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Chemical plating black nickel solution

An electroless plating, black nickel technology, applied in liquid electroless plating, metal material coating process, coating and other directions, can solve the problem of inability to deposit black nickel coating, and achieve fine crystal, strong oxidation resistance, and environment-friendly. Effect

Pending Publication Date: 2021-12-03
SHENZHEN SUNWAY COMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the defects of the above-mentioned prior art, the technical problem to be solved by the present invention is: solve the problem that the existing chemical black nickel plating solution cannot continuously and stably deposit any thickness of black nickel coating on the surface of the substrate

Method used

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  • Chemical plating black nickel solution
  • Chemical plating black nickel solution
  • Chemical plating black nickel solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A kind of chemical black nickel plating liquid, is made of the component by concentration in following table 1:

[0024] Table 1

[0025] nickel sulfate 30g / L Zinc sulfate 2g / L malic acid 27g / L Succinic acid 16g / L Ammonium acetate 7g / L Dimethylamine borane 3g / L Thiourea 2×10 -3 g / L

Embodiment 2

[0027] A kind of chemical black nickel plating liquid, is made of the component by concentration in following table 2:

[0028] Table 2

[0029]

[0030]

Embodiment 3

[0032] A kind of chemical black nickel plating liquid, is made of the component by concentration in following table 3:

[0033] table 3

[0034] nickel sulfate 28g / L Zinc sulfate 8g / L Glycine 8g / L Sodium citrate 27g / L Acetic acid 10g / L sodium hypophosphite 30g / L bismuth nitrate 8×10 -3 g / L

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Abstract

The invention relates to the technical field of chemical plating solutions, in particular to chemical plating black nickel solution. The chemical plating black nickel solution comprises the following components of, by concentration, 0.5 g / L to 20 g / L of nickel ions, 0.1 g / L to 10 g / L of zinc ions, 1 g / L to 100 g / L of a complexing agent, 1 g / L to 60 g / L of a reducing agent, 1 g / L to 50 g / L of a buffering agent, 0.1 * 10 <-3 > g / L to 1 g / L of a stabilizing agent, and 0.1 * 10 <-3 > g / L to 5 g / L of a blackening agent. A black nickel plating layer formed by the chemical plating black nickel solution is a deep black plating layer, the maximum deposition speed can reach 12 [mu] m / hr or above, and the black nickel plating layer has the advantages of being flat in surface, fine and smooth in crystal and high in oxidation resistance.

Description

technical field [0001] The invention relates to the technical field of chemical plating solution, in particular to a chemical black nickel plating solution. Background technique [0002] In industries such as instruments, meters, optics, and electronics, it is necessary to coat black film on the surface of parts to reduce the reflectivity of parts and change their thermal properties. [0003] Conventional methods of black coating mainly include three types: chemical blackening of nickel layer, electroless black nickel plating and black nickel electroplating. [0004] Among them, the chemical blackening method of the nickel layer is mainly based on the principle of oxidation blackening of the nickel layer, and the black film formed by it has problems such as low hardness, easy scratching and falling off; and the electroless black nickel plating method and the electroplating black nickel method can be effective Solve the aforementioned problems, but the electroplating black n...

Claims

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Application Information

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IPC IPC(8): C23C18/34C23C18/36
CPCC23C18/34C23C18/36
Inventor 李伟
Owner SHENZHEN SUNWAY COMM
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