Process for the preparation of sintered alpha-alum

专利名称：Process for the preparation of sintered

alpha-alumina bodies and use thereof

发明人：MOELTGEN, PAUL, DR.,WILHELM,

PIRMIN,SCHMOLL, JOSEF, DR.

申请号：EP96100966.9申请日：19960124公开号：EP0725045A1公开日：19960807

摘要：Sintered microcrystalline shapes are mfrd. from alpha -Al2O3 powder with amean particle size of not more than 3 mu m by first milling it to a slurry with a meanparticle size of less then 1 mu m. The slurry is dried to a moisture content of not morethan 6 wt.% and pressed to a green shape with a density of at least 60% of thetheoretical density. This is subjected to shock sintering at a temp. between 1300 and1550 degrees C. The time to bring the shapes to temp. was not more than 60 sec. andpref. not more than 10 sec.

申请人：H.C. STARCK GMBH & CO. KG

地址：Im Schleeke 78-91 D-38642 Goslar DE

国籍：DE

代理机构：Steiling, Lothar, Dr.

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