Abstract: An abrasive cutting tool has a body in the shape of a large diameter disk having an outer diameter of at least about 60 centimeters, and an aspect ratio defined as a ratio between the outer diameter to an axial thickness of the body of at least about 10:1. The body includes an abrasive portion having a bond material and abrasive particles contained within the bond material. The abrasive particles comprise brown fused alumina. A first filler is contained within the abrasive portion comprising iron and sulfur having an average particle size of not greater than about 40 microns.

Abstract: An abrasive article including a substrate made of a wire, abrasive particles affixed to the substrate, the abrasive particles having a first coating layer overlying the abrasive particles, and a second coating layer different than the first coating layer overlying the first coating layer. The abrasive article further including a bonding layer overlying the substrate and abrasive particles.

Abstract: An abrasive article having a substrate, a tacking film overlying the substrate, abrasive particles comprising a coating layer bonded to the tacking film such that a bond between the coating layer and the tacking film defines a metallic bonding region, and a bonding layer overlying the abrasive particles and the tacking film,

Abstract: An abrasive article having a substrate, a tacking film overlying the substrate, abrasive particles comprising a coating layer bonded to the tacking film such that a bond between the coating layer and the tacking film defines a metallic bonding region, and a bonding layer overlying the abrasive particles and the tacking film,

Abstract: A method of forming a chemical mechanical planarization (CMP) pad conditioner includes placing abrasive grains on a major surface of a substrate, forming a binding composition at an exterior surface of the abrasive grains, and depositing a bonding layer over the surface of the substrate and a portion of the abrasive grains to secure the abrasive grains to the major surface of the substrate.

Abstract: An abrasive article includes an organic bond material, an abrasive material dispersed in the organic bond material, mineral wool microfibers uniformly dispersed in the organic bond material, the mineral wool microfibers being individual filaments, one or more reinforcement and/or chopped strand fibers dispersed in the organic bond material and one or more active fillers including, for example, a manganese compound. The abrasive article can be used in the abrasive processing of a workpiece.

Abstract: Sol-gel alumina that is dried but unfired can be explosively comminuted by feeding the dried gel into a furnace held at temperatures above those at which vaporizable materials are eliminated from the particles of gel. At suitably elevated temperatures the firing is sufficient to form fully densified alpha alumina particles of a size suitable for direct use as abrasive grits.

Abstract: Sol-gel alumina that is dried but unfired can be explosively comminuted by feeding the dried gel into a furnace held at temperatures above those at which vaporizable materials are eliminated from the particles of gel. At suitably elevated temperatures the firing is sufficient to form fully densified alpha alumina particles of a size suitable for direct use as abrasive grits.

Abstract: Sol-gel alumina that is dried but unfired can be explosively comminuted by feeding the dried gel into a furnace held at temperatures above those at which vaporizable materials are eliminated from the particles of gel. At suitably elevated temperatures the firing is sufficient to form fully densified alpha alumina particles of a size suitable for direct use as abrasive grits.

Abstract: The use of purified process materials in the production of a seeded sol-gel alumina abrasive results in an abrasive of superior properties.

Abstract: The invention provides a process for recovering abrasive grains from vitreous bonded materials by boiling the material in an aqueous solution of an alkali metal base.

Abstract: A process for producing dry substantially crack-free shaped bodies, such as grinding wheels, from a sol-gel alumina hydrate composition is disclosed. The shaped bodies are formed by either a one or a two step forming process and avoid having to pre-prepare alpha alumina grits. The addition of specific crack-avoiding drying control additives, e.g. whiskers, chopped fibers, agarose gels, and formamide, to the sol-gel alumina hydrate prior to water removal therefrom substantially prevents crack-formation during the water removal operation.

Abstract: Fine alumina powders for making alumina bodies are produced by seeding of a non-alpha alumina with submicron alpha alumina particles, firing, and crushing and milling the fired product to a fine powder. The powder so produced may be formed by conventional techniques such as pressing, granulating, slip casting, tape casting, and extrusion, and sintered to produce the desired fired product.

Abstract: Aluminous proppant media in the form of sintered bauxite spheres containing silica are improved in resistance to stress corrosion by inclusion of zirconia in the mix prior to firing in the amount of a silica to zirconia ratio of from 6/1 to 20/1.