A fixed abrasive article having a body including abrasive particles contained within a bond material, the abrasive particles including shaped abrasive particles or elongated abrasive particles having an aspect ratio of length:width of at least 1.1:1, each of the shaped abrasive particles or elongated abrasive particles having a predetermined position or a predetermined three-axis orientation.

A fixed abrasive article having a body including abrasive particles contained within a bond material, the abrasive particles including shaped abrasive particles or elongated abrasive particles having an aspect ratio of length:width of at least 1.1:1, each of the shaped abrasive particles or elongated abrasive particles having a predetermined position or a predetermined three-axis orientation.

Embodiments relate to polycrystalline diamond compacts (PDCs) including a polycrystalline diamond (PCD) table in which a metal-solvent catalyst is alloyed with at least one alloying element to improve thermal stability of the PCD table. In an embodiment, a PDC includes a substrate and a PCD table bonded to the substrate. The PCD table includes diamond grains defining interstitial regions. The PCD table includes an alloy comprising at least one Group VIII metal and at least one metallic alloying element that lowers a temperature at which melting of the at least one Group VIII metal begins. The alloy includes one or more solid solution phases comprising the at least one Group VIII metal and the at least one metallic alloying element and one or more intermediate compounds comprising the at least one Group VIII metal and the at least one metallic alloying element.

The present application is a new improvement in the fine-grained cubic Boron Nitride sintered compact which may be employed to manufacture a cutting tool. The compact contains at least 80 vol % cBN and is sintered under HPHT conditions. The invention has lower levels of unreacted cobalt in the final sintered material than conventions materials. The invention has proved beneficial in the machining of ferrous metal alloys such as sintered metal alloys.

The present invention relates to a polycrystalline diamond compact. A method for manufacturing a polycrystalline diamond compact includes: preparing primary sintering by mixing and assembling first diamond particles and metal binder particles; sintering the mixed and assembled particles; leaching the upper surface of the sintered polycrystalline diamond compact; preparing secondary sintering by mixing second diamond particles and the metal binder particles and assembling the mixed particles on the upper surface of the primarily sintered polycrystalline diamond compact; sintering the sintered polycrystalline diamond compact and the mixed particles of the upper part; and a grinding step of grinding the reassembled second diamond particles and metal binder particles so as to remove the same. The polycrystalline diamond compact minimizes the content of the residual metal binder in a surface layer and increases the content of the diamond particles with high thermal conductivity, thereby increasing the lifespan of the polycrystalline diamond compact.

A fixed abrasive article having a body including abrasive particles contained within a bond material, the abrasive particles including shaped abrasive particles or elongated abrasive particles having an aspect ratio of length:width of at least 1.1:1, each of the shaped abrasive particles or elongated abrasive particles having a predetermined position or a predetermined three-axis orientation.

A fixed abrasive article having a body including abrasive particles contained within a bond material, the abrasive particles including shaped abrasive particles or elongated abrasive particles having an aspect ratio of length:width of at least 1.1:1, each of the shaped abrasive particles or elongated abrasive particles having a predetermined position or a predetermined three-axis orientation.

Methods of making cutting elements for earth-boring tools may involve placing a powdered mixture into a mold. The powdered mixture may include a plurality of core particles comprising a diamond material and having an average diameter of between 1 m and 500 m, a coating material adhered to and covering at least a portion of an outer surface of each core particle of the plurality of core particles, the coating material comprising an amine terminated group, and a plurality of nanoparticles selected from the group consisting of carbon nanotubes, nanographite, nanographene, non-diamond carbon allotropes, surface modified nanodiamond, nanoscale particles of BeO, and nanoscale particles comprising a Group VIIIA element adhered to the coating material. The powdered mixture may be sintered to form a polycrystalline diamond table. The polycrystalline diamond table may be attached to a substrate.

A method of making conglomerate abrasive particles includes: providing agglomerate abrasive particles comprising mineral particles in a first vitreous binder; combining the agglomerate abrasive particles with a second vitreous binder material precursor to form precursor conglomerate abrasive particles; and heating the precursor conglomerate abrasive particles to convert the second vitreous binder material precursor into a second vitreous binder, different from the first vitreous binder, thereby forming the conglomerate abrasive particles. The first vitreous binder differs from the second vitreous binder by at least one of: i) elemental composition, or ii) an intrinsic physical property; and wherein the conglomerate abrasive particles can pass through a testing sieve having one-millimeter openings. Conglomerate abrasive particles preparable by the method, and abrasive articles containing them, are also disclosed.

A superabrasive element includes a substrate and a superabrasive table bonded to the substrate, the superabrasive table including a polished surface having a polished finish, the polished surface extending over at least a central, apical region of the superabrasive table, and an unpolished surface including an unpolished finish, the unpolished surface surrounding a majority of the polished surface. A method of manufacturing a superabrasive element includes providing a superabrasive element having a substrate and a superabrasive table bonded to the substrate and polishing at least a central, apical region of the superabrasive table to form a polished surface, without polishing an unpolished surface of the superabrasive table, the unpolished surface surrounding a majority of the polished surface.