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Inner electrode size and ceramic capacitor made by the size

A technology of ceramic capacitors and internal electrodes, which is applied in the direction of laminated capacitors, fixed capacitor electrodes, fixed capacitor dielectrics, etc., can solve the problems of expensive materials of compound A and compound B, and limit the large-scale use of conductive paste, so as to achieve good appearance, The effect of wide sintering temperature range and reduction of production cost

Inactive Publication Date: 2005-03-23
GUANGDONG FENGHUA ADVANCED TECH HLDG
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Problems solved by technology

[0007] But, the defect of above-mentioned two patent applications is, compound A and compound B all are relatively expensive materials, especially compound B; This can limit the large-scale use of this type of conductive paste greatly in industry

Method used

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Embodiment Construction

[0018] Compared with the prior art, the production process of the base metal nickel inner electrode paste and the chip multilayer ceramic capacitor involved in the present invention is the same. The main difference is that the nickel inner electrode paste needs to be sintered in a protective atmosphere (such as nitrogen) during the production of chip capacitors, and it can be sintered with the ceramic body BaTiO at a high temperature of ≤1450°C. 3 Co-firing, other process requirements are the same. That is, the base metal nickel internal electrode paste can be completed by screen printing and overprinting, and the terminal electrode paste can be completed by dipping and coating.

[0019] In the present invention, nickel powder, ceramic additive, resin (here, ethyl cellulose), and organic solvent are mixed according to the weight percentage in Table 2, and fully ground with a three-roll mill to prepare the internal electrode slurry.

[0020] serial number

Formul...

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Abstract

The invention relates to the inner electrode stuff used in the slabbing multilayer ceramic capacitor and the ceramic capacitor made of the stuff. The abovementioned stuff includes the nickel metal powder, ceramic additive and organic carrier and their amount of weight is as follows: between 35% and 55% of nickel metal powder, between 2% and 20% of ceramic additive and between 35% and 65% of the organic carrier. The ceramic capacitor made of the stuff can solve the problems of craze of the ceramic body and production cost. The stuff in sintered in the protective atmosphere. The stuff doen't melt at the temperature of no more than 1450deg.C, makes no effect to the ceramics, reduces the production cost efficiently and produces the miniaturized products with excellent electrical property, high reliability and large capacity.

Description

technical field [0001] The invention relates to an internal electrode slurry, in particular to the slurry used for preparing chip-type multilayer ceramic capacitors which use base metal nickel as the internal electrode. [0002] The present invention also relates to a chip type multilayer ceramic capacitor, in particular to a chip type multilayer ceramic capacitor made of the above-mentioned slurry as an internal electrode. Background technique [0003] With the technological improvement and development of IT, 3C (communication, electronic machine, computer) and other industries, the requirements for multilayer ceramic chip capacitors tend to be miniaturized, large-capacity, high reliability and low production cost. Development direction, the current composition of electrode paste in capacitors includes noble metal powder, ceramic additives and organic vehicle. The components in the slurry are mixed and then uniformly dispersed by equipment such as a three-roll mill. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G4/008H01G4/12H01G4/30
Inventor 孟淑媛黄耀浩江志坚梁世雄何健华
Owner GUANGDONG FENGHUA ADVANCED TECH HLDG
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