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    • 3. 发明申请
    • MULTILAYER CERAMIC CAPACITOR AND METHOD FOR PRODUCING THE SAME
    • 多层陶瓷电容器及其制造方法
    • US20160358713A1
    • 2016-12-08
    • US15163950
    • 2016-05-25
    • Murata Manufacturing Co., Ltd.
    • AKITAKA DOIShinichi YamaguchiShoichiro Suzuki
    • H01G4/30H01G4/232H01G4/248H01G4/008
    • H01G4/30H01G4/0085H01G4/232
    • A multilayer ceramic capacitor having inner electrodes containing at least one metal selected from Cu, Ag, Pd, Pt, Rh, Ir, Ru, and Os in an amount of 0.1 atom % or more that is dissolved in Ni and Sn to form a solid solution. The percentage of Sn with respect to the total amount of Ni and Sn in near-surface regions each located at a depth of 2 nm from a surface of the inner electrode in contact with an adjacent ceramic dielectric layer is 1.4 or more atom %, and X−Y≧1.0, where X represents the atomic percentage of Sn in the near-surface regions and Y represents the atomic percentage of Sn in mid-thickness regions of the inner electrodes. A method for producing a multilayer ceramic capacitor includes annealing the ceramic multilayer body to increase, in the inner electrodes, the percentage of Sn in the near-surface regions.
    • 一种多层陶瓷电容器,其具有含有选自Cu,Ag,Pd,Pt,Rh,Ir,Ru和Os中的至少一种选自Ni和Sn中的0.1原子%以上的金属的内电极,以形成固体 解。 相对于与相邻的陶瓷电介质层接触的内部电极的表面的距离为2nm的深度的近表面区域的Ni和Sn的总量,Sn的比例为1.4原子%以上, X-Y≥1.0,其中X表示近表面区域中的Sn的原子百分数,Y表示内部电极的中间厚度区域中的Sn的原子百分比。 制造多层陶瓷电容器的方法包括使陶瓷多层体退火,使内电极中的Sn附近的表面积增加。