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    • 7. 发明授权
    • Dielectric ceramic composition for boundary layer condensers and a
method for preparing the same
    • 用于边界层冷凝器的介电陶瓷组合物及其制备方法
    • US5597769A
    • 1997-01-28
    • US423496
    • 1995-04-19
    • Yoon H. KimIn-Kyu YooJae-Dong Byun
    • Yoon H. KimIn-Kyu YooJae-Dong Byun
    • C04B35/46C03C10/00C04B35/47C03C14/00
    • C04B35/47C03C10/00
    • A dielectric ceramic composition having an empirical formula represented by (Sr.sub.l-2x Bi.sub.x Ti.sub.l-y W.sub.y)O.sub.3 wherein x is in a range of 0.0005 to 0.003 and y is in a range of 0.0015 to 0.009 for boundary layer condensers and a method for preparing the same which are comprising the steps of: mixing Bi.sub.2 O.sub.3 -WO.sub.3 frit powder with main component having an empirical formula represented by Sr.sub.l-2x Ti.sub.l-y O.sub.3 wherein x is in a range of 0.0005 to 0.003 and y is in a range of 0.0015 to 0.009, in a wet manner, the Bi.sub.2 O.sub.3 frit serving as a reducing agent; drying the resulting mixture; sintering the dried mixture at a temperature of 1,400 to 1,470.degree. C under a reducing atmosphere; and applying secondary thermal treatment to the sintered body at 1,250.degree. C are disclosed.
    • 具有由(Srl-2xBixTil-yWy)O3表示的经验式的介电陶瓷组合物及其制备方法,其中x在0.0005至0.003的范围内,y对于边界层冷凝器的范围为0.0015至0.009, 包括以下步骤:将Bi 2 O 3 -WO 3玻璃料粉末与主要组分混合,其主要组分具有由Srl-2xTil-yO 3表示的经验式,其中x在0.0005至0.003的范围内,y在0.0015至0.009的范围内, 方式,作为还原剂的Bi2O3玻璃料; 干燥所得混合物; 在还原气氛下,在1400〜1,470℃的温度下烧结干燥后的混合物; 并公开了在1,250℃下对烧结体进行二次热处理。