A kind of preparation method of multilayer ceramic capacitor

A technology of multilayer ceramics and capacitors, which is applied in the direction of laminated capacitors, capacitors, fixed capacitors, etc., can solve the problems of deterioration of consistency, incomplete deglue, and easy adhesion of ceramic bodies to each other, and achieve good consistency, density and Good dielectric properties

Active Publication Date: 2020-10-09
GUANGDONG FENGHUA ADVANCED TECH HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a method for preparing a multilayer ceramic capacitor, so as to solve the deterioration of the consistency of the current multilayer ceramic capacitor during the sintering process, the incomplete debinding, and the The ceramic body is easy to stick to each other

Method used

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  • A kind of preparation method of multilayer ceramic capacitor
  • A kind of preparation method of multilayer ceramic capacitor
  • A kind of preparation method of multilayer ceramic capacitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] figure 1 It is a flow chart of the preparation method of the multilayer ceramic capacitor of the present invention, as an embodiment of the preparation method of the multilayer ceramic capacitor of the present invention, the preparation method of the multilayer ceramic capacitor of the present embodiment includes the following step:

[0057] Step 1. Mix the ceramic powder doped with the sintering aid, the binder and the organic solvent uniformly to obtain a ceramic slurry, and then use the ceramic slurry as a raw material to prepare a ceramic film.

[0058] In this embodiment, the operation of uniformly mixing the ceramic powder doped with sintering aid, the binder and the organic solvent is as follows: the ceramic powder doped with the sintering aid, the binder and the organic solvent are uniformly mixed by ball milling , The ball milling time is 10~16h.

[0059] The mass ratio of the ceramic powder doped with the sintering aid, the binder and the organic solvent in ...

Embodiment 2

[0104] The preparation method of the multilayer ceramic capacitor described in this embodiment is basically the same as that of Embodiment 1, except that:

[0105] Step 7, placing the green compact with the nickel layer on the surface on the setter for debonding and sintering to obtain a sintered compact.

[0106] The sintered block obtained after sintering is as Figure 6 and Figure 7 As shown, the sintered block is rectangular. The sintered block is preferably a cube. The sintered block includes first and second sides opposite to each other, third and fourth sides opposite to each other, and first and second end faces opposite to each other.

[0107] Two nickel layers are attached to the sintered block in this embodiment, namely a first nickel layer 21 and a second nickel layer 22 . The first nickel layer 21 and the second nickel layer 22 surround and partially cover the first end surface, the second end surface, the first side surface and the second side surface of the...

Embodiment 3

[0114] The preparation method of the multilayer ceramic capacitor described in this embodiment is basically the same as that of Embodiment 1, except that:

[0115] Step 7, placing the green compact with the nickel layer on the surface on the setter for debonding and sintering to obtain a sintered compact.

[0116] The sintered block obtained after sintering is as Figure 8 As shown, the sintered block is rectangular. The sintered block is preferably a cube. The sintered block includes first and second sides opposite to each other, third and fourth sides opposite to each other, and first and second end faces opposite to each other. The six faces of the sintered block are all attached with the third nickel layer 23, and the six faces of the sintered block are respectively partially covered by at least one third nickel layer.

[0117] Step 8, placing the laminated body on the setter, then placing the agglomerate on the setter and mixing it with the laminated body, and then deb...

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Abstract

The invention discloses a preparation method of a multilayer ceramic capacitor. The invention sinters the sintered block and the laminated body, volatilizes the sintering auxiliary agent in the sintered block so as to form a local atmosphere with high volatilization concentration around the laminated body, effectively prevents the excessive volatilization of the sintering auxiliary agent in the laminated body, and makes the sintered ceramic body uniform, compact and consistent. The surface of the sintered block adopted by the invention is provided with a nickel layer, so that adhesion betweenthe sintered ceramic body and the sintered block can be avoided. The ceramic body prepared by the invention is uniform and compact, has good consistency, does not adhere to the sintered block, and iseasy to screen with the sintered block.

Description

technical field [0001] The invention relates to the technical field of electronic components, in particular to a preparation method of a multilayer ceramic capacitor. Background technique [0002] In the preparation process of multilayer ceramic capacitors with copper inner electrodes, low-temperature sintered ceramic materials are required to be co-fired with copper inner electrodes. Sintering is dense at temperatures below the melting point of copper. Since the sintering aids tend to volatilize easily during high-temperature sintering, it is easy to deteriorate the consistency of the ceramic chips loaded on the same setter. Specifically, when ceramic chips loaded on the same setter are sintered at high temperature, ceramic chips with a higher loading density can hinder the volatilization due to the higher concentration of sintering aids in the volatile atmosphere, so more sintering aids remain. The formation of a liquid phase in the ceramic chip promotes the densificatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G4/30H01G4/12
CPCH01G4/1236H01G4/30
Inventor 陆亨卓金丽冯小玲邱小灵安可荣
Owner GUANGDONG FENGHUA ADVANCED TECH HLDG
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