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Ultrafast bright dipping chemical nickel-plating solution

An electroless nickel plating and solution technology, which is applied in the field of electroless nickel plating solution with ultra-fast light emission, can solve the problems of inability to meet product technical requirements and environmental emission requirements.

Inactive Publication Date: 2012-07-04
ENSOO TAIZHOU CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing relatively mature electroless nickel plating process using heavy metals lead and cadmium as stabilizers and brighteners can no longer meet people's requirements, product technical requirements and environmental emission requirements.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0032] Example 1, the contents of each component in the nickel plating solution are as follows:

[0033] Nickel sulfate 5 g / L

[0034] Sodium hypophosphite 30 g / L

[0035] Citric acid 5 g / L

[0036] Lactic acid 35 g / L

[0037] Propionic acid 25 g / L

[0038] Malic acid 4.5 g / L

[0039] Succinic acid 4 g / L

[0040] Tellurium dioxide 1mg / L

[0041] Antimony Potassium Tartrate 35mg / L

[0042] Potassium iodate 15mg / L

[0043] 3-thio-isothiourea propanesulfonic acid inner salt 14mg / L

[0044] Sodium dodecyl sulfate 45mg / L

[0045] The nickel plating solution obtained according to this ratio can produce a fully bright nickel plating layer in about 2 minutes and 40 seconds under the working conditions of solution pH=4.8 and operating temperature of 88°C.

example 2

[0046] Example 2, the content of each component in the nickel plating solution is as follows:

[0047] Nickel sulfate 5 g / L

[0048] Sodium hypophosphite 30 g / L

[0049] Citric acid 5 g / L

[0050] Lactic acid 35 g / L

[0051] Propionic acid 25 g / L

[0052] Malic acid 4.5 g / L

[0053] Succinic acid 4 g / L

[0054] Sodium thiosulfate 0.53mg / L

[0055] Potassium iodate 11mg / L

[0056] Tellurium dioxide 0.8mg / L

[0057] Antimony Potassium Tartrate 38mg / L

[0058] Sodium thiocyanate 0.32mg / L

[0059] Sodium dodecyl sulfate 40mg / L

[0060] The nickel plating solution obtained according to this ratio can produce a fully bright nickel plating layer in about 2 minutes and 55 seconds under the working conditions of solution pH=4.8 and operating temperature of 88°C.

[0061] To sum up, the present invention designs an ultra-fast electroless nickel plating solution for the special performance requirements of the nickel plating layer on the surface of the aluminum heat sink, which...

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PUM

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Abstract

The invention discloses an ultrafast bright dipping chemical nickel-plating solution which comprises nickel salt, a stabilizing agent and a brightening agent, wherein the brightening agent adopts tellurium dioxide. The ultrafast bright dipping chemical nickel-plating solution is designed for meeting the special performance requirements of a nickel-plating layer on the surface of an aluminium heat sink. The ultrafast bright dipping chemical nickel-plating solution generates the full-bright nickel-plating layer in less than three minutes under an appropriate pH value and an appropriate using temperature so as to meet the technical requirements of products.

Description

technical field [0001] The invention relates to an electroless nickel plating solution, in particular to an ultrafast light emitting electroless nickel plating solution. Background technique [0002] Electroless nickel plating, also known as electroless nickel plating, is a surface treatment technology that relies on self-catalyzed chemical reactions to deposit nickel and nickel-based alloy coatings on metal surfaces in a solution containing nickel salts, reducing agents and other auxiliary components. The coating obtained by the above process has the advantages of high hardness, good corrosion resistance, wear resistance, uniform coating thickness, etc., and has been widely used in many fields such as electronics, machinery, chemical industry, mining, and medical treatment. [0003] In the past few decades, great breakthroughs have been made in electroless nickel plating technology, and some long-standing problems, such as bath life and stability, have been preliminarily so...

Claims

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Application Information

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IPC IPC(8): C23C18/36
Inventor 何礼鑫
Owner ENSOO TAIZHOU CHEM