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Manufacturing method of laminated ceramic capacitor, and laminated ceramic capacitor

一种陶瓷电容器、制造方法的技术，应用在电容器制造、叠层电容器、固定电容器电介质等方向，能够解决电介质陶瓷介电常数降低、Re偏析增多、可靠性降低等问题，达到抑制飞散、抑制孔隙和间隙、抑制收缩的效果

Active Publication Date: 2012-05-23
MURATA MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Therefore, when a large amount of heat energy is applied to moderately dissolve Re, the solid solution of Re proceeds, but the segregation of Re also increases, and the reliability of thin-layer multilayer ceramic capacitors decreases on the contrary.
[0012] In addition, when the content of Re is greatly increased, the dielectric constant of the dielectric ceramic may decrease

Method used

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  • Manufacturing method of laminated ceramic capacitor, and laminated ceramic capacitor
  • Manufacturing method of laminated ceramic capacitor, and laminated ceramic capacitor
  • Manufacturing method of laminated ceramic capacitor, and laminated ceramic capacitor

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Embodiment Construction

[0035] refer to figure 1 , the structure of the multilayer ceramic capacitor 1 used in the present invention will be described.

[0036]The multilayer ceramic capacitor 1 includes a laminated body 2 as a component main body. The laminated body 2 includes a plurality of stacked dielectric ceramic layers 3 and a plurality of internal electrodes 4 and 5 formed along specific interfaces between the dielectric ceramic layers 3 . The respective ends of the plurality of internal electrodes 4 and 5 are respectively exposed on one and the other end faces 6 and 7 of the laminated body 2, and the respective ends of these internal electrodes 4 and the respective ends of the internal electrodes 5 are electrically connected to each other, respectively. The external electrodes 8 and 9 are formed in a manner.

[0037] When manufacturing such a laminated ceramic capacitor 1 , first, a laminated body 2 in an unprocessed state is produced by a well-known method of laminating and printing ceram...

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Abstract

Provided is a laminated ceramic capacitor, wherein reliability is not lost even when dielectric ceramic layers and internal electrodes are made to be thinner layers. Heat treatment is conducted with a temperature profile starting from room temperature and ending at maximum temperature, and having an average temperature-rising rate of 40 DEG C / second or more, when firing, in a raw-state, a laminated body (2), which is provided with laminated ceramic layers (3) that contain dielectric ceramic raw-material powder, and internal electrodes (4 and 5), and which is for the laminated ceramic capacitor (1). BaTiO3 is the main ingredient of the dielectric ceramic raw-material powder, and Re (Re is at least one type selected from the group consisting of Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu) is contained as an accessory ingredient, with the Re content made to be 0.3-3 parts by mole for 100 parts by mole of the main ingredient.

Description

technical field [0001] The present invention relates to a method for manufacturing a multilayer ceramic capacitor and a multilayer ceramic capacitor, and particularly relates to improvement of firing conditions in the method for producing a multilayer ceramic capacitor, and BaTiO used for the multilayer ceramic capacitor suitable for the improved firing conditions 3 An improvement in the composition of the dielectric ceramic. Background technique [0002] In multilayer ceramic capacitors, in order to achieve miniaturization (thinning), it is effective not only to reduce the thickness of the dielectric ceramic layers but also to reduce the thickness of the internal electrodes. However, when the internal electrodes are thinned, electrode breakage tends to occur as a result of the firing step for sintering the untreated laminate. As a technique capable of suppressing the breakage of the electrode, for example, the following techniques have been proposed. [0003] In Japanese ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G4/12H01G4/30
CPCH01G13/00H01G4/1227H01G4/12H01G4/30
Inventor 石原雅之平田阳介辻英昭
Owner MURATA MFG CO LTD
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