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Glass powder applicable to NPO ceramic body as well as preparation method and application of glass powder

A technology of glass powder and porcelain body, which is applied in the field of glass powder and its preparation, can solve problems such as microcracks, and achieve the effects of preventing internal microcracks, good connection, and low viscosity at high temperature

Active Publication Date: 2014-12-10
JIANGSU HOYI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] This is because after the NPO ceramic body is sintered, there is a gap between the nickel electrode and the medium, and the hydrogen gas precipitated during electroplating will enter the gap, expand and explode, resulting in internal micro-cracks

Method used

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  • Glass powder applicable to NPO ceramic body as well as preparation method and application of glass powder
  • Glass powder applicable to NPO ceramic body as well as preparation method and application of glass powder
  • Glass powder applicable to NPO ceramic body as well as preparation method and application of glass powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A kind of glass frit suitable for NPO ceramic body, its composition is: B 2 o 3 20wt%, BaO 35wt%, ZnO 10wt%, SiO 2 10wt%, CaO 10wt%, ZrO 2 10wt%, and 2wt% TiO 2 and 3wt% Co 2 o 3 .

[0029] The glass powder is used to make copper paste for NPO ceramic body, and the composition of the copper paste is: 65wt% of copper powder, 10wt% of glass powder, and 25wt% of binder.

Embodiment 2

[0031] A kind of glass frit suitable for NPO ceramic body, its composition is: B 2 o 3 30wt%, BaO 25wt%, ZnO 20wt%, SiO 2 10wt%, CaO 10wt%, ZrO 2 1wt%, and 2wt% Co 2 o 3 and 2wt% SnO 2 .

[0032] The glass powder is used to make copper paste for NPO ceramic body, the composition of the copper paste is: 66wt% of copper powder, 9wt% of glass powder, and 25wt% of binder.

Embodiment 3

[0034] A kind of glass frit suitable for NPO ceramic body, its composition is: B 2 o 3 40wt%, BaO 15wt%, ZnO 30wt%, SiO 2 1wt%, CaO 10wt%, ZrO 2 3wt%, and 1wt% TiO 2 .

[0035] The glass powder is used to make copper paste for NPO ceramic bodies, the composition of the copper paste is: 67wt% of copper powder, 7wt% of glass powder, and 26wt% of binder.

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PUM

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Abstract

The invention discloses glass powder applicable to an NPO ceramic body. The glass powder comprises the following components in percentage by weight: 20-40wt% of B2O3, 15-35wt% of BaO, 10-30wt% of ZnO, 1-10wt% of SiO2, 1-10wt% of CaO, 1-10wt% of ZrO2 as well as 1-5wt% of one or more of TiO2, Co2O3 and SnO2. By virtue of the NPO product matched with copper slurry prepared from the glass powder disclosed by the invention, the problem of internal microcracking during a test can be well solved.

Description

technical field [0001] The invention relates to a glass powder and its preparation method and application, in particular to a glass powder suitable for NPO porcelain body and its preparation method and application. Background technique [0002] Among multilayer chip ceramic capacitors (MLCC), MLCC products with NPO (the first type of MLCC capacitor with high frequency characteristics) characteristics are more sensitive. If the copper terminal paste does not match well with the NPO ceramic body, after the product is fired, electroplated, and tested, there will be internal microcracks in the defective TV products that are sorted out. figure 1 shown. From figure 1 Cracks can be clearly seen inside the product. [0003] This is because after the NPO ceramic body is sintered, there is a gap between the nickel electrode and the medium, and the hydrogen gas precipitated during electroplating will enter the gap, expand and explode, resulting in internal microcracks. The solution...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/626C04B35/63
Inventor 蒋丽佳
Owner JIANGSU HOYI TECH
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