Embodiments of the invention relate to non-cylindrical polycrystalline diamond compacts (“PDCs”), and methods of fabricating such non-cylindrical PDCs without substantially undercutting a cemented carbide substrate thereof from an overlying polycrystalline diamond (“PCD”) table thereof. According to various embodiments, a PDC includes a PCD table including an upper surface and a table non-cylindrical lateral periphery. The PDC includes a cemented carbide substrate bonded to the PCD table. In an embodiment, the cemented carbide substrate includes a substrate non-cylindrical lateral periphery that is not substantially undercut from the table non-cylindrical lateral periphery of the PCD table. In an embodiment, the PDC includes at least one alignment feature positioned on the cemented carbide substrate and/or the PCD table.

A cutting element for use in a drilling bit and/or a milling bit having a cutter body made of a substrate having an upper surface, and a superabrasive layer overlying the upper surface of the substrate. The cutting element further includes a sleeve extending around a portion of a side surface of the superabrasive layer and a side surface of the substrate, wherein the sleeve exerts a radially compressive force on the superabrasive layer.

A cutting element for use in a drilling bit and/or a milling bit having a cutter body made of a substrate having an upper surface, and a superabrasive layer overlying the upper surface of the substrate. The cutting element further includes a sleeve extending around a portion of a side surface of the superabrasive layer and a side surface of the substrate, wherein the sleeve exerts a radially compressive force on the superabrasive layer.

A method of forming a shaped abrasive particle including extruding a mixture into a form, applying a dopant material to an exterior surface of the form, and forming a precursor shaped abrasive particle from the form.

A superabrasive compact and a method of making the superabrasive compact are disclosed. A superabrasive compact may include a plurality of polycrystalline superabrasive particles made of surface functionalized superabrasive particles. The surface functionalized superabrasive particles may have halogens or organic moiety instead of hydrogen.

A metallic abrasive pad for use in a smoothing operation applied to a worked surface of a workpiece by a catalyst-supported chemical machining method, the metallic abrasive pad including a compression-formed compact of one or more metal fibers made of a transition-metal catalyst, wherein a contact spot of the one or more metal fibers intersecting each other is sintered, the one or more metal fibers are fixed to each other, and the metallic abrasive pad has a prescribed void ratio.

The invention is directed to a multi-layer polishing pad for chemical-mechanical polishing comprising a top layer, a middle layer and a bottom layer, wherein the top layer and bottom layer are joined together by the middle layer, and without the use of an adhesive. The invention is also directed to a multi-layer polishing pad comprising an optically transmissive region, wherein the layers of the multi-layer polishing pad are joined together without the use of an adhesive.

A compact, a superabrasive compact and a method of making the compact and superabrasive compact are disclosed. A compact may include a plurality of carbide particles, a binder, and a species. The binder may be dispersed among the plurality of tungsten carbide particles. The species may be dispersed in the compact, wherein the binder has a melting point from about 600° C. to about 1350° C. at ambient pressure. A superabrasive compact may include a diamond table and a substrate. The diamond table may be attached to the substrate. The substrate may have a binder. The melting point of the binder is from about 600° C. to about 1350° C. at high pressure from about 30 kbar to about 100 kbar.

Polycrystalline diamond bodies having an annular region of diamond grains and a core region of diamond grains and methods of making the same are disclosed. In one embodiment, a polycrystalline diamond body includes an annular region of inter-bonded diamond grains having a first characteristic property and a core region of inter-bonded diamond grains bonded to the annular region and having a second characteristic property that differs from the first characteristic property. The annular region decreases in thickness from a perimeter surface of the polycrystalline diamond body towards a centerline axis.

Polycrystalline diamond bodies having an annular region of diamond grains and a core region of diamond grains and methods of making the same are disclosed. In one embodiment, a polycrystalline diamond body includes an annular region of inter-bonded diamond grains having a first characteristic property and a core region of inter-bonded diamond grains bonded to the annular region and having a second characteristic property that differs from the first characteristic property. The annular region decreases in thickness from a perimeter surface of the polycrystalline diamond body towards a centerline axis.