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1. 发明授权

US6074970A Dielectric ceramic composition, multilayer ceramic capacitor and process of producing same 失效
标题翻译：介电陶瓷组合物，多层陶瓷电容器及其制造方法
公开(公告)号：US6074970A
公开(公告)日：2000-06-13
申请号：US209539
申请日：1998-12-11
申请人： Yohashi Yamashita , Hideyuki Kanai , Hironari Shoji , Yuichi Nakano
发明人： Yohashi Yamashita , Hideyuki Kanai , Hironari Shoji , Yuichi Nakano
IPC分类号： C04B35/46 , C04B35/468 , H01G4/12
CPC分类号： C04B35/468 , H01G4/1227
摘要： A multilayer ceramic capacitor is produced by using a dielectric ceramic composition prepared by allowing a composition represented by the composition formula (Ba.sub.1-x Ca.sub.x)TiO.sub.3 (provided that 0.005.ltoreq.x.ltoreq.0.05), namely, 0.5-5 mol % to contain an additive of MnO--CoO--MgO at 0.2 to 2 mol % and a Y.sub.2 O.sub.3 additive at 2.5 mol % or less and further adding a glass component comprising SiO.sub.2 --Al.sub.2 O.sub.3 --BaO--CaO--Ta.sub.2 O.sub.5 at 0.5 to 5 mol % to the resulting composition. The dielectric ceramic composition can be prepared into slurry well by using an aqueous binder and can be sintered well with no occurrence of any crack even by fast firing, and even after barrel treatment, additionally, chipping hardly occurs in the dielectric ceramic composition. Accordingly, the resulting multilayer ceramic capacitor exerts an excellent breakdown voltage even at a large size and can therefore satisfy the JIS B characteristic.
摘要翻译：通过使用通过使由组成式（Ba1-xCax）TiO3（0.005≤x≤0.05）表示的组成即0.5-5摩尔％的组成式（Ba1-xCax）TiO3（即0.005≤x≤0.05）制备的电介质陶瓷组合物含有0.2〜2摩尔％的MnO-CoO-MgO的添加剂和2.5摩尔％以下的Y2O3添加剂，进一步向所得到的含有0.5〜5摩尔％的SiO 2 -Al 2 O 3 -BaO-CaO-Ta 2 O 5的玻璃成分添加组成。电介质陶瓷组合物可以通过使用水性粘合剂制备成浆料，并且即使通过快速烧制也可以良好地烧结而不发生任何裂缝，并且即使在桶处理之后，另外在电介质陶瓷组合物中几乎不发生切屑。因此，即使在大尺寸的情况下，所得的多层陶瓷电容器也具有优异的击穿电压，因此能够满足JIS B的特性。

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