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Chemical nickel solution and preparation method thereof

A technology of chemical nickel and solution, which is applied in the field of chemical plating, can solve the problems of nickel corrosion, uneven nickel surface unit cell, easy cracks on the nickel surface, etc., and achieve low cost, good nickel plating effect and uniform nickel surface unit cell Effect

Pending Publication Date: 2022-05-13
VICTORY GIANT TECH HUIZHOU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problems of severe nickel corrosion, uneven unit cells on the nickel surface, and easy cracks on the nickel surface in the existing chemical nickel solution, the invention provides a chemical nickel solution and a preparation method thereof

Method used

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  • Chemical nickel solution and preparation method thereof
  • Chemical nickel solution and preparation method thereof
  • Chemical nickel solution and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0036] A chemical nickel solution, every liter of chemical nickel solution includes the following composition: nickel salt: nickel ion concentration 4.6g / L; reducing agent: 17g / L; stabilizer: 25mg / L; complexing agent: 5g / L; buffer Agent: 10.5g / L; Plating agent: 1.5g / L; Surfactant: 0.5ml / L; Stress agent: 60mg / L; Water: surplus.

[0037] The nickel salt is one or more of nickel sulfate, nickel chloride and nickel sulfamate.

[0038] The reducing agent is a mixture of sodium hypophosphite and hydroxylamine sulfate, sodium hypophosphite is 12g / L: hydroxylamine sulfate is 4g / L, and the mixing ratio of sodium hypophosphite and hydroxylamine sulfate is 3:1.

[0039] The stabilizer is a compound capable of providing zirconium ions. In some embodiments, the stabilizer is zirconium chloride, which can prevent segregation, which refers to the automatic reduction and precipitation of nickel ions at high temperature.

[0040] The complexing agent is a mixture of taurine and chlorogenic a...

Embodiment 2

[0045] A chemical nickel solution, every liter of chemical nickel solution includes the following composition: nickel salt: nickel ion concentration 5.0g / L; reducing agent: 16g / L; stabilizer: 35mg / L; complexing agent: 3g / L; buffer Agent: 8g / L; Plating agent: 3.5g / L; Surfactant: 0.05ml / L; Stress agent: 58mg / L; Water: surplus.

[0046] The nickel salt is one or more of nickel sulfate, nickel chloride and nickel sulfamate.

[0047] The reducing agent is a mixture of sodium hypophosphite and hydroxylamine sulfate, sodium hypophosphite is 15g / L: hydroxylamine sulfate is 5g / L, and the mixing ratio of sodium hypophosphite and hydroxylamine sulfate is 3:1.

[0048] The stabilizer is a compound capable of providing zirconium ions. In some embodiments, the stabilizer is zirconium chloride, which can prevent segregation, which refers to the automatic reduction and precipitation of nickel ions at high temperature.

[0049] The complexing agent is a mixture of taurine and chlorogenic aci...

Embodiment 3

[0054] A chemical nickel solution, every 1 liter of chemical nickel solution includes the following composition: nickel salt: nickel ion concentration 4.7g / L; reducing agent: 20g / L; stabilizer: 15mg / L; complexing agent: 4g / L; buffer Agent: 6g / L; Plating agent: 0.5g / L; Surfactant: 0.2ml / L; Stress agent: 50mg / L; Water: surplus.

[0055] The nickel salt is one or more of nickel sulfate, nickel chloride and nickel sulfamate.

[0056] The reducing agent is a mixture of sodium hypophosphite and hydroxylamine sulfate, sodium hypophosphite is 13g / L: hydroxylamine sulfate is 4.5g / L, and the mixing ratio of sodium hypophosphite and hydroxylamine sulfate is 3:1.

[0057] The stabilizer is a compound capable of providing zirconium ions. In some embodiments, the stabilizer is zirconium chloride, which can prevent segregation, which refers to the automatic reduction and precipitation of nickel ions at high temperature.

[0058] The complexing agent is a mixture of taurine and chlorogenic ...

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Abstract

The invention discloses a chemical nickel solution and a preparation method thereof. Each liter of the chemical nickel solution comprises the following components: nickel salt with the nickel ion concentration of 4.6-5.0 g / L; 16-20 g / L of a reducing agent; 15 to 35 mg / L of a stabilizer; 3-5 g / L of a complexing agent; 6 to 10.5 g / L of a buffer agent; 0.5 g / L to 3.5 g / L of a plating starting agent; 0.05 ml / L to 0.5 ml / L of a surfactant; a stress agent: 50 to 70 mg / L; and the balance of water. According to the chemical nickel solution, the nickel plating effect is good, unit cells on the nickel surface are uniform, and the conditions of nickel corrosion, non-uniform unit cells on the nickel surface and cracks caused by stress are avoided; the preparation method is easy to operate and low in cost, and the prepared chemical nickel solution has a good nickel plating effect.

Description

technical field [0001] The present application relates to the technical field of electroless plating, in particular to an electroless nickel solution and a preparation method thereof. Background technique [0002] Electroless plating, also known as electroless plating, can also be called self-catalyzed electroplating. The specific process refers to the process in which metal ions in aqueous solution are reduced by reducing agent and precipitated on the surface of solid substrate under certain conditions. Metal plating processes such as nickel plating, copper plating and gold plating are common processes for PCB board production. There are two main ways of nickel plating: electroplating nickel and electroless nickel plating. Electroplating cannot plate the entire surface of workpieces with complex shapes, but electroless plating can plate workpieces of any shape. The electroless nickel plating layer is extremely uniform, almost A profiling effect can be achieved. The electr...

Claims

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Application Information

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IPC IPC(8): C23C18/36C23C18/34
CPCC23C18/36C23C18/34
Inventor 邹佳祁廖润秋简婷杨晓晗
Owner VICTORY GIANT TECH HUIZHOU CO LTD
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