Method for preparation of aluminium alloy superhydrophobic self-cleaning surface by use of 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 being unsuitable for large-scale industrial production and high processing costs, and achieve the effects of easy control of process parameters, simple process and high efficiency

Active Publication Date: 2015-09-16
金顿激光科技(佛山)有限公司
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  • Abstract
  • Description
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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 on

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  • Method for preparation of aluminium alloy superhydrophobic self-cleaning surface by use of ultrafast laser
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  • Method for preparation of aluminium alloy superhydrophobic self-cleaning surface by use of 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 present invention relates to a method for preparation of aluminium alloy superhydrophobic self-cleaning surface by use of ultrafast laser, and belongs to the metal substrate surface modification technical field. The method is as follows: first, an aluminium alloy sample is polished for pretreatment, the sample surface is cleaned with deionized water and absolute ethyl alcohol, after the sample surface is cleaned, the sample is blow-dried by cold air or dried in air, and then by use of laser processing technique, after regulation of relevant process parameters by use of the ultrafast laser, the sample surface is processed, the sample surface is processed to form countless micro structures, after the processing is completed, the processed sample is put into an electrically heated drying oven for baking to obtain aluminium alloy super hydrophobic surface provided with micron-scale or nanoscale mastoid-shaped structures. The surface has the function of self-cleaning and excellent friction resistance, and corrosion resistance. The preparation method is simple in process, convenient in operation, high in efficiency, less in energy consumption, low in cost, green, and environmentally friendly, and the industrial application is easy to realize.

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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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
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