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Composite brightener, nanocrystalline nickel electroplate liquid and method for nickel plating on surface of workpiece based on nanocrystalline electroplate liquid

A technology of nickel electroplating solution and brightener, applied in the field of electroplating nickel, to achieve the effects of long service life, fast light speed and less decomposition products

Active Publication Date: 2016-09-07
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For the defect that existing single nickel-plating brightener exists, the purpose of the present invention is to provide a kind of composite brightener for nickel-plating bath, by using composite brightener, show light speed fast in the nickel-plating process, coating The advantages of dense structure and bright and uniform appearance

Method used

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  • Composite brightener, nanocrystalline nickel electroplate liquid and method for nickel plating on surface of workpiece based on nanocrystalline electroplate liquid
  • Composite brightener, nanocrystalline nickel electroplate liquid and method for nickel plating on surface of workpiece based on nanocrystalline electroplate liquid
  • Composite brightener, nanocrystalline nickel electroplate liquid and method for nickel plating on surface of workpiece based on nanocrystalline electroplate liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Accurately weigh 100g of sodium saccharin, 1.2g of diethylpropargylamine, 10g of pyridinium propanesulfonate, 200g of sodium vinylsulfonate and 0.5g of S-carboxyethylisothiourea betaine, and pour them in sequence to a volume greater than 1000mL Add about two-thirds of deionized water to a container, heat to 40-50°C until it dissolves completely, stir evenly, calibrate to 1000mL after cooling to room temperature, and then transfer to a light-proof container for storage to obtain nano Crystal nickel composite brightener.

[0029] Accurately weigh nickel sulfate NiSO 4 ·6H 2 O 250g, nickel chloride NiCl 2 ·6H 2 O 40g, boric acid H 3 BO 3 35g and 0.1g of sodium lauryl sulfate were made into the working base liquid, and 10mL of composite brightener was added to the working base liquid, stirred evenly and then calibrated to 1L, and the pH of the solution was controlled within the range of 3.8-4.5 to obtain bright nanocrystals Nickel plating solution.

[0030] When usi...

Embodiment 2

[0033] Accurately weigh 150g of sodium saccharin, 1.3g of diethylpropargylamine, 12g of pyridinium propanesulfonate, 300g of sodium vinylsulfonate and 0.6g of S-carboxyethylisothiourea betaine, and pour them in order to a volume greater than 1000mL Add about two-thirds of deionized water to a container, heat to 40-50°C until it dissolves completely, stir evenly, calibrate to 1000mL after cooling to room temperature, and then transfer to a light-proof container for storage to obtain nano Crystal nickel composite brightener.

[0034] Accurately weigh nickel sulfate NiSO 4 ·6H 2 O 280g, nickel chloride NiCl 2 ·6H 2 O 45g, boric acid H 3 BO 3 40g and 0.1g of sodium lauryl sulfate were made into the working base liquid, and 10mL of composite brightener was added to the working base liquid, stirred evenly and then calibrated to 1L, and the pH of the solution was controlled within the range of 3.8-4.5 to obtain bright nanocrystals Nickel plating solution.

[0035] When using ...

Embodiment 3

[0038] Accurately weigh 120g of sodium saccharin, 1.4g of diethylpropargylamine, 14g of pyridinium propanesulfonate, 400g of sodium vinylsulfonate and 0.6g of S-carboxyethylisothiourea betaine, and pour them in order to a volume greater than 1000mL Add about two-thirds of deionized water to a container, heat to 40-50°C until it dissolves completely, stir evenly, calibrate to 1000mL after cooling to room temperature, and then transfer to a light-proof container for storage to obtain nano Crystal nickel composite brightener.

[0039] Accurately weigh nickel sulfate NiSO 4 ·6H 2 O 270g, nickel chloride NiCl 2 ·6H 2 O 40g, boric acid H 3 BO 345g and 0.2g of sodium lauryl sulfate were made into the working base liquid, and 10mL of composite brightener was added to the working base liquid, stirred evenly and then calibrated to 1L, and the pH of the solution was controlled within the range of 3.8-4.5 to obtain bright nanocrystals Nickel plating solution.

[0040] When using th...

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Abstract

The invention discloses a composite brightener, nanocrystalline nickel electroplate liquid and a method for nickel plating on the surface of a workpiece based on the nanocrystalline electroplate liquid. The composite brightener comprises saccharin sodium salt, diethyl propiolic amine, pyridinium propyl sulfobetaine, and an aqueous solution of ethylenesulfonic acid and S-carboxyethylisothiuronium betaine. The composite brightener is good in dispersing power and covering power in the electroplate liquid, the number of decomposition products in the nickel plating process is small, the brightening speed is high, stability of the electroplate liquid is good and the service life is long. The electroplate liquid added with the composite brightener has the advantages of being high in brightening speed, compact in clad layer structure, bright and uniform in appearance in the nickel plating process of the electroplate liquid. The average dimension of obtained nickel layer crystal grains reaches 8 nm, the appearance of the clad layer is bright and uniform, and the quality is stable.

Description

technical field [0001] The invention relates to a composite brightener for nickel plating electroplating solution, a nano-crystal nickel electroplating solution, and a method for using the nano-crystal nickel electroplating solution to plate nickel on the surface of a workpiece, belonging to the technical field of electroplating nickel. Background technique [0002] Because electroplated nanocrystalline nickel has higher hardness, better wear resistance and corrosion resistance, and better magnetic, high temperature, mechanical and electrocatalytic properties than traditional coarse-grained materials, it has been widely used in automobiles, aerospace and aerospace in recent years. and materials engineering. In order to improve the decorative performance of electroplated nanocrystalline nickel, it is necessary to add brighteners to the nickel plating solution. Good quality brighteners have less decomposition products, which play a good role in the leveling and brightness of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/16
CPCC25D3/16
Inventor 杨鹰崔东红李海普
Owner CENT SOUTH UNIV
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