Polishing abrasive, polishing slurry, method for polishing hard brittle material, and method for producing hard brittle material

摘要

Provided are abrasive grains and a polishing slurry capable of achieving both high polishing speed and surface smoothness for hard and brittle materials such as sapphire. A polishing abrasive used for polishing a hard and brittle material, characterized in that it is an inorganic oxide powder containing connected particles having one or more neck portions and having an average particle diameter of 3 μm or less. Abrasive grains to make.