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Method for preparing aluminum alloy super-hydrophobic and self-cleaning surface by using ultra-short pulse laser

A short-pulse laser, aluminum alloy technology, applied in the field of surface modification of metal substrates, to achieve the effects of convenient operation, stable performance, and increased use range

Active Publication Date: 2015-09-16
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

[0005] Aiming at the difficulties and problems existing in the superhydrophobic and self-cleaning functions of the aluminum alloy surface prepared in the prior art, the purpose of the present invention is to provide a preparation of a multifunctional aluminum alloy surface with simple process, high processing efficiency, low cost and green environmental protection method

Method used

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  • Method for preparing aluminum alloy super-hydrophobic and self-cleaning surface by using ultra-short pulse laser
  • Method for preparing aluminum alloy super-hydrophobic and self-cleaning surface by using ultra-short pulse laser
  • Method for preparing aluminum alloy super-hydrophobic and self-cleaning surface by using ultra-short pulse laser

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Embodiment 1

[0043] A method for preparing an aluminum alloy superhydrophobic self-cleaning surface using a short-pulse laser in this embodiment includes the following specific steps:

[0044] 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;

[0045] 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, and the surface of the sample is submerged with deionized water with a resistivity of 18.25 megohms. Minutes, and then cle...

Embodiment 2

[0053] A method for preparing an aluminum alloy superhydrophobic self-cleaning surface using a short-pulse laser in this embodiment includes the following specific steps:

[0054] 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;

[0055] 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 ...

Embodiment 3

[0063] A method for preparing an aluminum alloy superhydrophobic self-cleaning surface using a short-pulse laser in this embodiment includes the following specific steps:

[0064] 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;

[0065] 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 ...

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Abstract

The present invention relates to a method for preparing an aluminum alloy super-hydrophobic and self-cleaning surface by using ultra-short pulse laser, and belongs to the technical field of metal substrate surface modification. According to the method, an aluminum alloy sample is subjected to polishing pretreatment, the sample surface is cleaned respectively with deionized water and dehydrated alcohol, then blow drying with cold wind or air drying is performed, a laser processing technology is utilized, short pulse laser is used to adjust the relevant process parameters, the sample is subjected to a surface treatment, countless micro structures are processed on the sample surface, and after completing the processing, the processed sample is placed into an electric heating drying box to bake so as to obtain the aluminum alloy super-hydrophobic and self-cleaning surface having the micron-scale papillary structure, wherein the surface has characteristics of good super-hydrophobicity and excellent self-cleaning function. The preparation method of the present invention has characteristics of simple process, convenient operation, high efficiency, low energy consumption, low cost, green environmental protection, and easy industrial application achieving.

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 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 a short pulse laser . 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 attention. Due to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F3/00
Inventor 吴颖刘顿赵城彼得·班尼特陈列翟中生娄德元杨奇彪关来庆
Owner 金顿激光科技(佛山)有限公司
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