Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Alkaline electrolyte and nickel electroplating method in alkaline system

An electrolyte and electroplating nickel technology, which is applied in the field of alkaline electrolyte, can solve the problems of blackening and brittleness, blackening and brittleness of the deposited nickel layer, etc., achieve good bonding force and corrosion resistance, meet industrial needs, and have great prospects Effect

Inactive Publication Date: 2016-09-21
YIWU SCI & TECH INST CO LTD OF ZHEJIANG UNIV OF TECH
View PDF3 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims at the deficiencies of the existing boric acid system and the problem that the electroplating of nickel in the nickel-ammonia complex alkaline system becomes black and brittle, and proposes an alkaline electrolyte and a method for electroplating nickel in the alkaline system. Adding an appropriate amount of sodium benzenesulfinate to the nickel-ammonia complex alkaline system in the neutral electrolyte can effectively solve the problem that the deposited nickel layer is black and brittle, and successfully electroplates flat and bright nickel. This method has high current efficiency and the prepared Bright nickel, good toughness, good bonding force, etc.

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
  • Alkaline electrolyte and nickel electroplating method in alkaline system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Configure 250mL of electrolyte containing nickel chloride 30g / L, ammonium chloride 40g / L, ammonia water 50g / L, and sodium benzenesulfinate 0.05g / L. Use a ruthenium-titanium electrode anode, soak it in 1mol / L hydrochloric acid for 20 minutes to remove impurities attached to the surface, take it out, rinse it with deionized water, and dry it with cold air. Using stainless steel as the cathode material, after grinding with 1#, 3#, and 5# sandpaper, degreasing with absolute ethanol, washing with deionized water and drying with cold air, put the cathode and anode into the electrolytic cell at the same time, and control the electrodeposition temperature to 20℃, the current density is -100A / m 2 , Stir the electrolyte at a speed of 200r / min. After 60 minutes of electrodeposition, take out the cathode, rinse the residual electrolyte on the surface with water, and dry it with cold air to obtain a bright and smooth nickel-plated layer.

example 1

[0032] The current efficiency of nickel electroplating in Example 1 is 97.21%.

Embodiment 2

[0034] Configure 250mL of electrolyte containing nickel chloride 500g / L, ammonium chloride 400g / L, ammonia water 500g / L, and sodium benzenesulfinate 2g / L. Use ruthenium-titanium electrode anode, immerse in 5mol / L hydrochloric acid for 5 minutes to remove impurities attached to the surface, take it out, rinse it with deionized water, and dry it with cold air. Using stainless steel as the cathode material, after grinding with 1#, 3#, and 5# sandpaper, degreasing with absolute ethanol, washing with deionized water and drying with cold air, put the cathode and anode into the electrolytic cell at the same time, and control the electrodeposition temperature to 60℃, the current density is -500A / m 2 , Stir the electrolyte at a speed of 700r / min. After 3 minutes of electrodeposition, take out the cathode, rinse the residual electrolyte on the surface with water, and dry it with cold air to obtain a bright and smooth nickel-plated layer.

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 alkaline electrolyte and a nickel electroplating method in an alkaline system. The alkaline electrolyte comprises nickel chloride, ammonium chloride, ammonium hydroxide, sodium benzene sulphinate and water, the concentration of nickel chloride is 30 to 500g / L; the concentration of ammonium chloride is 40 to 400g / L; the concentration of ammonium hydroxide is 50 to 500g / L; and the concentration of sodium benzene sulphinate is 0.05 to 2g / L. The nickel electroplating method in the alkaline system comprises the steps of (1) preparing the alkaline electrolyte; (2) carrying out surface oxidation layer removing and deoiling treatment on a cathode material, and soaking an anode material in hydrochloric acid to remove surface impurities; and (3) putting the cathode material and the anode material subjected to pretreatment in an electrolytic bath holding the alkaline electrolyte for electrodeposition, taking out the cathode material, washing with water, and drying the cathode material by blowing with cold air to obtain a bright and flat nickel-plated layer. According to the alkaline electrolyte and the nickel electroplating method, the problem that a deposited nickel layer is black and brittle can be effectively solved through the alkaline electrolyte, flat and bright nickel is electroplated successfully, and the method has the advantages that the current efficiency is high and the prepared nickel is bright in color and good in toughness and binding force.

Description

(1) Technical field [0001] The invention relates to an alkaline electrolyte and a method for electroplating nickel in the alkaline system, belonging to the technical field of electroplating. (2) Background technology [0002] In the current industrial production of electroplating nickel, nickel plating is mainly carried out with the Watts nickel plating solution of the boric acid system. This process has been continuously improved and matured after decades of transformation and innovation. , the traditional electroplating nickel process increasingly reveals its shortcomings in production. The disadvantages of the traditional nickel plating process are as follows: [0003] 1. Using the acid system electrodeposition nickel process, using boric acid as a buffer, it is necessary to strictly control the pH within the range of 4.5 to 5.4. If the pH is too low, the efficiency of the cathode will decrease, and if the pH is too high, it will lead to the formation of nickel hydroxide...

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
IPC IPC(8): C25D3/12
CPCC25D3/12
Inventor 伍廉奎郑国渠曹华珍
Owner YIWU SCI & TECH INST CO LTD OF ZHEJIANG UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com