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    • 9. 发明授权
    • Method for producing non-reducible dielectric ceramic composition
    • 不可还原介电陶瓷组合物的制造方法
    • US4988468A
    • 1991-01-29
    • US141999
    • 1988-01-06
    • Goro NishiokaShuuji WatanabeYukio Sakabe
    • Goro NishiokaShuuji WatanabeYukio Sakabe
    • C04B35/468H01G4/12
    • C04B35/4682H01G4/1245
    • A method for producing non-reducible dielectric ceramics of the kind comprising a basic composition of a three component system BaTiO.sub.3 -CaTiO.sub.3 -CaZrO.sub.3 or a four component system BaTiO.sub.3 -CaTiO.sub.3 -CaZrO.sub.3 -MgTiO.sub.3 and containing additives composed of at least manganese oxide and silicon dioxide. The method comprises the steps of separately preparing calcined powders of at least three perovskite compounds including BaTiO.sub.3, CaTiO.sub.3 and CaZrO.sub.3, mixing the calcined powders to prepare a mixture for a basic composition, adding additives composed of at least manganese oxide and silicon dioxide to the mixtures for the basic composition, and then firing the resultant mixture in a reducing atmosphere. One of the oxides, magnesium oxide, calcium oxide, strontium oxide and barium oxide is additionally incorporated into the mixture for the basic composition together with manganese oxide and silicon dioxide.
    • 一种生产这样的不可还原电介质陶瓷的方法,其包括三组分体系BaTiO3-CaTiO3-CaZrO3或四组分体系BaTiO3-CaTiO3-CaZrO3-MgTiO3的基本组成,并且含有至少由氧化锰和二氧化硅组成的添加剂 。 该方法包括分别制备包括BaTiO 3,CaTiO 3和CaZrO 3的至少三种钙钛矿化合物的煅烧粉末的步骤,混合煅烧粉末以制备用于碱性组合物的混合物,向混合物中加入由至少氧化锰和二氧化硅组成的添加剂 对于基本组成,然后在还原气氛中烧结所得混合物。 氧化物,氧化镁,氧化钙,氧化锶和氧化钡之一另外与氧化锰和二氧化硅一起并入碱性组合物的混合物中。