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    • 1. 发明授权
    • Dielectric ceramic composition
    • 介电陶瓷组合物
    • US5093757A
    • 1992-03-03
    • US649463
    • 1991-02-05
    • Kouji KawakitaSuzushi KimuraHideyuki OkinakaYouichiro YokotaniMariko Ishikawa
    • Kouji KawakitaSuzushi KimuraHideyuki OkinakaYouichiro YokotaniMariko Ishikawa
    • C04B35/472C04B35/499H01G4/12
    • H01G4/1254C04B35/472C04B35/499
    • The invention relates to a dielectric ceramic composition that can be baked in a short time in the atmosphere, neutral atmosphere or reducing atmosphere at baking temperature of 800.degree. to 1000.degree. C. In the ceramic components expressed by PbTi.sub.X (Mg.sub.1/2 Nb.sub.2/3).sub.Y (Ni.sub.1/2 W.sub.1/2)ZO.sub.3 (where X+Y+Z=1), PbO is added by 1.0 to 25.0 mol % and NiO by 1.0 to 15.0 mol % as subsidiary components, to the temporarily baked powder of the main component dielectric ceramic composition composed in the pentagonal region having the vertices at compositions A, B, C, D, E expressed by numerical values in the following square brackets, in the system of trigonometric coordinates having the vertices at PbTiO.sub.3, Pb(Mg.sub.1/3 Nb.sub.2/3)O.sub.3 and Pb(Ni.sub.1/2 W.sub.1/2)O.sub.3,A is x=2.5, y=9.5, z=2.5;B is x=12.5, y=85.0, z=2.5,C is x=60.0, y=10.0, z=30.0,D is x=40.0, y=10.0, z=50.0,E is x=2.5, y=90.0, z=7.5 (where all untis are mol %)so that a laminate ceramic capacitor or thick film capacitor of large capacity that can be baked densely in a short time at low baking temperature of below 1000.degree. C. will be obtained.
    • 本发明涉及一种可在大气中,中性气氛或还原气氛下在800〜1000℃烘烤温度下短时间烘烤的电介质陶瓷组合物。在PbTiX(Mg1 / 2Nb2 / 3)表示的陶瓷成分中, Y(Ni1 / 2W1 / 2)ZO3(其中X + Y + Z = 1),PbO的添加量为1.0〜25.0mol%,NiO为1.0〜15.0mol%作为辅助成分,添加到主成分 在具有在PbTiO3,Pb(Mg1 / 3Nb2 / Pb)的顶点的三角坐标系统中,在具有由以下方括号中的数值表示的组成A,B,C,D,E的顶点的五边形区域中组成的介电陶瓷组合物, 3)O3和Pb(Ni1 / 2W1 / 2)O3,A为x = 2.5,y = 9.5,z = 2.5; B为x = 12.5,y = 85.0,z = 2.5,C为x = 60.0,y = 10.0,z = 30.0,D为x = 40.0,y = 10.0,z = 50.0,E为x = 2.5,y = 90.0,z = 7.5(其中全部为mol%),从而将获得能够在低于1000℃的低烘烤温度下在短时间内密集烘烤的大容量的层压陶瓷电容器或厚膜电容器。