公开(公告)号：US20100328844A1

公开(公告)日：2010-12-30

申请号：US12791910

申请日：2010-06-02

申请人： Hitoshi NISHIMURA ,  Noriyuki Inoue ,  Takafumi Okamoto

发明人： Hitoshi NISHIMURA ,  Noriyuki Inoue ,  Takafumi Okamoto

IPC分类号： C04B35/468 ,  H01G4/12

CPC分类号： H01G4/1227 ,  C01G25/006 ,  C01P2004/62 ,  C04B35/462 ,  C04B35/4682 ,  C04B35/47 ,  C04B35/49 ,  C04B35/6261 ,  C04B35/62675 ,  C04B35/62685 ,  C04B2235/3236 ,  C04B2235/442 ,  C04B2235/5409 ,  C04B2235/6025 ,  C04B2235/6584 ,  C04B2235/785 ,  H01G4/30 ,  Y10T29/435

摘要： A laminated ceramic capacitor is provided which is excellent in reliability even when its dielectric ceramic layers thinned. For a dielectric ceramic in a laminated ceramic capacitor, a ceramic is used which includes a main component containing a barium titanate based composite oxide represented by the general formula: (Ba1-h-m-xCahSrmRex)k(Ti1-n-yZrnMy)O3, where Re is La or the like, M is Mg or the like, and the respective relationships of 0.05≦x≦0.50, 0.02≦y≦0.3, 0.85≦k≦1.05, 0≦h≦0.25, 0≦m≦0.50, and 0≦n≦0.40 are satisfied; and an accessory component as a sintering aid, wherein the average grain diameter of crystal grains in a sintered body is 0.6 μm or less.

摘要翻译： 提供了一种叠层陶瓷电容器，即使其电介质陶瓷层变薄，其可靠性也优异。 对于层压陶瓷电容器中的电介质陶瓷，使用陶瓷，其包含含有由通式（Ba1-hm-xCahSrmRex）k（Ti1-n-yZrnMy）O3表示的钛酸钡基复合氧化物的主要成分，其中 Re为La等，M为Mg等，各自的关系为0.05≤n1E; x＆nlE; 0.50,0.02＆lt; 1; y＆nlE; 0.3,0.85＆lt; 1; k＆nlE; 1.05,0和nlE; h＆nlE; 0.25,0和nlE; m＆ 0.50和0＆nlE; n＆nlE; 0.40; 作为烧结助剂的辅助成分，烧结体的晶粒的平均粒径为0.6μm以下。