CERIUM BASED ABRASIVE MATERIAL AND ABRASIVE MATERIAL SLURRY, AND METHOD FOR PRODUCING CERIUM BASED ABRASIVE MATERIAL

摘要

A cerium based abrasive material containing cerium oxide as a primary component, characterized in that abrasive material particles constituting the abrasive material are covered with at least one of a silicon component comprising silicon or a silicon compound and an aluminum component comprising aluminum or an aluminum compound; and a method for producing the abrasive material which comprises subjecting a cerium based abrasive material to wet dispersion in a dispersion medium, to prepare a slurry, and adding a treating solution containing at least one of a silicon compound and an aluminum compound to the slurry, to treat the surface of the abrasive material, or which comprises adding a treating solution containing at least one of a silicon compound and an aluminum compound to a slurry during or after a pulverization step of a conventional process for producing a cerium based abrasive material, to treat the surface of the conventional abrasive material, followed by roasting and then classifying.