Patent ID: 7381466

Claim:
Abrasive particles of composition selected from the group consisting of fused or sintered corundums, zirconium corundums, silicon carbides and boron carbide and mixtures thereof; the abrasive particles having a sheathing comprising 0.05 -2.0 weight % of an aqueous binding agent and a 0.05 -5.0 weight % of a complex oxide relative to the mass of the untreated particles; wherein the complex oxide comprises AxByOz where A and B are different elements and x and y are greater than zero, and z corresponding to a product of the sum of (x+y) multiplied by a factor between 1.5 and 2.5; the sheath coatings of the particles affording enhanced surface area to the underlying substrate particles and being thermodynamically stable and highly adherent, thus effecting enhanced abrasion performance of the particles.