Unlock instant, AI-driven research and patent intelligence for your innovation.

An acid zinc-nickel electroplating solution with high current density resistance and its application

A technology of current density and electroplating solution, applied in the field of acid zinc-nickel electroplating solution, achieves the effect of reducing processing difficulty, cost saving and excellent performance

Active Publication Date: 2020-06-02
GUANGZHOU HKS SURFACE TREATMENT CO LTD
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to aim at the shortcoming of current acidic zinc-nickel alloy, provide a kind of high current density resistant acidic zinc-nickel electroplating solution and its application, use this electroplating solution can be in 0~3A / dm 2 Electroplating is carried out in a wide range of current density, the proportion of nickel content in the coating is uniform, and it can withstand more than 5A / dm 2 Current density does not burn

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • An acid zinc-nickel electroplating solution with high current density resistance and its application
  • An acid zinc-nickel electroplating solution with high current density resistance and its application
  • An acid zinc-nickel electroplating solution with high current density resistance and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The high current density resistant acidic zinc-nickel electroplating solution of embodiment 1 is made up of following raw material: zinc chloride 40g / L, nickel chloride 90g / L, conductive salt 200g / L, pH buffering agent 60g / L, brightener 1mL / L, complexing agent 12mL / L, alcohol amine compound 10g / L (R in the general formula of alcohol amine compound 1 for H, R 2 for -CH 2 OH,R 3 is ethylene), and the balance is distilled water.

[0036] The raw materials used for conductive salt, pH buffering agent, brightener and complexing agent are the above-mentioned disclosed raw materials, which are conventional techniques in the art. The compositions of conductive salt, pH buffering agent, brightener and complexing agent used in the examples of the present invention and the comparative examples are the same.

Embodiment 2

[0040] The high current density resistant acidic zinc-nickel electroplating solution of embodiment 2 is made up of following raw material: zinc chloride 50g / L, nickel chloride 100g / L, conductive salt 210g / L, pH buffering agent 50g / L, brightener 1mL / L, complexing agent 12mL / L, alcohol amine compound 10g / L (R in the general formula of alcohol amine compound 1 for H, R 2 for -CH 2 OH,R 3 is ethylene), and the balance is distilled water.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an acid zinc-nickel electroplating solution resistant to high current density and application thereof. The acid zinc-nickel electroplating solution resistant to high current density is prepared from zinc chloride, nickel chloride, an alcohol amine compound, a conductive salt, a pH buffer, a brightener, a complexing agent and water. The invention also discloses an electroplating method with the acid zinc-nickel electroplating solution resistant to high current density. The acid zinc-nickel electroplating solution resistant to high current density does not contain ammonium chloride, thereby lowering the difficulty of wastewater treatment; with a novel composite additive, the acid zinc-nickel electroplating solution has good wetting property and low foaming performance, and normal production is not affected even when air stirring and a continuous filtration device are utilized; in the wider current density range of 0 swung dash 3A / dm<2>, the nickel content of a coating can be stabilized within a certain range, so as to improve the uniformity of nickel content in coatings in high and low areas, and at the same time, the coating can withstand the current densityexceeding 5A / dm<2> without being easily burnt.

Description

technical field [0001] The invention relates to an acidic zinc-nickel electroplating solution with high current density resistance and application thereof. Background technique [0002] For the protection of automotive parts, the traditional method is to galvanize the surface, but the corrosion rate of the electro-galvanized layer is too high, especially as the auto parts have higher and higher requirements for corrosion resistance, traditional electroplating The zinc layer can no longer meet the requirements. It is replaced by zinc-nickel alloy electroplating. The zinc-nickel alloy coating has excellent corrosion resistance, which is more than 5 times that of the zinc coating under the same conditions, and has low hydrogen embrittlement sensitivity, and has great advantages in weldability and toughness. These characteristics have been studied more and more, and have been applied to mass production abroad in the 1970s. There are mainly acidic and alkaline solution systems ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C25D3/56
CPCC25D3/565
Inventor 蒲海丽周阳亮彭花
Owner GUANGZHOU HKS SURFACE TREATMENT CO LTD