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    • 3. 发明授权
    • Method of producing sintered ceramic body
    • 烧结陶瓷体的制造方法
    • US5250244A
    • 1993-10-05
    • US911782
    • 1992-07-10
    • Yukihiro KimuraSumihito TominagaRokuro Kanbe
    • Yukihiro KimuraSumihito TominagaRokuro Kanbe
    • C04B35/111C04B35/185C04B35/622C04B35/64
    • C04B35/622C04B35/111C04B35/185
    • A method of producing a sintered body by molding a mixture of a ceramic base powder, a sintering assistant powder and an organic binder and sintering the molded body in a non-oxidizing atmosphere is disclosed in which the ceramic base powder has such a particle size distribution that the amount of powder particles not greater than 1.0 .mu.m in size is not more than 15% by weight and the average particle diameter is not greater than 5 .mu.m. According to the method, therefore, sufficient passage of gas is secured in a degreasing step, resulting in an enhanced degreasing efficiency and exellent sintering properties. Where the sintering assistant powder has such a particle size distribution that the amount of powder particles not greater than 10 .mu.m in size is not more than 5% by weight, the amount of coarse powder is extremely small and, therefore, large voids are not formed. It is thus possible to produce easily a high-quality sintered body by controlling the respective particle size distributions of the powders.
    • 公开了一种通过模制陶瓷基底粉末,烧结辅助粉末和有机粘合剂的混合物并在非氧化性气氛中烧结成型体来制造烧结体的方法,其中陶瓷基础粉末具有这样的粒度分布 不大于1.0μm的粉末颗粒的量不大于15重量%,平均粒径不大于5μm。 因此,根据该方法,在脱脂工序中确保充分的气体通过,从而提高脱脂效率和良好的烧结性能。 当烧结辅助粉末具有这样的粒度分布,其尺寸不大于10微米的粉末颗粒的量不大于5重量%时,粗粉末的量非常小,因此,大的空隙不是 形成。 因此,通过控制粉末的各自的粒度分布,可以容易地制造高品质的烧结体。