Metallized ferrite magnetic core and preparation method thereof

A ferrite core and metallization technology, applied in inductors with magnetic cores, metal material coating processes, transformer/inductor cores, etc. High consumption, poor performance and other problems, to achieve the effects of no economy, fast film formation by sputtering, and low cost

Active Publication Date: 2016-03-16
SHENZHEN KANGCI ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a metallized ferrite core and its preparation method to solve the problem of high energy co

Method used

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  • Metallized ferrite magnetic core and preparation method thereof
  • Metallized ferrite magnetic core and preparation method thereof
  • Metallized ferrite magnetic core and preparation method thereof

Examples

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Example Embodiment

[0038] see Figure 4 , the embodiment of the present invention provides a method for preparing the metallized ferrite core, comprising the following steps:

[0039] (1) Take the ferrite core, clean and dry the ferrite core, the ferrite core is provided with an electrode region;

[0040] The cleaning operation is to remove powder and dirt on the surface of the magnetic core.

[0041] Preferably, the cleaning step specifically includes: soaking in alcohol for 5-10 minutes, then ultrasonically cleaning at 40-60°C for 10-20 minutes, then rinsing with water for 1-3 minutes, and then ultrasonically cleaning at room temperature for 10-20 minutes. 20 minutes, and finally rinse with 50-80 ℃ hot water for 1-3 minutes.

[0042] The drying operation is to remove moisture on the surface of the magnetic core, and can be performed in an oven. Preferably, the temperature of the oven is 130-170° C., and the time is 10-20 minutes.

[0043] (2) Prepare a metal coating on the surface of the e...

Example Embodiment

[0052] Embodiment one

[0053] A preparation method of the above metallized ferrite core, comprising the following steps:

[0054] (1) Take the ferrite core, clean and dry the ferrite core, the ferrite core is provided with an electrode region;

[0055] The cleaning operation is as follows: put the ferrite core in a stainless steel mesh basket, soak it in alcohol for 5 minutes, then ultrasonically clean it at 50°C for 10 minutes; then rinse it with water for 1 minute; then clean it ultrasonically at room temperature for 20 minutes; Finally, rinse with hot water for 2 minutes; blow dry with a hot blower, and then lay it flat on the grid tray to dry;

[0056] The drying operation is carried out in an oven. Specifically, spread the magnetic cores flat on the grid tray and put them into the oven. The temperature of the oven is set at 150°C for 15 minutes; it can be dried until there is no water vapor;

[0057] (2) Prepare a metal coating on the surface of the electrode region by...

Example Embodiment

[0062] Embodiment two

[0063] A preparation method of the above metallized ferrite core, comprising the following steps:

[0064] (1) Take the ferrite core, clean and dry the ferrite core, the ferrite core is provided with an electrode region;

[0065] The cleaning operation is as follows: put the ferrite core in a stainless steel mesh basket, soak it in alcohol for 10 minutes, then ultrasonically clean it at 40°C for 20 minutes; then rinse it with water for 2 minutes; then clean it ultrasonically at room temperature for 15 minutes; Finally, rinse with hot water for 3 minutes; blow dry with a hot blower, and then lay it flat on the grid tray to dry;

[0066] The drying operation is carried out in an oven. Specifically, spread the magnetic cores flat on the grid tray and put them into the oven. The temperature of the oven is set at 170°C for 10 minutes; it can be dried until there is no water vapor;

[0067] (2) Prepare a metal coating on the surface of the electrode region ...

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Abstract

The embodiment of the invention provides a metallized ferrite magnetic core, which comprises a ferrite magnetic core, wherein an electrode region is arranged on the ferrite magnetic core; a metal coating which is used for being connected with other devices is formed in the electrode region; the metal coating comprises a chromium layer, a nickel-copper alloy layer and a silver layer, which are sequentially formed on the surface of the electrode region in a stacked manner; and the chromium layer, the nickel-copper alloy layer and the silver layer are prepared in a magnetron sputtering manner. The metal coating of the metallized ferrite magnetic core provided by the invention has the advantages of high adhesive force, high heat resistance, good weldability, low cost and the like. The embodiment of the invention further provides a preparation method of the metallized ferrite magnetic core. The method is high in sputtering film-forming speed, free of pollution in the whole process and low in cost.

Description

technical field [0001] The invention relates to the field of patch power magnetic core processing, in particular to a metallized ferrite magnetic core and a preparation method thereof. Background technique [0002] Under the current tide of smart phones and tablet computers, the requirements for miniaturization and patching of electronic components are becoming stronger and stronger, and power inductors are the first to bear the brunt. Moreover, the environmental protection requirements of products are getting higher and higher, and all products must pass various tests such as ROSH and halogen. [0003] The traditional ferrite chip power core metallization process mainly includes the processes of dipping the core end with silver paste, high-temperature sintering, electroplating nickel, tin, etc., which has the disadvantages of high energy consumption, large pollution, high cost, and poor reliability. The current construction of an energy-saving society is contrary to the de...

Claims

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Application Information

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IPC IPC(8): H01F27/24H01F1/10H01F17/04H01F41/02C23C14/35C23C14/18
CPCC23C14/185C23C14/352C23C28/021H01F1/10H01F17/04H01F27/24H01F41/02
Inventor 朱小东
Owner SHENZHEN KANGCI ELECTRONICS CO LTD
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