Abstract: A chromatographic material of carbon microspheres is disclosed. The carbon microspheres may be surface-derivatized with an organic functional group, such as functional groups suitable for use in chromatographic process, such as C1 to C18 alkyl, including butyl (C4), octyl (C8), and octadecyl (C18), phenyl, amino, cyano, etc. The carbon microspheres may consist of nonporous carbon. The carbon microspheres may consist of porous carbon having a surface area in the range of 1 m2/g to 400 m2/g. A method of making carbon microspheres from a carbonizable polymeric material is disclosed. A method of bonding an organic functional group to a surface of the carbon microspheres is disclosed. HPLC columns may be prepared containing the chromatographic material of carbon microspheres. Such columns may be used to separate a compound of interest from a mixture of different compounds using a chromatographic process, such as HPLC.

Abstract: This disclosure relates to a system for removing road material. In an embodiment, the system may include a milling drum and at least one pick mounted on the milling drum. Furthermore, the pick may include polycrystalline diamond at least partially forming one or more working surfaces of the pick.

Abstract: Embodiments disclosed herein are directed to a system for removing road material. In an embodiment, the system may include a milling drum and at least one pick mounted on the milling drum. The pick may include polycrystalline diamond at least partially forming one or more working surfaces of the pick.

Abstract: A method of processing a polycrystalline diamond element includes forming a protective layer over a selected portion of a polycrystalline diamond element, the polycrystalline diamond element having a polycrystalline diamond table that includes a superabrasive face, a superabrasive side surface, and a chamfer extending between the superabrasive face and the superabrasive side surface. A portion of the superabrasive side surface is covered by the protective layer and the protective layer is not formed over the chamfer. The method includes exposing at least a portion of the polycrystalline diamond element to a leaching solution. A polycrystalline diamond element has a polycrystalline diamond table that includes a leached volume extending from the superabrasive face to a portion of the chamfer proximate to the superabrasive side surface, and the leached volume does not substantially extend along the superabrasive side surface.

Abstract: A method of processing a polycrystalline diamond element includes forming a protective layer over a selected portion of a polycrystalline diamond element, the polycrystalline diamond element having a polycrystalline diamond table that includes a superabrasive face, a superabrasive side surface, and a chamfer extending between the superabrasive face and the superabrasive side surface. A portion of the superabrasive side surface is covered by the protective layer and the protective layer is not formed over the chamfer. The method includes exposing at least a portion of the polycrystalline diamond element to a leaching solution. A polycrystalline diamond element has a polycrystalline diamond table that includes a leached volume extending from the superabrasive face to a portion of the chamfer proximate to the superabrasive side surface, and the leached volume does not substantially extend along the superabrasive side surface.

Abstract: Embodiments disclosed herein are directed to a system for removing road material. In an embodiment, the system may include a milling drum and at least one pick mounted on the milling drum. The pick may include polycrystalline diamond at least partially forming one or more working surfaces of the pick.

Abstract: Embodiments disclosed herein are directed to a system for removing road material. In an embodiment, the system may include a milling drum and at least one pick mounted on the milling drum. The pick may include polycrystalline diamond at least partially forming one or more working surfaces of the pick.

Abstract: Embodiments of the invention relate to polycrystalline diamond compacts (“PDCs”) and methods of fabricating polycrystalline diamond tables and PDCs in a manner that facilitates removal of metal-solvent catalyst used in the manufacture of polycrystalline diamond tables of such PDCs.

Abstract: This disclosure relates to a system for removing road material. In an embodiment, the system may include a milling drum and at least one pick mounted on the milling drum. Furthermore, the pick may include polycrystalline diamond at least partially forming one or more working surfaces of the pick.

Abstract: This disclosure relates to a system for removing road material. In an embodiment, the system may include a milling drum and at least one pick mounted on the milling drum. Furthermore, the pick may include polycrystalline diamond at least partially forming one or more working surfaces of the pick.

