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Chemical nickel-plating solution

A technology of electroless nickel plating solution and nickel chloride, applied in liquid electroless plating, metal material coating process, coating and other directions, can solve the problems of low corrosion resistance, poor plating solution covering ability, etc., and achieve good covering ability , Improve the effect of corrosion resistance

Inactive Publication Date: 2011-03-23
钱建峰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main components of ordinary nickel plating solutions are nickel sulfate, sodium chloride and boric acid. Although adding brighteners to ordinary nickel plating solutions can obtain a mirror-bright nickel layer, the plating solution has poor coverage and low corrosion resistance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Embodiment 1: a kind of electroless nickel plating liquid of the present invention, its component comprises nickel sulfate 20g / L, nickel chloride 52g / L, sodium hypophosphite 30g / L, sodium citrate 10g / L, aluminum sulfate 0.5g / L , Brightener 3mL / L and ammonia water 90ml / L. The components of the brightener are stannous chloride and hydrochloric acid. Prepare according to the above formula at 30-40 degrees, and then use ammonia water to adjust the pH value so that the pH value is between 8.5-9.5 to obtain the nickel plating solution.

Embodiment 2

[0010] Embodiment 2: a kind of electroless nickel plating solution of the present invention, its component comprises nickel sulfate 30g / L, nickel chloride 58g / L, sodium hypophosphite 35g / L, sodium citrate 15g / L, aluminum sulfate 0.8g / L , Brightener 5mL / L and ammonia water 100ml / L. The components of the brightener are stannous chloride and hydrochloric acid. Prepare according to the above formula at 30-40 degrees, and then use ammonia water to adjust the pH value so that the pH value is between 8.5-9.5 to obtain the nickel plating solution.

Embodiment 3

[0011] Embodiment 3: a kind of electroless nickel plating liquid of the present invention, its component comprises nickel sulfate 25g / L, nickel chloride 55g / L, sodium hypophosphite 33g / L, sodium citrate 13g / L, aluminum sulfate 0.6g / L , Brightener 4mL / L and ammonia water 95ml / L. The components of the brightener are stannous chloride and hydrochloric acid. Prepare according to the above formula at 30-40 degrees, and then use ammonia water to adjust the pH value so that the pH value is between 8.5-9.5 to obtain the nickel plating solution.

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PUM

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Abstract

The invention discloses a chemical nickel-plating solution which comprises the following components: 20-30g / L of nickel sulphate, 52-58g / L of nickel chloride, 30-35g / L of sodium hypophosphite, 10-15g / L of sodium citrate, 0.5-0.8g / L of aluminum sulphate, 3-5 ml / L of brightening agent and 90-100 ml / L of ammonia water. The invention has the advantages that the plating solution has favourable covering capability, and the corrosion resistance of a clad layer can be improved.

Description

technical field [0001] The invention relates to an electroplating solution, in particular to an electroless nickel plating solution. Background technique [0002] Nickel electroplating is mainly used as a protective decorative coating. The nickel coating is a cathodic coating for the iron substrate and has a high porosity. Therefore, the copper plating layer is used as the bottom layer or multi-layer nickel plating is used. Due to its excellent uniformity, hardness, wear resistance and corrosion resistance and other comprehensive physical and chemical properties, the electroless nickel plating layer is widely used in automobiles, bicycles, clocks, medical equipment, instruments and daily hardware, etc. The main components of ordinary nickel plating solutions are nickel sulfate, sodium chloride and boric acid. Although adding brighteners to ordinary nickel plating solutions can obtain a mirror-bright nickel layer, the plating solution has poor coverage and low corrosion resis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C18/36
Inventor 钱建峰
Owner 钱建峰