Extruded alumina-based abrasive grit, abrasive products, and methods
Assignee3M Innovative Properties Company
InventorDwight D. Erickson
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Abstract
Alumina-based abrasive material having at least an internal core structure is provided. Preferably, the abrasive material results from co-extrusion of at least two different sols. In some preferred processing, steps to provide multiple internal core structures are conducted.
Claims14
A ceramic abrasive comprising sintered, rod-shaped, densified particles having more than one continuous and contiguous, radially stratified, alumina-based layers of different phases, wherein at least one layer is an internal core and one layer is an external sheath having a measured radial thickness of at least 50 microns and a geometric cross-section.
Dependencies are inferred from the claim text.