Abstract: In an embodiment, a polycrystalline diamond compacts (“PDC”) includes a substrate and a polycrystalline diamond (“PCD”) table bonded to the substrate. The PCD table defines an upper surface and at least one peripheral surface. The PCD table includes a plurality of bonded diamond grains. The PCD table includes a first region adjacent to the substrate that includes a metallic constituent disposed interstitially between the bonded diamond grains thereof, and a leached second region extending inwardly from the upper surface and the at least one peripheral surface that is depleted of the metallic constituent. The leached second region exhibits a leach depth profile having a maximum leach depth that is measured from the upper surface. A leach depth of the leach depth profile decreases with lateral distance from a central axis of the PCD table and toward the at least one peripheral surface.

Abstract: This disclosure relates to a system for removing road material. In an embodiment, the system may include a milling drum and at least one pick mounted on the milling drum. Furthermore, the pick may include polycrystalline diamond at least partially forming one or more working surfaces of the pick.

Abstract: Embodiments disclosed herein are directed to a system for removing road material. In an embodiment, the system may include a milling drum and at least one pick mounted on the milling drum. The pick may include polycrystalline diamond at least partially forming one or more working surfaces of the pick.

Abstract: In an embodiment, a polycrystalline diamond compacts (“PDC”) includes a substrate and a polycrystalline diamond (“PCD”) table bonded to the substrate. The PCD table defines an upper surface and at least one peripheral surface. The PCD table includes a plurality of bonded diamond grains. The PCD table includes a first region adjacent to the substrate that includes a metallic constituent disposed interstitially between the bonded diamond grains thereof, and a leached second region extending inwardly from the upper surface and the at least one peripheral surface that is depleted of the metallic constituent. The leached second region exhibits a leach depth profile having a maximum leach depth that is measured from the upper surface. A leach depth of the leach depth profile decreases with lateral distance from a central axis of the PCD table and toward the at least one peripheral surface.

Abstract: This disclosure relates to a system for removing road material. In an embodiment, the system may include a milling drum and at least one pick mounted on the milling drum. Furthermore, the pick may include polycrystalline diamond at least partially forming one or more working surfaces of the pick.

Abstract: Embodiments disclosed herein are directed to a system for removing road material. In an embodiment, the system may include a milling drum and at least one pick mounted on the milling drum. The pick may include polycrystalline diamond at least partially forming one or more working surfaces of the pick.

Abstract: Embodiments of the invention relate to polycrystalline diamond compacts (“PDCs”) and methods of fabricating polycrystalline diamond tables and PDCs in a manner that facilitates removal of metal-solvent catalyst used in the manufacture of polycrystalline diamond tables of such PDCs.

Abstract: In an embodiment, a polycrystalline diamond compacts (“PDC”) includes a substrate and a polycrystalline diamond (“PCD”) table bonded to the substrate. The PCD table defines an upper surface and at least one peripheral surface. The PCD table includes a plurality of bonded diamond grains. The PCD table includes a first region adjacent to the substrate that includes a metallic constituent disposed interstitially between the bonded diamond grains thereof, and a leached second region extending inwardly from the upper surface and the at least one peripheral surface that is depleted of the metallic constituent. The leached second region exhibits a leach depth profile having a maximum leach depth that is measured from the upper surface. A leach depth of the leach depth profile decreases with lateral distance from a central axis of the PCD table and toward the at least one peripheral surface.

Abstract: Embodiments of the invention relate to polycrystalline diamond compacts (“PDCs”) and methods of fabricating polycrystalline diamond tables and PDCs in a manner that facilitates removal of metal-solvent catalyst used in the manufacture of polycrystalline diamond tables of such PDCs.

Abstract: Embodiments disclosed herein are directed to a system for removing road material. In an embodiment, the system may include a milling drum and at least one pick mounted on the milling drum. The pick may include polycrystalline diamond at least partially forming one or more working surfaces of the pick.