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Zinc-nickel-cobalt electroplating solution and preparation method and electroplating method thereof

An electroplating solution, zinc-nickel-cobalt technology, applied in the field of zinc-nickel-cobalt electroplating solution and its preparation, can solve the problem of lack of anti-wear performance, and achieve the effect of preventing chemical corrosion and physical wear and achieving good stability

Active Publication Date: 2021-01-26
青岛农业大学海都学院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As a traditional anti-corrosion process, galvanizing is widely used in various fields. Compared with other metals, zinc is a relatively cheap and easy-to-plate metal. It is a low-value anti-corrosion coating and is widely used to protect steel. Parts, especially to prevent atmospheric corrosion, the galvanized layer is used as an anodic protective coating, which has a high safety factor; with the continuous improvement of human quality requirements, the galvanized layer can no longer meet the performance indicators in some fields, such as the current automobile In the industry, most brand cars are currently using new zinc-nickel alloys. Zinc-nickel alloys have excellent anti-corrosion properties. The protective performance of the coating with the same thickness is 10-15 times that of traditional galvanized coatings, but the hardness of zinc-nickel alloys is 150- 200HV, does not have anti-wear performance, which limits the application of this process in some special fields, such as the working environment with friction between the pair and the railway system with strong wind and sand, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Take the preparation of 1 liter of zinc-nickel-cobalt electroplating solution as an example, add 400 milliliters of deionized water in the first container with a volume of 1 liter, put 45 grams of sodium hydroxide and stir until dissolved, add 40 grams of zinc sulfate and stir until dissolved; Add 300 milliliters of deionized water into the second container, add 60 grams of complexing agent and stir until dissolved, then add 6 grams of nickel sulfate, add 6 grams of cobalt sulfate and stir until dissolved, add the solution in the second container to the first container, Stir while adding, after adding all the additives, add 0.4 g of additives to the first container, make up the liquid level to the 1 liter scale with deionized water, stir evenly, and complete the preparation of the electroplating solution.

[0029] When using this electroplating solution, control the temperature of the electroplating solution at 35°C; use a pure iron plate as the anode, and use the workpi...

Embodiment 2

[0031] Take the preparation of 1 liter of zinc-nickel-cobalt electroplating solution as an example, add 400 milliliters of deionized water in the first container with a volume of 1 liter, put 50 grams of sodium hydroxide and stir until dissolved, add 45 grams of zinc sulfate and stir until dissolved; Add 300 milliliters of deionized water into the second container, add 65 grams of complexing agent and stir until dissolved, then add 7 grams of nickel sulfate, add 7 grams of cobalt sulfate and stir until dissolved, add the solution in the second container to the first container, Stir while adding, after adding all the additives, add 0.5 g of additives to the first container, fill up the liquid level to the 1 liter scale with deionized water, stir evenly, and complete the preparation of the electroplating solution.

[0032] When using this electroplating solution, control the temperature of the electroplating solution at 40°C; use a pure iron plate as the anode, and use the workpi...

Embodiment 3

[0034] Take the preparation of 1 liter of zinc-nickel-cobalt electroplating solution as an example, add 400 milliliters of deionized water in the first container with a volume of 1 liter, put 40 grams of sodium hydroxide and stir until dissolved, add 35 grams of zinc sulfate and stir until dissolved; Add 300 milliliters of deionized water into the second container, add 55 grams of complexing agent and stir until dissolved, then add 8 grams of nickel sulfate, add 5 grams of cobalt sulfate and stir until dissolved, add the solution in the second container to the first container, Stir while adding, after adding all the additives, add 0.4 g of additives to the first container, make up the liquid level to the 1 liter scale with deionized water, stir evenly, and complete the preparation of the electroplating solution.

[0035] When using this electroplating solution, control the temperature of the electroplating solution at 40°C; use a pure iron plate as the anode, and use the workpi...

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Abstract

The invention relates to the field of electroplating, and provides a zinc-nickel-cobalt electroplating solution and a preparation method and electroplating method thereof. Each liter of the zinc-nickel-cobalt electroplating solution is prepared from the the following components: 5-10g of nickel sulfate, 30-60g of sodium hydroxide, 3-12g of cobalt sulfate, 30-50g of zinc sulfate, 0.3-0.6 g of an additive, 50-70g of a complexing agent and the balance of deionized water. The electroplating method comprises the steps that a pure iron plate serves as an anode, a to-be-plated piece serves as a cathode, the anode and the cathode are soaked in the zinc-nickel-cobalt electroplating solution, electroplating is conducted at a certain temperature and current density, and a zinc-nickel-cobalt plating layer can be obtained on the cathode. The coating is used as an anodic protective coating, has excellent corrosion resistance, high hardness and self-lubricating property, and has dual effects of corrosion resistance and wear resistance.

Description

technical field [0001] The invention relates to the field of electroplating, in particular to a zinc-nickel-cobalt electroplating solution, a preparation method thereof, and an electroplating method. Background technique [0002] As a traditional anti-corrosion process, galvanizing is widely used in various fields. Compared with other metals, zinc is a relatively cheap and easy-to-plate metal. It is a low-value anti-corrosion coating and is widely used to protect steel. Parts, especially to prevent atmospheric corrosion, the galvanized layer is used as an anodic protective coating, which has a high safety factor; with the continuous improvement of human quality requirements, the galvanized layer can no longer meet the performance indicators in some fields, such as the current automobile Industry, most brand cars are now using new zinc-nickel alloys, zinc-nickel alloys have excellent anti-corrosion properties, the protective performance of the same thickness of the coating is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/56
CPCC25D3/56
Inventor 张玲玲姚善卓王建化赵汝山谭鸿飞郝爱国
Owner 青岛农业大学海都学院