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Additive for quick chemical nickel-phosphorus plating of environment-friendly aluminum alloy

A technology of electroless nickel plating and phosphorus additives, applied in liquid chemical plating, metal material coating process, coating and other directions, can solve the problem that the stability of nickel-phosphorus deposition rate has not reached an efficient balance, the plating period is long, and it is easy to fall off. and other problems, to achieve the effect of stabilizing the deposition rate of electroless nickel-phosphorus plating, protecting the environment and promoting human health, and achieving a dense and uniform coating.

Active Publication Date: 2015-04-29
哈尔滨三泳金属表面技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the problem of domestic electroless nickel-phosphorus plating is that the efficiency is not high, and the nickel-phosphorus deposition rate and the stability of the plating solution have not reached a high-efficiency balance. After 10 minutes, the plating speed drops sharply, the average plating speed is slow, the coating is not well bonded, it is easy to fall off, the plating solution is unstable, and it is prone to self-catalyzed decomposition during high-temperature chemical nickel-phosphorus plating. Some of the plating solutions are stable, but nickel -Phosphorus deposition rate is too slow, a plating cycle is too long, the efficiency is not high

Method used

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  • Additive for quick chemical nickel-phosphorus plating of environment-friendly aluminum alloy
  • Additive for quick chemical nickel-phosphorus plating of environment-friendly aluminum alloy
  • Additive for quick chemical nickel-phosphorus plating of environment-friendly aluminum alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Additive ingredients: A component is 30mg / L yttrium oxide, 30mg / L ytterbium oxide, 300mg / L sodium tetraborate, 40ml / L 1:1 dilute sulfuric acid; B component is 4g / L DL-malic acid, 4g / L aminopropionic acid, 4g / L methylene succinic acid, 2g / L ethylenediamine, 40g / L lactic acid; C component is 2mg / L copper sulfate, 2mg / L antimony potassium tartrate, 2mg / L molybdic acid Ammonium, 6mg / L allyl iodide; D component is 2mg / L bis-benzenesulfonimide (BBI), 2mg / L N, N-diethylpropynylamine (DEP), 2mg / L vinyl Sodium sulfonate (VS), 2mg / L sodium allyl sulfonate (SAS).

[0020] When configuring the above-mentioned additives, the four groups A, B, C, and D are firstly prepared into a 0.5-300g / L concentrated solution, and then the amount of each component is calculated according to the volume of the concentrated solution. In the first group, place weighed yttrium oxide, ytterbium oxide, and 1:1 dilute sulfuric acid in the container in sequence, heat and stir until dissolved, then add so...

Embodiment 2

[0027]Additive ingredients: A component is 40mg / L yttrium oxide, 20mg / L ytterbium oxide, 400mg / L sodium tetraborate, 35ml / L 1:1 dilute sulfuric acid; B component is 3g / L DL-malic acid, 2g / L aminopropionic acid, 3g / L methylene succinic acid, 1.5g / L ethylenediamine, 30g / L lactic acid; C component is 1mg / L copper sulfate, 1mg / L antimony potassium tartrate, 3mg / L molybdenum Ammonium acid, 5mg / L allyl iodide; D component is 3mg / L bis-benzenesulfonimide (BBI), 1mg / L N, N-diethylpropynylamine (DEP), 2mg / L ethylene Sodium sulfonate (VS), 3mg / L sodium allyl sulfonate (SAS).

[0028] When configuring the above-mentioned additives, the four groups A, B, C, and D are firstly prepared into a 0.5-300g / L concentrated solution, and then the amount of each component is calculated according to the volume of the concentrated solution. In the first group, place weighed yttrium oxide, ytterbium oxide, and 1:1 dilute sulfuric acid in the container in sequence, heat and stir until dissolved, then ...

Embodiment 3

[0035] Additive ingredients: A component is 20mg / L yttrium oxide, 40mg / L ytterbium oxide, 500mg / L sodium tetraborate, 30ml / L 1:1 dilute sulfuric acid; B component is 5g / L DL-malic acid, 3g / L aminopropionic acid, 5g / L methylene succinic acid, 0.5g / L ethylenediamine, 50g / L lactic acid; C component is 3mg / L copper sulfate, 0.5mg / L antimony potassium tartrate, 4mg / L Ammonium molybdate, 5.5mg / L allyl iodide; D component is 1mg / L bis-benzenesulfonimide (BBI), 3mg / L N, N-diethylpropynylamine (DEP), 3mg / L L sodium vinyl sulfonate (VS), 1mg / L sodium allyl sulfonate (SAS).

[0036] When configuring the above-mentioned additives, the four groups A, B, C, and D are firstly prepared into a 0.5-300g / L concentrated solution, and then the amount of each component is calculated according to the volume of the concentrated solution. The first group will place the weighed yttrium oxide, ytterbium oxide, and 1:1 dilute sulfuric acid in the container in sequence, heat and stir until dissolved, th...

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Abstract

The invention relates to an additive for quick chemical nickel-phosphorus plating of environment-friendly aluminum alloy, which is composed of A, B, C and D components, wherein the A component comprises 20-60mg / L of yttrium oxide, 20-60mg / L of ytterbium oxide, 100-500mg / L of sodium tetraborate, 20-40ml / L of a 1:1 dilute sulphuric acid and the balance of water; the B component comprises a complexing agent and the balance of water; the C component comprises 1-4mg / L of copper sulfate, 0.5-2mg / L of antimony potassium tartrate, 1-5mg / L of ammonium molybdate, 4-10mg / L of allyl iodide, and the balance of water; and the D component comprises an intermediate and the balance of water. By using the additive disclosed by the invention, nickel-phosphorus can be quickly and stably deposited, the plating thickness reaches 5.6-6.0 mu m after plating is performed for 10 minutes, the plating thickness can reach 24.3-25.0 mu m after continuous plating is performed for 1 hour, the average plating speed is more than 24.3 mu m / h, and the plating layer is amorphous, uniform and dense, high in hardness and good in corrosion resistance.

Description

technical field [0001] The invention relates to an environment-friendly aluminum alloy rapid chemical plating nickel-phosphorus additive and a preparation method thereof. Background technique [0002] In recent years, with the rapid rise of my country's electronics industry, automobile manufacturing industry, and aerospace industry, aluminum alloys have been widely used due to their advantages such as high specific strength, good processing performance, and low manufacturing cost, such as internal and external support plates for computers, mobile phone plug-ins, Aircraft wings, spars, skins, etc. In these service environments, aluminum alloys are required to have good corrosion resistance, wear resistance, and welding performance, and surface treatment is required to obtain a certain thickness of nickel-phosphorus alloy coating on the surface of the workpiece. As an emerging surface treatment technology, electroless nickel-phosphorus plating is widely used in the above-menti...

Claims

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Application Information

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IPC IPC(8): C23C18/32
Inventor 董欢欢米艳丽崔永利王丽雪
Owner 哈尔滨三泳金属表面技术有限公司
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