A metal-coated composite powder electroplating process

An electroplating process and composite powder technology, applied in metal processing equipment, transportation and packaging, coating, etc., can solve the problems of rough coating, low deposition rate, powder agglomeration, etc., and achieve convenient recycling, fast electrodeposition speed, Coating smooth effect

Active Publication Date: 2020-04-10
KAIFENG CARBON CO LTD OF CHINA PINGMEI SHENMA GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the purpose of the present invention is to provide a metal-coated composite powder electroplating process to solve the technical problems of low deposition rate, rough coating, non-dense coating, and powder agglomeration in the existing process

Method used

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  • A metal-coated composite powder electroplating process
  • A metal-coated composite powder electroplating process
  • A metal-coated composite powder electroplating process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1: A metal-coated composite powder electroplating process. This example takes the preparation of copper-coated graphite powder as an example to illustrate, as shown in image 3 As shown, the specific operation steps are as follows:

[0030] Pre-plating treatment:

[0031] Degreasing: Prepare a degreasing agent containing 150g / L sodium hydroxide, 30g / L sodium carbonate, 35g / L sodium phosphate and water, then add 100g graphite powder to the degreasing agent and stir at 60°C for 30min , and then filter the graphite powder, wash it with deionized water, and dry it for later use.

[0032] Degreasing can reduce the surface tension of the powder when it comes into contact with the plating solution.

[0033] Plating solution preparation: each substance was prepared into a plating solution according to the following contents: copper sulfate 1.1mol / L, sulfuric acid 12mmol / L, glacial acetic acid 20mmol / L, emulsifier OP-10 1.5g / L, glyoxylic acid 20g / L.

[0034] plating: ...

Embodiment 2

[0039] Example 2: A metal-coated composite powder electroplating process. This example takes the preparation of copper-coated graphite powder as an example to illustrate, as image 3 As shown, the specific operation steps are as follows:

[0040] Pre-plating treatment:

[0041] Degreasing: Prepare a degreasing agent containing 150g / L sodium hydroxide, 30g / L sodium carbonate, 35g / L sodium phosphate and water, then add 100g graphite powder to the degreasing agent and stir at 60°C for 30min , and then filter the graphite powder, wash it with deionized water, and dry it for later use.

[0042] Degreasing can reduce the surface tension of the powder when it comes into contact with the plating solution.

[0043] Plating solution preparation: each substance was prepared into a plating solution according to the following contents: copper sulfate 1.2mol / L, sulfuric acid 8mmol / L, glacial acetic acid 25mmol / L, emulsifier OP-10 0.8g / L, glyoxylic acid 26g / L.

[0044] plating:

[0045] ...

Embodiment 3

[0049] Example 3: A metal-coated composite powder electroplating process. This example takes the preparation of copper-coated graphite powder as an example to illustrate, as image 3 As shown, the specific operation steps are as follows:

[0050] Pre-plating treatment:

[0051] Degreasing: Prepare a degreasing agent containing 150g / L sodium hydroxide, 30g / L sodium carbonate, 35g / L sodium phosphate and water, then add 100g graphite powder to the degreasing agent and stir at 60°C for 30min , and then filter the graphite powder, wash it with deionized water, and dry it for later use.

[0052] Degreasing can reduce the surface tension of the powder when it comes into contact with the plating solution.

[0053] Plating solution preparation: each substance was prepared into a plating solution according to the following contents: copper sulfate 1.0mol / L, sulfuric acid 6mmol / L, glacial acetic acid 19mmol / L, emulsifier OP-10 0.7g / L, glyoxylic acid 30g / L.

[0054] plating:

[0055] Ad...

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Abstract

The invention discloses a metal-coated composite powder electroplating process in the technical field of core-shell material production technology, aiming to solve the technical problems of low deposition rate, rough, non-dense coating and powder agglomeration in the existing process; the process includes The following steps are as follows: first prepare the degreasing agent and degrease the conductive powder and prepare the plating solution; then inject the prepared plating solution and the degreasing conductive powder into the outer cavity of the electroplating tank; then add powder in the inner cavity of the electroplating tank Plating metal; then start the circulating pump to circulate the plating solution and turn on the power for electroplating; finally filter out the powder, wash with water, and passivate. The invention can conveniently and cheaply coat a layer of metal phase on the outside of the conductive powder to form a well-bonded core-shell composite material, and the process of the invention has the advantages of fast deposition rate, smooth and dense coating.

Description

technical field [0001] The invention relates to the technical field of core-shell material production technology, in particular to a metal-coated composite powder electroplating process. Background technique [0002] Metal-coated composite powder is a new type of multi-phase composite powder metallurgy material. It has many varieties and unique properties. It has been widely used in defense industry, machinery manufacturing, chemical industry and other fields. According to different core-shell structures, metal-coated composite powders can be roughly divided into three types, metal-carbon materials, metal-ceramic materials, and metal-metal materials. [0003] The preparation methods of metal-coated composite powder are usually as follows: ball milling method, impregnation method, sol-gel method, co-precipitation method, electroless plating and electroplating method, etc. The ball milling method is simple, and the content of metal in the powder is easy to control, but it is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/02C25D7/00C25D5/08
CPCC25D5/08C25D7/00B22F1/17
Inventor 吴沣陈文来梁冉杜国强康进才王志强陈庆祥
Owner KAIFENG CARBON CO LTD OF CHINA PINGMEI SHENMA GRP
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