C  E

Claim 13:
14. A method of fabricating a polycrystalline diamond element, the method comprising:
placing diamond particles in diamond particulate volume into a pressure transmitting medium, the diamond particulate volume comprising:
a first volume of the diamond particles including a material comprising a group 13 element; and
a second volume of the diamond particles having a lower concentration of the material comprising the group 13 element than the first volume of the diamond particles;

positioning the diamond particles in the diamond particulate volume in the pressure transmitting medium adjacent to a substrate;
positioning the first volume of the diamond particles between the second volume of diamond particles and the substrate;
enclosing the diamond particles in the diamond particulate volume in the pressure transmitting medium to define a cell assembly;
subjecting the cell assembly to a high-pressure/high-temperature process to define a polycrystalline diamond table; and
leaching at least a portion of the polycrystalline diamond table.