Corrosion-resistant super-hydrophobic copper-nickel composite coating and preparation method and application thereof

A composite coating, super-hydrophobic technology, applied in electrolytic components, electrolytic processes, cells, etc., can solve the problems of high cost and complex preparation methods, reduce surface energy, enhance corrosion resistance and protection performance, and promote the formation of Effect

Pending Publication Date: 2022-07-26
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation method is complex and requires multiple ultrafiltrations to realize the modification of silica
In order to solve the above problems, the laser etching method is applied to the construction of the superhydrophobic film layer. Although the superhydrophobic layer obtained by the laser etching method has good wear resistance, it is expensive and cannot be widely used in practice.

Method used

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  • Corrosion-resistant super-hydrophobic copper-nickel composite coating and preparation method and application thereof
  • Corrosion-resistant super-hydrophobic copper-nickel composite coating and preparation method and application thereof
  • Corrosion-resistant super-hydrophobic copper-nickel composite coating and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0101] The present embodiment provides a corrosion-resistant and super-hydrophobic copper-nickel composite coating and a preparation method thereof. The preparation method includes the following steps:

[0102](1) carry out degreasing treatment, derusting treatment and rinsing successively with Q235B steel plate; The degreasing liquid that described degreasing treatment adopts is the aqueous solution of sodium salt, and described sodium salt is 50g / L sodium hydroxide, 30g / L The combination of sodium carbonate, 20g / L sodium phosphate dodecahydrate and 15g / L sodium silicate nonahydrate; the temperature of the degreasing treatment is 70°C, and the time is 20min; the derusting liquid used in the derusting treatment is 15vt % hydrochloric acid solution, and the temperature of the rust removal treatment is 25 ° C, and the time is 20 min; the rinsing solution used in the rinsing is deionized water;

[0103] (2) Immerse the steel sheet obtained in step (1) in the pre-dip copper soluti...

Embodiment 2

[0113] The present embodiment provides a corrosion-resistant and super-hydrophobic copper-nickel composite coating and a preparation method thereof. The preparation method includes the following steps:

[0114] (1) carry out degreasing treatment, derusting treatment and rinsing successively with Q345B steel plate; The degreasing liquid that described degreasing treatment adopts is the aqueous solution of sodium salt, and described sodium salt is 40g / L sodium hydroxide, 20g / L The combination of sodium carbonate, 10g / L sodium phosphate dodecahydrate and 10g / L sodium silicate nonahydrate; the temperature of the degreasing treatment is 60°C, and the time is 30min; the derusting liquid used in the derusting treatment is 10vt % hydrochloric acid solution, and the temperature of the rust removal treatment is 20 ° C, and the time is 30 min; the rinsing solution used in the rinsing is deionized water;

[0115] (2) Immerse the steel sheet obtained in step (1) in the pre-dip copper solut...

Embodiment 3

[0121] The present embodiment provides a corrosion-resistant and super-hydrophobic copper-nickel composite coating and a preparation method thereof. The preparation method includes the following steps:

[0122] (1) 610L steel plate is subjected to degreasing treatment, derusting treatment and flushing successively; the degreasing liquid used in the degreasing treatment is an aqueous solution of sodium salt, and the sodium salt is 60g / L sodium hydroxide, 40g / L The combination of sodium carbonate, 30g / L sodium phosphate dodecahydrate and 20g / L sodium silicate nonahydrate; the temperature of the degreasing treatment is 75°C, and the time is 10min; the derusting liquid used in the derusting treatment is 20vt % hydrochloric acid solution, and the temperature of the rust removal treatment is 30 ° C, and the time is 10 min; the rinsing solution used in the rinsing is deionized water;

[0123] (2) Immerse the steel sheet obtained in step (1) in the pre-dip copper solution for 20 s, us...

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Abstract

The invention provides a corrosion-resistant super-hydrophobic copper-nickel composite coating as well as a preparation method and application thereof. The preparation method comprises the following steps: (1) performing oil removal and rust removal pretreatment on a metal matrix; (2) electroplating a copper plating layer on the surface of the metal matrix obtained in the step (1); (3) electroplating a nickel-boron carbide coating on the surface of the metal matrix obtained in the step (2); and (4) the surface of the metal matrix obtained in the step (3) is subjected to modification treatment, and the copper-nickel composite coating is prepared on the surface of the metal matrix. Wherein the nickel-boron carbide composite plating solution adopted for electroplating in the step (3) contains micron-sized boron carbide particles. The water contact angle of the copper-nickel composite coating is larger than or equal to 150 degrees, and the rolling angle is smaller than or equal to 10 degrees. According to the preparation method provided by the invention, the binding force between the plating layer and the metal matrix is enhanced while the preparation process is simplified, the wear resistance is improved, and the preparation cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of metal substrate surface anti-corrosion treatment technology, and relates to a composite coating, in particular to a corrosion-resistant and super-hydrophobic copper-nickel composite coating and a preparation method and application thereof. Background technique [0002] Steel surface coating is an effective protection measure for steel corrosion. However, most of the coatings need to be used for a long time in harsh environments such as high humidity and heat, industrial atmosphere or marine atmosphere, and it is difficult to provide effective protection for the steel substrate. For example: hot-dip galvanized coating is cheap, but it is difficult to be used in humid environments; although bright nickel or bright copper coatings have good shielding properties, they are mostly hydrophilic and difficult to serve in humid environments for a long time; especially The bright copper coating is easily corroded by...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D5/12C25D5/36C25D21/12
CPCC25D5/12C25D5/36C25D21/12
Inventor 赵雪东书汉杨阳马瑞娜范永哲杜安曹晓明
Owner HEBEI UNIV OF TECH
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