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.

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.

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.

Provided is an abrasive film not likely to cause an end face defect of an optical fiber connector due to variation in load conditions during polishing, while providing a great grinding force. The abrasive film comprises a substrate film and an abrasive layer overlaid thereon, the abrasive layer comprising abrasive particles and a binder therefor and a wear quantity of the abrasive layer being from 10 mg to 25 mg. A content of the abrasive particles in the abrasive layer is preferably no less than 85% by mass. The abrasive particles preferably comprise first abrasive particles (primary particle diameter: of no less than 10 nm and less than 50 nm), and second abrasive particles (primary particle diameter: no less than 50 nm and less than 250 nm). An average thickness of the abrasive layer is preferably from 4 μm to 15 μm. The abrasive particles are preferably silica particles.

Embodiments of the invention relate to polycrystalline diamond compacts (“PDCs”) and methods of fabricating such PDCs. In an embodiment, a PDC includes a substrate and a preformed polycrystalline diamond table including an interfacial surface bonded to the substrate and an opposing working surface. The preformed polycrystalline diamond table includes a proximal region extending from the interfacial surface to an intermediate location within the preformed polycrystalline diamond table that includes a metallic infiltrant infiltrated from the substrate, and a distal region extending from the working surface to the intermediate location that is substantially free of the metallic infiltrant. A boundary exists between the proximal and distal regions that has a nonplanar irregular profile characteristic of the metallic infiltrant having been infiltrated into the preformed polycrystalline diamond table.

The present invention provides a method for fabricating a super mirror finish stainless steel sheet uses the following steps: 1) rough machining, wherein a 400-450 grit sandpaper or scouring pad is used to remove an oxide layer on a surface of a stainless steel decorative sheet; 2) finish machining, wherein a 240-1,000 grit graphite grinding wheel is used to perform finish grinding; and 3) polishing processing, wherein an abrasive material is used to perform polishing. For the finish grinding and the polishing that are performed by using the grinding wheel and the abrasive material respectively, a multi-shaft polishing system is used to drive a grinding wheel, and a cylinder is controlled to adjust a force of each polishing shaft, which enables a stainless steel decorative sheet to have a surface finish under 0.01 μm and a reflectivity above 69%.

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.

Described herein is an improved abrasive material (300) in which the cutting performance is orientation-independent. The abrasive material (300) comprises an abrasive structure (310) including a plurality of elongate abrasive elements (320, 330) aligned to be define a first open square. A plurality of pyramidal abrasive elements (340, 350) arranged in a second open square are located within the first open square defined by the elongate elements (320, 330).

Apparatus includes a production tooling having a dispensing surface with a plurality of cavities and formed into an endless belt. An abrasive particle feeder dispenses shaped abrasive particles onto the dispensing surface and into the plurality of cavities. A resin coated backing receives shaped abrasive particles from the cavities of the production tooling at a deposit point. A detecting device detects a pattern transition zone as the production tooling moves in the direction of travel and provides pattern transition zone detection data to one or more controllers to control a speed of the production tooling and/or a speed of the resin coated backing as the detected pattern transition zone passes the deposit point to change a pattern density of the shaped abrasive particles in a portion of the resin coated backing corresponding to the pattern transition zone of the production tooling.

The present disclosure provides systems, devices, and methods for abrasive articles and manufacturing the same. A shaped abrasive particle placement tool can include a substrate including an abrasive particle receiving surface defining an x-y plane including an x-axis and a y-axis and a back surface opposite the abrasive particle receiving surface, cavities formed in the substrate, the cavities including one or more sidewalls, the cavities including a width and length at the abrasive article receiving surface, and a depth defined by a distance the first cavities extend from the abrasive article receiving surface towards the back surface in a direction parallel to a z-axis perpendicular to the x-y plane, and respective protrusions between two or more proximate cavities, the respective protrusions extending from the abrasive article receiving surface in a direction parallel to the z-axis and away from the back surface, and shaped abrasive particles situated in the cavities.