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A kind of preparation method of brass with superhydrophobic surface with corrosion resistance

A super-hydrophobic surface and corrosion-resistant technology, applied in the field of electrochemistry, can solve problems such as brass corrosion

Inactive Publication Date: 2015-12-16
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of corrosion of brass in seawater environment, and provide a kind of preparation method of brass with corrosion-resistant superhydrophobic surface

Method used

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  • A kind of preparation method of brass with superhydrophobic surface with corrosion resistance
  • A kind of preparation method of brass with superhydrophobic surface with corrosion resistance
  • A kind of preparation method of brass with superhydrophobic surface with corrosion resistance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] A preparation method of brass with corrosion-inhibiting superhydrophobic surface, comprising the steps of:

[0054] (1) Preparation of etching solution

[0055] At a concentration of 20% (w) FeCl 3 Adding hydrochloric acid with a concentration of 35-37% (w) into the aqueous solution to make the concentration of hydrochloric acid in the etching solution 0.33% (v);

[0056] (2), pretreatment of brass

[0057]After polishing six brass electrodes with a specification of 1×1cm and five brass sheets of 70×10×1cm through 1#, 3#, and 6# metallographic sandpaper in sequence, clean them with an ultrasonic cleaner in acetone solution for 5 minutes Left and right, after cleaning, rinse with ethanol and deionized water in order to remove surface oil and grease;

[0058] One of the brass electrodes does not undergo surface etching and self-assembly below, as a blank sample (Bare);

[0059] (3) Etching of brass surface

[0060] Put the 5 brass sheets and 5 brass electrodes pretre...

Embodiment 2

[0073] A preparation method of brass with corrosion-inhibiting superhydrophobic surface, comprising the steps of:

[0074] (1) Preparation of etching solution

[0075] In the concentration of 0 (w)% (blank), 4.8% (w), 9% (w), 13% (w), 16.7% (w) and 20% (w) of FeCl 3 Adding hydrochloric acid with a concentration of 35-37% (w) into the aqueous solution to make the concentration of hydrochloric acid in the etching solution 0.33% (v);

[0076] (2), pretreatment of brass

[0077] After polishing six brass electrodes with a specification of 1×1cm and five brass sheets of 70×10×1cm through 1#, 3#, and 6# metallographic sandpaper in sequence, clean them with an ultrasonic cleaner in acetone solution for 5 minutes Left and right, after cleaning, rinse with ethanol and deionized water in order to remove surface oil and grease;

[0078] One of the brass electrodes does not undergo surface etching and self-assembly below, as a blank sample (Bare);

[0079] (3) Etching of brass surface...

Embodiment 3

[0094] A kind of preparation method of the cupronickel with the superhydrophobic surface of anticorrosion property, comprises the steps:

[0095] (1) Preparation of etching solution

[0096] At a concentration of 9% (w) FeCl 3 Adding hydrochloric acid with a concentration of 35-37% (w) into the aqueous solution to make the concentration of hydrochloric acid in the etching solution 0.33% (v);

[0097] (2), pretreatment of brass

[0098] After polishing six brass electrodes with a specification of 1×1cm and five brass sheets of 70×10×1cm through 1#, 3#, and 6# metallographic sandpaper in sequence, clean them with an ultrasonic cleaner in acetone solution for 5 minutes Left and right, after cleaning, rinse with ethanol and deionized water in order to remove surface oil and grease;

[0099] One of the brass electrodes does not undergo surface etching and self-assembly below, as a blank sample (Bare);

[0100] (3) Etching of brass surface

[0101] Put the 5 brass sheets and 5 ...

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Abstract

The invention discloses a preparation method of brass with a corrosion-resistant super-hydrophobic surface. That is to say, four steps including the preparation of etching solution, pretreatment of brass, etching of brass surface and self-assembly of brass surface are finally obtained to obtain a kind of brass with corrosion-resistant superhydrophobic surface. The brass with a super-hydrophobic surface obtained by the preparation method of the invention has a contact angle of up to 158° and a corrosion inhibition efficiency of up to 97.3%.

Description

technical field [0001] The invention relates to a method for preparing brass with a corrosion-resistant superhydrophobic surface, which belongs to the field of electrochemistry. Background technique [0002] Because of its excellent heat transfer and corrosion resistance, brass is widely used in thermal power generation units and heat exchange systems in marine military engineering. However, the increase in the concentration ratio of circulating cooling water or the presence of aggressive ions in the cooling medium will cause serious corrosion problems in brass pipes, which will bring huge economic losses to production and life. Commonly used anti-corrosion methods (such as adding corrosion inhibitors for water treatment) are facing many problems that need to be solved due to the disadvantages of environmental pollution and large dosage. Therefore, it is necessary to research and develop new anti-corrosion methods. Superhydrophobic surface treatment technology is a new anti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05D5/08B05D3/10
Inventor 徐群杰邓先钦曹钦云虹潘红涛
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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