Process for production of fine .alpha.-alumina powder
    1.
    发明授权
    Process for production of fine .alpha.-alumina powder 失效
    α-氧化铝粉末生产工艺

    公开(公告)号:US5449389A

    公开(公告)日:1995-09-12

    申请号:US146841

    申请日:1993-01-28

    IPC分类号: C01F7/02 C09K3/14 C09C1/68

    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。