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A method of preparing superhydrophobic self-cleaning surface of aluminum alloy by ultrafast laser

An ultrafast laser and aluminum alloy technology, which is applied in the field of surface modification of metal substrates, can solve the problems of unsuitability for large-scale industrial production and high processing costs, and achieve the effect of easy control of process parameters, simple process, and good superhydrophobic performance

Active Publication Date: 2017-11-14
金顿激光科技(佛山)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, the patent application with the application number 201410788477.0 discloses a method for preparing a superhydrophobic micro-nano structure on the surface of titanium alloy. First, the titanium alloy sample is ultrasonically cleaned with acetone and absolute alcohol respectively to obtain a titanium alloy sample with a clean surface; then Femtosecond laser lithography is performed on the surface of a titanium alloy sample with a clean surface to obtain a titanium alloy sample with a grating-type or well-type or circular blind-hole superhydrophobic micro-nano structure surface in one step; the patent application number 200910183588.8 discloses a A biomimetic metal superwetting cross-scale structure design method and preparation method, the method is designed through complex superhydrophilic theory, the sample to be treated is placed in a high vacuum chamber, and two scans are performed at different angles, and finally a close to The cross-scale microstructure of natural biological surface morphology, but this method needs to strictly control various process parameters, the processing cost is too high, and it is completely unsuitable for industrial large-scale production

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  • A method of preparing superhydrophobic self-cleaning surface of aluminum alloy by ultrafast laser
  • A method of preparing superhydrophobic self-cleaning surface of aluminum alloy by ultrafast laser
  • A method of preparing superhydrophobic self-cleaning surface of aluminum alloy by ultrafast laser

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Embodiment 1

[0042] A method of preparing an aluminum alloy superhydrophobic self-cleaning surface using an ultrafast laser in this embodiment includes the following specific steps:

[0043] Step 1: Polish the 2a12 aluminum alloy to be processed, select a metallographic sample pre-grinding machine with a power of 370W, a grinding disc rotation speed of 450 rpm, and a grinding disc diameter of 230 mm. The polishing process requires an auxiliary diameter of 200 mm and 1000 mesh SiC water sandpaper is used to polish the surface of the aluminum alloy, and the polishing range is 100cm 2 , the polishing time is 10 minutes, and the aluminum alloy sample after surface polishing is obtained;

[0044] Step 2: Clean the aluminum alloy sample after the surface polishing described in step 1 with an ultrasonic cleaner, the ultrasonic frequency of the ultrasonic cleaner is 40 kHz, submerge the surface of the sample with deionized water with a resistivity of 18.25 megohm, and clean continuously at room te...

Embodiment 2

[0052] A method of preparing an aluminum alloy superhydrophobic self-cleaning surface using an ultrafast laser in this embodiment includes the following specific steps:

[0053] Step 1: Polish the 2a12 aluminum alloy to be processed, select a metallographic sample pre-grinding machine with a power of 370W, a grinding disc rotation speed of 450 rpm, and a grinding disc diameter of 230 mm. The polishing process requires an auxiliary diameter of 200 mm and 1000 mesh SiC water sandpaper is used to polish the surface of the aluminum alloy, and the polishing range is 100cm 2 , the polishing time is 10 minutes, and the aluminum alloy sample after surface polishing is obtained;

[0054] Step 2: Clean the aluminum alloy sample after the surface polishing described in step 1 with an ultrasonic cleaner, the ultrasonic frequency of the ultrasonic cleaner is 40 kHz, submerge the surface of the sample with deionized water with a resistivity of 18.25 megohm, and clean continuously at room te...

Embodiment 3

[0062] A method of preparing an aluminum alloy superhydrophobic self-cleaning surface using an ultrafast laser in this embodiment includes the following specific steps:

[0063] Step 1: Polish the 2a12 aluminum alloy to be processed, select a metallographic sample pre-grinding machine with a power of 370W, a grinding disc rotation speed of 450 rpm, and a grinding disc diameter of 230 mm. The polishing process requires an auxiliary diameter of 200 mm and 1000 mesh SiC water sandpaper is used to polish the surface of the aluminum alloy, and the polishing range is 100cm 2 , the polishing time is 10 minutes, and the aluminum alloy sample after surface polishing is obtained;

[0064] Step 2: Clean the aluminum alloy sample after the surface polishing described in step 1 with an ultrasonic cleaner, the ultrasonic frequency of the ultrasonic cleaner is 40 kHz, submerge the surface of the sample with deionized water with a resistivity of 18.25 megohm, and clean continuously at room te...

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Abstract

The invention relates to a method for preparing an aluminum alloy superhydrophobic surface by using an ultrafast laser, and belongs to the technical field of surface modification of metal substrates. In this method, the aluminum alloy sample is first polished and pretreated, and then the surface of the sample is cleaned with deionized water and absolute ethanol respectively. After the process parameters are set, the surface of the sample is treated, and countless microstructures are processed on the surface of the sample. After the processing is completed, the processed sample is placed in an electric drying oven and baked to obtain a micron-scale or nano-scale papillary structure on the surface. The aluminum alloy super-hydrophobic surface has self-cleaning function and excellent friction and corrosion resistance. The preparation method of the invention has the advantages of simple process, convenient operation, high efficiency, less energy consumption, low cost, environmental protection and easy industrial application.

Description

Technical field: [0001] The invention belongs to the technical field of surface modification of metal substrates, and relates to a method for preparing a bionic superhydrophobic self-cleaning surface on an aluminum alloy substrate. More specifically, the invention relates to a method for preparing an aluminum alloy superhydrophobic self-cleaning surface by using an ultrafast laser method. Background technique: [0002] In nature, many sciences and technologies currently used by human beings are inspired and enlightened from nature, and super-hydrophobic surfaces are a very common phenomenon in nature. For example, the surface of the lotus leaf has strong hydrophobicity and self-cleaning function. The revelation of the hydrophobicity of the lotus leaf surface to humans is mainly the study of superhydrophobicity, and self-cleaning is the result of superhydrophobicity. Therefore, the preparation of superhydrophobic surfaces on metal materials has attracted more and more attent...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23F4/00
Inventor 翟中生胡勇涛吴颖刘顿彼得.班尼特陈列娄德元杨奇彪伍义刚王呈祥
Owner 金顿激光科技(佛山)有限公司