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Filter electrode and manufacturing method thereof

A technology for filter electrodes and manufacturing methods, which is applied in liquid chemical plating, metal material coating process, coating, etc., and can solve problems such as inability to obtain qualified solderable coatings

Inactive Publication Date: 2020-03-06
SHENZHEN SUNLORD ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to overcome the defects of the prior art, provide a filter electrode and its manufacturing method, solve the problem that the existing filter electrode, especially the multi-terminal filter electrode, cannot Problems with obtaining acceptable solderability plating

Method used

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  • Filter electrode and manufacturing method thereof
  • Filter electrode and manufacturing method thereof
  • Filter electrode and manufacturing method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] A method for processing electrode metallization of a multi-terminal filter, specifically comprising steps 1-6 above.

[0054] The parameters of step 3 are as follows:

[0055] EDTA mass concentration 25%, treatment time 4min;

[0056] The relevant parameters of step 4 are as follows:

[0057] Nickel sulfate 30g / L, sodium hypophosphite 25g / L, sodium citrate 70g / L;

[0058] Glycine 50g / L, sodium hydroxide 18g / L, lead nitrate 30mg / L;

[0059] Temperature 85℃, pH value 4.9, treatment time 12min;

[0060] The relevant parameters of step 5 are as follows:

[0061] Gold sodium sulfite 2g / L, sodium sulfite 15g / L, sodium thiosulfate 12g / L;

[0062] Borax 10g / L, reaction temperature 75°C, pH 7.0.

[0063] The products metallized by this process were tested, and the test results are shown in Table 1.

[0064] Table 1

[0065]

Embodiment 2

[0067] A method for processing electrode metallization of a multi-terminal filter, specifically comprising steps 1-6 above.

[0068] The parameters of step 3 are as follows:

[0069] EDTA mass concentration 40%, treatment time 8min;

[0070] The relevant parameters of step 4 are as follows:

[0071] Nickel sulfate 30g / L, sodium hypophosphite 25g / L, sodium citrate 70g / L;

[0072] Glycine 50g / L, sodium hydroxide 18g / L, lead nitrate 10mg / L;

[0073] Temperature 82℃, pH value 5.1, treatment time 10min;

[0074] The relevant parameters of step 5 are as follows:

[0075] Gold sodium sulfite 2g / L, sodium sulfite 15g / L, sodium thiosulfate 12g / L;

[0076] Borax 10g / L, reaction temperature 75°C, pH 7.0.

[0077] The products metallized by this process were tested, and the test results are shown in Table 2.

[0078] Table 2

[0079]

Embodiment 3

[0081] A method for processing electrode metallization of a multi-terminal filter, specifically comprising steps 1-6 above.

[0082] The parameters of step 3 are as follows:

[0083] EDTA mass concentration 30%, treatment time 10min;

[0084] The relevant parameters of step 4 are as follows:

[0085] Nickel sulfate 30g / L, sodium hypophosphite 25g / L, sodium citrate 70g / L;

[0086] Glycine 50g / L, sodium hydroxide 18g / L, lead nitrate 50mg / L;

[0087] Temperature 90℃, pH value 4.8, treatment time 10min;

[0088] The relevant parameters of step 5 are as follows:

[0089] Gold sodium sulfite 2g / L, sodium sulfite 15g / L, sodium thiosulfate 12g / L;

[0090] Borax 10g / L, reaction temperature 75°C, pH 7.0.

[0091] The products metallized by this process were tested, and the test results are shown in Table 3.

[0092] table 3

[0093]

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Abstract

The invention discloses a filter electrode and a manufacturing method thereof. The manufacturing method of the filter electrode comprises the following steps that S1, a to-be-formed electrode terminalof a filter is treated by using a palladium sulfate activating agent, and an activation layer is formed after the surface of the silver layer of the to-be-formed electrode terminal is reacted; S2, aproduct is placed into a post-immersion liquid to react to remove residual palladium sulfate ions on the surface of the magnet of the filter; S3, the product is placed into a chemical nickel plating solution, so that nickel is deposited on the silver layer to form a nickel layer; and S4, the product is placed into a second chemical plating solution, and a second metal layer is formed on the nickellayer. Before the chemical nickel plating is performed, the product is placed in the post-immersion liquid to react to remove the residual palladium sulfate ions on the surface of the magnet of the filter, and then chemical nickel plating is performed, therefore, the situation that a nickel plating layer is deposited on the magnet when chemical nickel plating is performed can be avoided or significantly reduced, the manufacturing method of the filter electrode is beneficial to making electrodes with uniform plating thickness, excellent welding performance and high reliability, and the productperformance is improved.

Description

technical field [0001] The invention relates to the fabrication of filters, in particular to a filter electrode and a fabrication method thereof. Background technique [0002] The conventional electrode metallization process of existing filter products is silver-dip nickel electroplating and tin plating, and the electrode structure is silver-nickel-tin to meet the solderability requirements of the product. In order to meet the new market demand, the position and structure of the electrodes of filter products have changed greatly compared with the past, which presents the situation that the electrodes are small in size, closely arranged in electrode positions, and some electrodes are not connected to each other. It is difficult to effectively adapt to the above-mentioned electrode changes to obtain qualified electrode coatings by using the traditional electroplating nickel electroplating tin metallization process, and there will be problems such as low plating efficiency, poo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/36C23C18/42C23C18/18
CPCC23C18/1651C23C18/1841C23C18/36C23C18/42
Inventor 许光王清华
Owner SHENZHEN SUNLORD ELECTRONICS
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