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Preparing method for corrosion-resistant aluminum alloy super-hydrophobic surface

A super-hydrophobic surface, aluminum alloy surface technology, applied in the direction of metal material coating process, etc., can solve the problems of high cost, complex processing procedures, poor stability, etc., and achieve the effects of low cost, simple preparation method and high stability

Inactive Publication Date: 2017-07-07
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above-mentioned technical problems in the prior art, the present invention provides a method for preparing a superhydrophobic surface of an aluminum alloy with corrosion resistance, and the method for preparing a superhydrophobic surface of an aluminum alloy with corrosion resistance needs to solve The technical problems of aluminum alloy superhydrophobic surface technology in the prior art are complex processing procedures, high cost, and poor stability

Method used

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  • Preparing method for corrosion-resistant aluminum alloy super-hydrophobic surface
  • Preparing method for corrosion-resistant aluminum alloy super-hydrophobic surface
  • Preparing method for corrosion-resistant aluminum alloy super-hydrophobic surface

Examples

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Embodiment 1

[0040] A method for preparing an aluminum alloy superhydrophobic surface with corrosion resistance, comprising the steps of:

[0041] (1) Electrode pretreatment: After the aluminum alloy is polished with 1#, 3#, and 6# metallographic sandpaper in sequence, it is placed in acetone, ultrasonically cleaned, filtered, and then rinsed with absolute ethanol and deionized water in sequence. To remove oil and grease from metal surfaces;

[0042] (2) Preparation of hydrothermal solution: prepare 0.025mol / LCeCl 3 .7H 2 O, the mixed aqueous solution of 0.25mol / L urea, standby as hydrothermal solution;

[0043] (3) Reaction in a high-pressure reactor: place the pretreated aluminum alloy in a hydrothermal solution prepared in a high-pressure reactor, and place the reactor in a drying oven for reaction. The reaction temperature is 120°C, and the reaction time is for 6h;

[0044] (4) Carry out self-assembly reaction in a certain concentration of stearic acid ethanol solution: take out th...

Embodiment 2

[0052] A method for preparing an aluminum alloy superhydrophobic surface with corrosion resistance, comprising the steps of:

[0053] (1) Electrode pretreatment: After the aluminum alloy is polished with 1#, 3#, and 6# metallographic sandpaper in sequence, it is placed in acetone, ultrasonically cleaned, filtered, and then rinsed with absolute ethanol and deionized water in sequence. To remove oil and grease from metal surfaces;

[0054] (2) Preparation of hydrothermal solution: prepare 0.025mol / LCeCl 3 .7H 2 O, the mixed aqueous solution of 0.25mol / L urea, standby as hydrothermal solution;

[0055] (3) Reaction in a high-pressure reactor: place the pretreated aluminum alloy in a hydrothermal solution prepared in a high-pressure reactor, and place the reactor in a drying oven for reaction. The reaction temperature is 120°C, and the reaction time is for 6h;

[0056] (4) Carry out self-assembly reaction in a certain concentration of stearic acid ethanol solution: take out th...

Embodiment 3

[0060] A method for preparing an aluminum alloy superhydrophobic surface with corrosion resistance, comprising the steps of:

[0061] (1) Electrode pretreatment: After the aluminum alloy is polished with 1#, 3#, and 6# metallographic sandpaper in sequence, it is placed in acetone, ultrasonically cleaned, filtered, and then rinsed with absolute ethanol and deionized water in sequence. To remove oil and grease from metal surfaces;

[0062] (2) Preparation of hydrothermal solution: prepare 0.025mol / LCeCl 3 .7H 2 O, the mixed aqueous solution of 0.25mol / L urea, standby as hydrothermal solution;

[0063] (3) Reaction in a high-pressure reactor: place the pretreated aluminum alloy in a hydrothermal solution prepared in a high-pressure reactor, and place the reactor in a drying oven for reaction. The reaction temperature is 120°C, and the reaction time is for 6h;

[0064] (4) Carry out self-assembly reaction in a certain concentration of stearic acid ethanol solution: take out th...

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Abstract

The invention provides a preparing method for a corrosion-resistant aluminum alloy super-hydrophobic surface. An aluminum alloy is pretreated so that surface oil contamination and grease can be removed, then, the aluminum alloy subjected to polishing treatment is put in a mixed aqueous solution of cerium chloride and urea in a high-pressure reactor, a layer of composite micro-nano structure is prepared on the aluminum alloy surface through a hydrothermal reaction, and finally through octadecanoic acid modification, the super-hydrophobic surface with a corrosion-resistant micro-nano structure is obtained on the surface of the aluminum alloy. The contact angle of a super-hydrophobic obtained through the method can reach 155.5 degrees, the super-hydrophobic film has very good super-hydrophobicity, and meanwhile the film layer shows excellent abrasion resisting performance and stability performance in a simulated sea water solution. Compared with the prior art, the preparation process is simple, conditions are easy to control, the cost is low, environmentally friendliness is achieved, and the prepared aluminum alloy super-hydrophobic surface is relatively high in stability.

Description

technical field [0001] The invention belongs to the field of chemical industry, and relates to a metal surface treatment method, in particular to a preparation method of an aluminum alloy super-hydrophobic surface with corrosion resistance. Background technique [0002] The current output and consumption of aluminum (in terms of tons) is second only to steel, becoming the second largest metal used by humans. Aluminum and aluminum alloys are metal materials with excellent comprehensive properties. The advantages are as follows: (1) Low density. It is a light metal whose density is only higher than that of magnesium among all metal materials, which is about 1 / 3 of the density of steel. (2) High plasticity. (3) Easy to strengthen. The strength of pure aluminum is poor, but the aluminum alloy after alloying and heat treatment can have high specific strength. (4) Good thermal conductivity and electrical conductivity. Under the same mass conditions, the metal conductivity of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/05C23C22/78C23C22/83
CPCC23C22/05C23C22/78C23C22/83
Inventor 徐群杰陈晓航万云霄杨灵慧闵宇霖
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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