公开(公告)号：US10079106B2

公开(公告)日：2018-09-18

申请号：US15410046

申请日：2017-01-19

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Shoichiro Suzuki ,  Takafumi Okamoto

IPC: H01G4/30 ,  H01G4/12 ,  H01G4/012 ,  C04B35/49 ,  H01G4/232

CPC classification number: H01G4/30 ,  B32B18/00 ,  C04B35/4682 ,  C04B35/49 ,  C04B35/6261 ,  C04B35/62675 ,  C04B35/62685 ,  C04B35/6342 ,  C04B35/638 ,  C04B2235/3215 ,  C04B2235/3232 ,  C04B2235/3234 ,  C04B2235/3236 ,  C04B2235/3239 ,  C04B2235/3244 ,  C04B2235/3248 ,  C04B2235/3249 ,  C04B2235/3251 ,  C04B2235/3255 ,  C04B2235/3258 ,  C04B2235/326 ,  C04B2235/3262 ,  C04B2235/428 ,  C04B2235/442 ,  C04B2235/6025 ,  C04B2235/652 ,  C04B2235/6582 ,  C04B2235/6588 ,  C04B2235/768 ,  C04B2235/79 ,  C04B2235/96 ,  C04B2237/346 ,  C04B2237/348 ,  C04B2237/68 ,  C04B2237/704 ,  H01B3/12 ,  H01G4/012 ,  H01G4/1227 ,  H01G4/1245 ,  H01G4/232

Abstract: A multilayer ceramic capacitor that includes a ceramic laminated body having dielectric layers and internal electrodes at the interfaces between the dielectric layers, and external electrodes on the outer surface of the ceramic laminated body. The dielectric layers contain, as their main constituent, a perovskite-type compound including Ba, Ti, Zr, and M. M is at least one element of Ta, Nb, V, and W. The dielectric layers further contain Mn and Si as additive constituents. With respect to the total amount of Ti, Zr, and M, 40 mol %

公开(公告)号：US20160071649A1

公开(公告)日：2016-03-10

申请号：US14945829

申请日：2015-11-19

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Takafumi Okamoto ,  Shoichiro Suzuki

IPC: H01G4/12 ,  H01G4/012 ,  H01G4/30 ,  C04B35/49 ,  H01G4/248

CPC classification number: H01G4/1245 ,  C04B35/49 ,  C04B2235/3206 ,  C04B2235/3213 ,  C04B2235/3215 ,  C04B2235/3217 ,  C04B2235/3225 ,  C04B2235/3227 ,  C04B2235/3229 ,  C04B2235/3232 ,  C04B2235/3239 ,  C04B2235/3244 ,  C04B2235/3262 ,  C04B2235/3418 ,  C04B2235/6584 ,  C04B2235/768 ,  C04B2235/79 ,  H01G4/012 ,  H01G4/1209 ,  H01G4/1218 ,  H01G4/1236 ,  H01G4/248 ,  H01G4/30

Abstract: A ceramic capacitor having dielectric ceramic layers that include Ba, Re (Re is at least one of La, Ce, Pr, Nd, and Sm), Ti, Zr, M (M is at least one of Mg, Al, Mn, and V), Si, and optionally Sr, where at least some of the Ba, Re, Ti, and Zr and optionally Sr are in the form of a perovskite compound. Respective amounts, expressed as parts by mol, of the elements of the dielectric ceramic layers satisfy, with respect to a total of 100 of the Ti amount and the Zr amount, 0≦a≦20.0 where a is the Sr amount; 0.5≦b≦10.0 where b is the Re amount; 46≦c≦90 where c is the Zr amount; 0.5≦d≦10.0 where d is the M amount; 0.5≦e≦5.0 where e is the Si amount; and 0.990≦m≦1.050 where m is a ratio of a total of the Ba amount, the Sr amount, and the Re amount, to the total of the Ti amount and the Zr amount.

Abstract translation: 具有包括Ba，Re（Re为La，Ce，Pr，Nd和Sm中的至少一种）的电介质陶瓷层的陶瓷电容器，Ti，Zr，M（M为Mg，Al，Mn和 V），Si和任选的Sr，其中至少一些Ba，Re，Ti和Zr以及任选的Sr为钙钛矿化合物的形式。 相对于Ti量和Zr量的总和，相对于介电陶瓷层的元素的摩尔比例，相应的量满足0＆lt; nlE; a＆nlE; 20.0，其中a为Sr量; 0.5＆nlE; b＆nlE; 10.0其中b是Re量; 46＆nlE; c＆nlE; 90其中c是Zr量; 0.5＆nlE; d＆nlE; 10.0其中d是M量; 0.5＆nlE; e＆nlE; 5.0其中e是Si量; 和0.990＆nlE; m＆nlE; 1.050其中m是Ba量，Sr量和Re的总量与Ti量和Zr量的总和的比率。