Production of sintered microcrystalline molded body used as an abrasive body comprises mixing alpha-alumina with a binder and a solvent to form a mixture, extruding the mixture to an extrudate, processing to molded bodies, and sintering

摘要

Production of sintered microcrystalline molded body based on alpha -Al2O3 with a hardness HV0.2 of at least 15 GPa, a density of at least 95% of the theoretical density, an average primary crystal size of less than 2 mu m and an Al2O3 content of at least 98 wt.% comprises mixing an alpha -Al2O3 as starting material with a binder and a solvent to form a mixture; extruding the mixture to an extrudate; and processing to molded bodies which are then sintered at 1300-1750 deg C.