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A kind of inner electrode silver paste for inductance and preparation method thereof

An internal electrode and inductance technology, applied in cable/conductor manufacturing, transformer/inductor coil/winding/connection, conductive materials dispersed in non-conductive inorganic materials, etc., can solve the problem of high DC resistance RDC, porcelain cracking, Electrode cracking and other problems, to achieve the effect of improving the sintering compactness, the integrity of the printed electrode, and improving the bonding force between layers

Active Publication Date: 2019-04-05
肇庆市辰业电子有限公司
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  • Abstract
  • Description
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Problems solved by technology

However, while the domestic manufacturers of stacked inductors are constantly increasing the volume, there are two problems that have been bothering us: one is the quality problem of ceramic body cracking and electrode cracking after firing; one is the technical problem of high DC resistance RDC, and these two problems All these problems need to cooperate with the development of its main raw material---internal electrode silver paste to solve

Method used

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  • A kind of inner electrode silver paste for inductance and preparation method thereof
  • A kind of inner electrode silver paste for inductance and preparation method thereof

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Embodiment Construction

[0007] The gist of the present invention is to obtain the silver paste for internal electrodes with excellent performance and low resistance by controlling the reasonable ratio of crystalline silver powder, silver micropowder, silver oxide powder and organic carrier, and selecting suitable particle size. After lamination, the silver paste and the porcelain body are densely bonded after debinding and firing, and there is no problem of external cracking of the ceramic and internal cracking of the electrode. At the same time, it reduces the resistivity of silver paste and the DC resistance of inductive products. The proportions mentioned in the examples are not limitations of the present invention, and the selection of other silver paste formulations under the concept of the present invention may be adapted to local conditions and have no substantial impact on the results.

[0008] The formula design of the best embodiment of the present invention is as shown in table 1:

[0009...

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Abstract

The invention relates to the technical field of electronic materials for electronic components, and particularly relates to an inner electrode silver paste for an inductor and a preparation method. The inner electrode silver paste comprises the following components in percentage by weight: 35%-60% of crystal silver powder, 15%-40.5% of silver micro powder, 5%-15% of silver oxide powder, 0.01%-0.5% of glass or an inorganic oxide, 1%-5% of ethyl cellulose, 1%-5% of one or more alcoholic solvents, 1%-10% of one or more ester solvents, 0.5%-5% of rosin, wherein the sum of the weight percentages of the components is 100%. The grain diameter of the crystal silver powder is 1.0-3.0 micrometers, and the grain diameter of the silver micro powder is 0.05-0.15 micrometer; the grain diameter of silver oxide is 0.05-0.15 micrometer; and the grain diameter of the glass or inorganic oxide is 0.1-5 micrometers. The silver paste is compactly combined with a porcelain body through glue removing and sintering, and problems of external cracks of the porcelain body and internal cracks of the electrode do not occur. The silver paste is low in resistivity, and an inductance product produced by adopting the silver paste is small in DC resistance RDC.

Description

technical field [0001] The invention relates to the technical field of electronic materials used in electronic components, in particular to an inner electrode silver paste for an inductor and a preparation method thereof. Background technique [0002] With the rapid development of electronic information industries such as mobile phones and computers, electronic components are constantly developing towards miniaturization, light weight, high performance and high reliability. In recent years, with the continuous development and maturity of the domestic technology of laminated inductors, their consumption and output have shown a trend of rapid development in China. However, while the domestic manufacturers of stacked inductors are constantly increasing the volume, there are two problems that have been bothering us: one is the quality problem of ceramic body cracking and electrode cracking after firing; one is the technical problem of high DC resistance RDC, and these two proble...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B1/16H01B1/22H01B13/00H01F27/29
CPCH01B1/16H01B1/22H01B13/00H01F27/29
Inventor 张韶鸽杨玉华
Owner 肇庆市辰业电子有限公司
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