Keramischer Mehrschicht-Chipkondensator und Verfahren zu seiner Herstellung
摘要
In a ceramic multilayer chip capacitor comprising alternately stacked internal electrodes of Ni or Ni alloy and dielectric layers, an oxide layer having a different composition from the dielectric layer is formed on the periphery of each internal electrode. The dielectric layer consists essentially of grains and a grain boundary phase, the percent area of the grain boundary phase being up to 2% of the area cross section of the dielectric layer. The capacitor is prepared by alternately stacking Ni or Ni alloy and a dielectric material in layer form, firing and then heat treating the stack under predetermined oxygen partial pressures. The dielectric material is a barium titanate base oxide material. The capacitor has a long effective life.
申请公布号
DE69027394(T2)
申请公布日期
1997.02.06
申请号
DE1990627394T
申请日期
1990.10.16
申请人
TDK CORP., TOKIO/TOKYO, JP
发明人
NOMURA, TAKESHI, CHUO-KU, TOKYO, JP;IKEDA, MASAAKI, CHUO-KU, TOKYO, JP;SUMITA, SHIGEKAZU, CHUO-KU, TOKYO, JP;NAKANO, YUKIE, CHUO-KU, TOKYO, JP;NISHIYAMA, KOUSUKE, CHUO-KU, TOKYO, JP;ABE, MICHIO, CHUO-KU, TOKYO, JP