PROCESSO PARA A PRODUCAO DE PARTICULAS DE ALFA ALUMINA,ALUMINA EM PO FINA,E SUSPENSAO PARA POLIMENTO

摘要

Nano-sized powders of alpha alumina can be obtained from a boehmite gel doped with a barrier-forming material such as silica that is then dried, fired and comminuted to powder form. Preferred uses of the powder are in a polishing slurry and in a process for the production of alpha-alumina by a seeded sol gel process.