Unlock instant, AI-driven research and patent intelligence for your innovation.

Medium for copper electrode ceramic capacitor and preparation method thereof

A technology of ceramic capacitors and copper electrodes, which is applied in the dielectric field of capacitors, can solve the problems of low dielectric loss, inability to meet high dielectric constant, performance deterioration of ceramic capacitors, etc., and achieve the effect of low loss

Active Publication Date: 2015-05-20
汕头保税区松田电子科技有限公司
View PDF6 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the existing ceramic capacitor dielectrics are easily reduced to semiconductors in neutral or reducing atmospheres, so that the performance of ceramic capacitors is seriously deteriorated
[0005] In summary, the existing ceramic capacitor dielectrics cannot simultaneously meet the requirements of high dielectric constant, low dielectric loss, high withstand voltage, environmental protection, and suitability for copper electrodes.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Medium for copper electrode ceramic capacitor and preparation method thereof
  • Medium for copper electrode ceramic capacitor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] First, BaTiO was synthesized by a solid-phase method 3 , MgTiO 3 , CaZrO 3 , ZrTiO 4 、Ba 4 LiNb 3 o 12 .

[0037] BaTiO 3 Prepared by the following process: equipped with BaCO at a molar ratio of 1:1 3 and TiO 2 , then for BaCO 3 and TiO 2 Grind and mix well; BaCO 3 and TiO 2 The mixed material was put into an alumina crucible and kept at 1260°C for 120 minutes to obtain BaTiO 3 . BaTiO 3 After cooling, grind and pass through a 200-mesh sieve for later use.

[0038] MgTiO 3 The following process is used to prepare: equip MgCO with a molar ratio of 1:1 3 and TiO 2 , then for MgCO 3 and TiO 2 Grind and mix well; then MgCO 3 and TiO 2 The mixed material was put into an alumina crucible and kept at 1300°C for 120 minutes to obtain MgTiO 3 . The obtained MgTiO 3 After cooling, grind and pass through a 200-mesh sieve for later use.

[0039] CaZrO 3 Prepared by the following process: equip CaCO with a molar ratio of 1:1 3 and ZrO 2 , then for CaCO ...

Embodiment 2

[0057] In this example, BaTiO 3 , MgTiO 3 , CaZrO 3 , ZrTiO 4 、Ba 4 LiNb 3 o 12 The preparation process is the same as in Example 1.

[0058] In this embodiment, the preparation method of the medium that can be used for copper electrode ceramic capacitors includes the following steps in sequence:

[0059] (1) Equipped with BaTiO in proportion 3 , MgTiO 3 , CaZrO 3 , ZrTiO 4 、Co 2 o 3 , Y 2 o 3 , V 2 o 5 and Ba 4 LiNb 3 o 12 ;

[0060] With reference to Table 1, the weight percentages of various raw materials equipped are as follows: BaTiO 3 54%, MgTiO 3 4%, CaZrO 3 20%, ZrTiO 4 12%, Co. 2 o 3 1%, Y 2 o 3 1%, V 2 o 5 1%, Ba 4 LiNb 3 o 12 7%;

[0061] (2) The BaTiO prepared in step (1) 3 , MgTiO 3 , CaZrO 3 , ZrTiO 4 、Co 2 o 3 , Y 2 o 3 , V 2 o 5 and Ba 4 LiNb 3 o 12 Pulverize and mix evenly to obtain a mixture;

[0062] In this embodiment, a planetary ball mill is used to carry out ball milling on the prepared r...

Embodiment 3

[0073] In this example, BaTiO 3 , MgTiO 3 , CaZrO 3 , ZrTiO 4 、Ba 4 LiNb 3 o 12 The preparation process is the same as in Example 1.

[0074] In this embodiment, the preparation method of the medium that can be used for copper electrode ceramic capacitors includes the following steps in sequence:

[0075] (1) Equipped with BaTiO in proportion 3 , MgTiO 3 , CaZrO 3 , ZrTiO 4 、Co 2 o 3 , Y 2 o 3 , V 2 o 5 and Ba 4 LiNb 3 o 12 ;

[0076] With reference to Table 1, the weight percentages of various raw materials equipped are as follows: BaTiO 3 91%, MgTiO 3 1%, CaZrO 3 4%, ZrTiO 4 3%, Co. 2 o 3 0.1%, Y 2 o 3 0.1%, V 2 o 5 0.1%, Ba 4 LiNb 3 o 12 0.7%;

[0077] (2) The BaTiO prepared in step (1) 3 , MgTiO 3 , CaZrO 3 , ZrTiO 4 、Co 2 o 3 , Y 2 o 3 , V 2 o 5 and Ba 4 LiNb 3 o 12 Pulverize and mix evenly to obtain a mixture;

[0078] In this embodiment, a planetary ball mill is used to carry out ball milling on the prep...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a medium for a copper electrode ceramic capacitor. The medium is characterized by being prepared from the following raw materials in percentage by weight: 54-91% of BaTiO3, 1-5% of MgTiO3, 4-20% of CaZrO3, 3-12% of ZrTiO4, 0.1-1% of Co2O3, 0.03-1.0% of Y2O3, 0.1-1.5% of V2O5 and 0.5-8.5% of Ba4LiNb3O12. The invention further provides a preparation method of the medium for a copper electrode ceramic capacitor. The medium for a copper electrode ceramic capacitor provided by the invention is high in dielectric constant, high in withstand voltage, low in dielectric loss, high in stability, free of environmental pollution in preparation and application processes, capable of greatly reducing the cost of the copper electrode ceramic capacitor, and is suitable for being used for preparing monolithic ceramic capacitors and multilayer chip ceramic capacitors.

Description

technical field [0001] The invention relates to a capacitor dielectric, in particular to a dielectric that can be used in copper electrode ceramic capacitors and a preparation method thereof. Background technique [0002] Color TV, computer, communication, aerospace, missile, navigation and other fields urgently need ceramic capacitors with high breakdown voltage, good temperature stability, high reliability, miniaturization and large capacity. In order to realize the miniaturization and large capacity of ceramic capacitors, the medium of ceramic capacitors is required to have a high dielectric constant; in order to achieve a high breakdown voltage of ceramic capacitors, the dielectric of ceramic capacitors is required to have a high withstand voltage; at the same time, as people are concerned about their health And the increasing emphasis on environmental protection requires that the medium of ceramic capacitors will not cause harm to the human body and the environment duri...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C04B35/468C04B35/622
Inventor 林榕胡勇黄瑞南黄新友黄哲
Owner 汕头保税区松田电子科技有限公司