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公开(公告)号:US5449389A
公开(公告)日:1995-09-12
申请号:US146841
申请日:1993-01-28
申请人: Motohiko Yoshizumi , Hisae Hirako
发明人: Motohiko Yoshizumi , Hisae Hirako
CPC分类号: C01F7/021 , C09K3/1409 , C01P2006/12 , C01P2006/13
摘要: A process for production of a fine alpha-alumina powder having a specific surface area of not smaller than 10 m.sup.2 /g and superior polishing characteristics is provided, the process comprising heat-treating a mixture of gamma-alumina powder and silica at a temperature at which gamma-alumina is converted to alpha-alumina in the presence of silica, wherein the mixture contains not more than about 10 wt % of silica, based on the weight of the gamma-alumina.
摘要翻译: 提供了具有不小于10m 2 / g的比表面积并且具有优异的抛光特性的精细α-氧化铝粉末的制造方法,该方法包括在γ-氧化铝粉末和二氧化硅的混合物的温度下 在二氧化硅存在下将γ-氧化铝转化为α-氧化铝,其中基于γ-氧化铝的重量,该混合物含有不超过约10重量%的二氧化硅。