METHOD FOR PRODUCING SINTERED MATERIAL ON ALPHA-ALUMINIUM-OXID BASE PREFERABLE AS GRINDING ONE

摘要

A sintered material, especially usuable as an abrasive, based on alpha -aluminum oxide is produced from Al(OH)3 or aluminum oxide calcined at a lower temperature. Aluminum hydroxide resulting in the Bayer process can be used as the Al(OH)3. The sintered material is distinguished by a crystallite size of standard 0.5 mu m, high density and great hardness.