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Preparation method of aluminum alloy bionic anti-icing surface

An aluminum alloy surface, aluminum alloy technology, applied in the direction of surface reaction electrolytic coating, coating, electrolytic coating, etc., can solve the problems of human body and environmental hazards, high corrosion of electrolyte, complicated preparation process, etc., and achieve low environmental hazards , good anti-icing performance and simple treatment process

Inactive Publication Date: 2018-02-23
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the electrolyte prepared by these existing methods is highly corrosive and highly polluting, which is extremely harmful to the human body and the environment, and the preparation process is complicated.

Method used

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  • Preparation method of aluminum alloy bionic anti-icing surface

Examples

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Effect test

Embodiment 1

[0029] A method for preparing an aluminum alloy bionic anti-icing surface, the specific steps are as follows:

[0030] A. Pretreatment of the aluminum alloy surface: the aluminum alloy surface is polished with 800#, 1500#, 2000# sandpaper in turn to remove the surface oxide layer, and the polished aluminum alloy surface is placed in acetone, absolute ethanol and distilled water for ultrasonic cleaning , to remove dirt on the surface;

[0031] B. Preparation of surface micro-nano hierarchical structure: use a laser engraving machine to perform laser ablation on the pretreated aluminum alloy surface to prepare an aluminum alloy surface with a microstructure. The microscopic surface is a cylindrical array structure with a diameter of 30 μm, and two adjacent The distance between the centers of the cylinders is 80 μm, and the height of a single cylinder is 80 μm;

[0032] Then place the aluminum alloy surface with microstructure in acetone, absolute ethanol and distilled water for...

Embodiment 2

[0035] A method for preparing an aluminum alloy bionic anti-icing surface, the specific steps are as follows:

[0036]A. Pretreatment of the aluminum alloy surface: the aluminum alloy surface is polished with 800#, 1500#, 2000# sandpaper in turn to remove the surface oxide layer, and the polished aluminum alloy surface is placed in acetone, absolute ethanol and distilled water for ultrasonic cleaning , to remove dirt on the surface;

[0037] B. Preparation of surface micro-nano hierarchical structure: use a laser engraving machine to perform laser ablation on the pretreated aluminum alloy surface to prepare an aluminum alloy surface with a microstructure. The microscopic surface is a cylindrical array structure with a diameter of 60 μm, and two adjacent The distance between the centers of the cylinders is 120 μm, and the height of a single cylinder is 80 μm;

[0038] Then place the aluminum alloy surface with microstructure in acetone, absolute ethanol and distilled water for...

Embodiment 3

[0041] A method for preparing an aluminum alloy bionic anti-icing surface, the specific steps are as follows:

[0042] A. Pretreatment of the aluminum alloy surface: the aluminum alloy surface is polished with 800#, 1500#, 2000# sandpaper in turn to remove the surface oxide layer, and the polished aluminum alloy surface is placed in acetone, absolute ethanol and distilled water for ultrasonic cleaning , to remove dirt on the surface;

[0043] B. Preparation of surface micro-nano hierarchical structure: use a laser engraving machine to perform laser ablation on the pretreated aluminum alloy surface to prepare an aluminum alloy surface with a microstructure. The microscopic surface is a cylindrical array structure with a diameter of 80 μm, and two adjacent The distance between the centers of the cylinders is 150 μm, and the height of a single cylinder is 80 μm;

[0044] Then place the aluminum alloy surface with microstructure in acetone, absolute ethanol and distilled water fo...

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Abstract

The invention relates to a preparation method of an aluminum alloy bionic anti-icing surface. By means of enlightening of the surface hydrophobic self-cleaning characteristic of natural organisms, a laser processing and anodic oxidizing method is adopted, and the super hydrophobic surface with a bionic micro cylindrical array structure is prepared. According to the method, firstly a laser ablationprocessing process is adopted, the purpose is to design and change the morphology of the aluminum alloy surface, and the regular micro cylindrical array structure is prepared; and the aluminum alloysurface of the micro cylindrical array structure is dipped into electrolyte to be subjected to anodic oxidizing treatment, the aluminum alloy surface is made to form an oxidization layer with low surface energy, and therefore the super hydrophobic characteristic is acquired. The preparation method of the bionic and super hydrophobic aluminum alloy anti-icing surface is easy to operate, controllable in experiment parameter and low in cost, the method can be used for manufacturing surfaces with the super hydrophobic performance in batches, and the prepared surface has good anti-icing performanceand good mechanical stability.

Description

technical field [0001] The invention belongs to the surface modification technology of metal materials, in particular to a method for preparing a bionic super-hydrophobic surface by one-step anodic oxidation, in particular to a method for preparing an aluminum alloy bionic anti-icing surface. Background technique [0002] For many years, the hazards caused by ice cover have brought serious threats to people's production and life. For example, ice cover of high-voltage transmission lines will cause a large number of power grids to collapse, disconnection, and substation shutdown; ice cover on the surface of aircraft will cause the maximum lift of the aircraft to decrease. , flight resistance increases, maneuverability decreases, and stability weakens, which pose a great threat to flight safety; in addition, the ice cover of important equipment will also bring great safety hazards to people's lives. The problem of surface ice cover has become a serious challenge, which has att...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/16C25D11/06
CPCC25D11/16C25D11/06
Inventor 刘燕张开腾李淑一韩志武任露泉
Owner JILIN UNIV
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