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Environment-friendly chemical nickel deposition solution

An electroless nickel deposition, environment-friendly technology, applied in the field of electroless plating, can solve problems such as environmental impact, achieve the effects of reducing concentration, improving stability, reducing burden and impact

Inactive Publication Date: 2018-07-06
成功环保科技(南通)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Electroless nickel precipitation usually uses chemical nickel precipitation solution. In order to stabilize the solution and make the coating have a better bright effect, the chemical nickel precipitation solution generally contains a certain amount of lead ions, ammonia water, and amine substances, which have a greater impact on the environment. and burden

Method used

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  • Environment-friendly chemical nickel deposition solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] An environment-friendly chemical nickel deposition solution, every 1 liter of the environment-friendly chemical nickel deposition solution comprises the following components:

[0044] Nickel salt 50g

[0045] Reducing agent 10g

[0046] Complexing agent 5g

[0047] Stabilizer 2.0ppm

[0048] Adjust the pH value of the system to 4.2-5.5 with a buffer,

[0049] The balance is deionized water.

[0050] The nickel salt is nickel sulfate, the reducing agent is sodium hypophosphite, the complexing agent is lactic acid, the stabilizer is antimony potassium tartrate, an appropriate amount of deionized water is added, the pH value of the system is adjusted to 4.2-5.5 with glacial acetic acid, and the Make up to 1 liter.

Embodiment 2

[0052] An environment-friendly chemical nickel deposition solution, every 1 liter of the environment-friendly chemical nickel deposition solution comprises the following components:

[0053] Nickel salt 25g

[0054] Reductant 50g

[0055] Complexing agent 50g

[0056] Stabilizer 1.0ppm

[0057] Adjust the pH value of the system to 4.2-5.5 with a buffer,

[0058] The balance is deionized water.

[0059] The nickel salt is nickel chloride, the reducing agent is sodium hypophosphite, the complexing agent is tartaric acid, the stabilizer is bismuth citrate, an appropriate amount of deionized water is added, the pH value of the system is adjusted to 4.2-5.5 with glacial acetic acid, Make up to 1 liter.

Embodiment 3

[0061] An environment-friendly chemical nickel deposition solution, every 1 liter of the environment-friendly chemical nickel deposition solution comprises the following components:

[0062] Nickel salt 5g

[0063] Reducing agent 5g

[0064] Complexing agent 15g

[0065] Stabilizer 0.5ppm

[0066] Adjust the pH value of the system to 4.2-5.5 with a buffer,

[0067] The balance is deionized water.

[0068] The nickel salt is nickel carbonate, the reducing agent is potassium hypophosphite, the complexing agent is citric acid, the stabilizing agent is bismuth trioxide, an appropriate amount of deionized water is added, and the pH value of the system is adjusted to 4.2 to 5.5 with glacial acetic acid. Water to make up to 1 liter.

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PUM

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Abstract

The invention provides an environment-friendly chemical nickel deposition solution. The environment-friendly chemical nickel deposition solution is prepared from nickel salt, a reducing agent, a complexing agent, a buffering agent, a stabilizing agent and water, wherein the concentration of the nickel salt is 5-50 g / L, the concentration of the reducing agent is 5-50 g / L, the concentration of the complexing agent is 5-50 g / L, the concentration of the stabilizing agent is 0.5-2.0 ppm, and the system pH value is regulated to 4.2-5.5 through the buffering agent. The environment-friendly chemical nickel deposition solution does not contain ammonia or nitrogen, and the content of lead ions is lower than 300 ppm, so that the burden and influence on the environment are greatly reduced; and meanwhile, a nickel-plated layer is stable and good in brightness, and the environment-friendly chemical nickel deposition solution is excellent in electric conductivity and suitable for chemical nickel plating of PCBs, FPCs, semiconductor wafers and the like.

Description

technical field [0001] The invention relates to the technical field of electroless plating, in particular to an environment-friendly electroless nickel deposition solution. Background technique [0002] Electroless nickel plating is a nickel plating process. It is a surface treatment method that attaches metal ions to the plated object without electrolysis. It is often used in the solderability surface coating process of PCB and FCP. It can give printing The printed circuit board provides a coating that can be welded, conducted, and dissipated in one, and can also be used in conjunction with other surface coating processes. [0003] Electroless nickel precipitation usually uses chemical nickel precipitation solution. In order to stabilize the solution and make the coating have a better bright effect, the chemical nickel precipitation solution generally contains a certain amount of lead ions, ammonia water, and amine substances, which have a greater impact on the environment....

Claims

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Application Information

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IPC IPC(8): C23C18/36
CPCC23C18/36
Inventor 黄雷
Owner 成功环保科技(南通)有限公司
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