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    • 4. 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
    • US20160358712A1
    • 2016-12-08
    • US15163885
    • 2016-05-25
    • Murata Manufacturing Co., Ltd.
    • Akitaka DoiShinichi YamaguchiShoichiro Suzuki
    • H01G4/30H01G4/232H01G4/248H01G4/008
    • H01G4/30H01G4/008H01G4/232
    • A multilayer ceramic capacitor having inner electrodes with a Ni-Metal A alloy, the Metal A being selected from Fe, V, Y, and Cu and dissolved in the Ni to form a solid solution. The percentage of the Metal A with respect to the total amount of Metal A and Ni in near-surface regions 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 XA−YA≧1.0, where XA represents the atomic percentage of Metal A in the near-surface regions and YA represents the atomic percentage of Metal A in mid-thickness regions of the inner electrodes. A method for producing a multilayer ceramic capacitor includes annealing the ceramic multilayer body under specific conditions to thereby increase, in the inner electrodes, the percentage of Metal A in the near-surface regions.
    • 一种具有镍 - 金属A合金的内电极,金属A选自Fe,V,Y和Cu并溶解在Ni中以形成固溶体的多层陶瓷电容器。 相对于与相邻的陶瓷电介质层接触的内部电极的表面2nm处的近表面区域的金属A和Ni的总量,金属A的比例为1.4原子%以上 ,XA-YA≥1.0,其中XA表示近表面区域中的金属A的原子百分比,YA表示内部电极的中间厚度区域中的金属A的原子百分比。 制造多层陶瓷电容器的方法包括在特定条件下退火陶瓷多层体,从而在内电极中增加近表面区域中金属A的百分比。
    • 5. 发明申请
    • MULTILAYER CERAMIC CAPACITOR AND METHOD OF MANUFACTURING MULTILAYER CERAMIC CAPACITOR
    • 多层陶瓷电容器及制造多层陶瓷电容器的方法
    • US20160276102A1
    • 2016-09-22
    • US15171059
    • 2016-06-02
    • Murata Manufacturing Co., Ltd.
    • Shoichiro SuzukiShinichi YamaguchiAkitaka Doi
    • H01G4/008H01G4/30H01G4/232H01G4/12
    • H01G4/008H01G4/0085H01G4/1227H01G4/232H01G4/30
    • A multilayer ceramic capacitor that includes an internal electrode containing at least one kind of metal A selected from the group consisting of In, Ga, Zn, Bi, and Pb and dissolved in Ni to form a solid solution. The internal electrode has a ratio of A of 1.4 atomic percent or more to a total amount of A and Ni in a near-interface region located to a depth of 2 nm from a surface of the internal electrode facing a corresponding ceramic dielectric layer. A relation between a value X of atomic percent representing the ratio of A in the near-interface region and a value Y of atomic percent representing the ratio of A in a central region in a thickness direction of the internal electrode is X−Y≧1.0. Such a multilayer capacitor is formed by annealing a ceramic stack under a predetermined condition to increase the ratio of metal A in the near-interface region of the internal electrode.
    • 一种多层陶瓷电容器,其包括含有选自In,Ga,Zn,Bi和Pb中的至少一种金属A并溶解在Ni中以形成固溶体的内部电极。 内部电极的面积相对于陶瓷电介质层的内部电极的表面的深度为2nm的接近界面区域的A比为1.4原子%以上的A与Ni的总量。 表示近界面区域中的A的比例的原子百分比的值X与表示内部电极的厚度方向的中心区域的A的比率的原子百分比的值Y之间的关系为X-Y≥1.0 。 通过在预定条件下退火陶瓷堆叠来形成这种多层电容器,以增加内部电极的近界面区域中的金属A的比例。