Various embodiments disclosed relate to an abrasive article. The abrasive article includes a metallic matrix component, an abrasive particle component dispersed within the metallic matrix component; and a filler particle component dispersed within the metallic matrix component. A portion of the filler particle component is at least partially coated by a first metallic layer. Additionally, a hardness of the abrasive particle component is greater than a hardness of the filler particle component

A diamond tool comprising a tool shank and a tool head, which is fixed on the tool shank and which is formed by a layer of material interspersed with diamonds at least in sections, the layer of material interspersed with diamonds at least in sections being directly integrally bonded to the tool shank by an electroplating deposition process and the tool head having a recess on the front side, so that in cross-section the tool head has the form of a circular ring in the area of the free end, the tool head forming a hollow milling cutter and a wall forming the hollow milling cutter and having the form of a circular ring consisting only of a nickel-diamond material that is grown by electroplating.

A method for electrostatically scattering an abrasive grain includes applying at least one electro-conductive material to the abrasive grain. The electro-conductive material is in the form of at least one organic compound.

A method for electrostatically scattering an abrasive grain includes applying at least one electro-conductive material to the abrasive grain. The electro-conductive material is in the form of at least one organic compound.

A superabrasive-impregnated earth-boring rotary drill bit includes cutting features extending outwardly from a bit body in a nose region of the drill bit. The cutting features comprise a composite material including superabrasive particles embedded within a matrix material. The cutting features extend from an outer surface of the bit body by a relatively high average distance. Methods of forming a superabrasive-impregnated earth-boring rotary drill bit include the formation of cutting features that extend outwardly from a bit body of a drill bit in a nose region of the drill bit. The cutting features are formed to comprise a particle-matrix composite material that includes superabrasive particles embedded within a matrix material. The cutting features are further formed such that they extend from the outer surface of the bit body by a relatively high average distance.

A superabrasive-impregnated earth-boring rotary drill bit includes cutting features extending outwardly from a bit body in a nose region of the drill bit. The cutting features comprise a composite material including superabrasive particles embedded within a matrix material. The cutting features extend from an outer surface of the bit body by a relatively high average distance. Methods of forming a superabrasive-impregnated earth-boring rotary drill bit include the formation of cutting features that extend outwardly from a bit body of a drill bit in a nose region of the drill bit. The cutting features are formed to comprise a particle-matrix composite material that includes superabrasive particles embedded within a matrix material. The cutting features are further formed such that they extend from the outer surface of the bit body by a relatively high average distance.

The invention provides a float trowel blade attachment for cement floor finishers comprising a rectangular section of sheet metal having a top surface and a bottom surface and having its edges optionally bent upwardly, means for providing to the top surface a three-sided rearwardly open pocket on the back of the section adjacent the leading edge thereof adapted to partially receive a finish trowel blade of the finisher, a spring clip secured to the top surface or the pocket-forming means and extending rearwardly therefrom so as to be engageable with the finish trowel blade to retain the section thereon, and wherein said rectangular sheet metal has attached to its bottom surface using an adhesive or mechanical attachment material interlayer, a composite rigid abrasive element bonded to a resilient backing.

The invention provides a float trowel blade attachment for cement floor finishers comprising a rectangular section of sheet metal having a top surface and a bottom surface and having its edges optionally bent upwardly, means for providing to the top surface a three-sided rearwardly open pocket on the back of the section adjacent the leading edge thereof adapted to partially receive a finish trowel blade of the finisher, a spring clip secured to the top surface or the pocket-forming means and extending rearwardly therefrom so as to be engageable with the finish trowel blade to retain the section thereon, and wherein said rectangular sheet metal has attached to its bottom surface using an adhesive or mechanical attachment material interlayer, a composite rigid abrasive element bonded to a resilient backing.

A functionally graded abrasive structure with controlled variation in abrasive content in one or more directions ranging from 5% to 60% by volume, together with variation in porosity content ranging from 5% to 50% within the structure, wherein the variation in abrasive content is achieved through packing efficiencies, mixture of different nominal size abrasives.

A functionally graded abrasive structure with controlled variation in abrasive content in one or more directions ranging from 5% to 60% by volume, together with variation in porosity content ranging from 5% to 50% within the structure, wherein the variation in abrasive content is achieved through packing efficiencies, mixture of different nominal size abrasives.