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Method for preparing aluminum alloy super-hydrophobic functional surface by laser marking machine

A laser marking and aluminum alloy technology, which is applied in the coating process of metal materials, etc., can solve the problems of high cost of femtosecond lasers and harsh working environment requirements, and achieve the effect of simple preparation process, low processing cost and easy availability of raw materials

Inactive Publication Date: 2017-02-15
JIANGSU UNIV OF TECH
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Problems solved by technology

[0006] The purpose of the present invention is to overcome the defects of high cost of femtosecond lasers and harsh requirements on the working environment in the prior art, and provide a method for preparing an aluminum alloy superhydrophobic functional surface by a laser marking machine

Method used

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  • Method for preparing aluminum alloy super-hydrophobic functional surface by laser marking machine
  • Method for preparing aluminum alloy super-hydrophobic functional surface by laser marking machine
  • Method for preparing aluminum alloy super-hydrophobic functional surface by laser marking machine

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Embodiment 1

[0031] The method for preparing an aluminum alloy super-hydrophobic functional surface by the laser marking machine of this embodiment comprises the following steps:

[0032] (1) Pretreatment: the 6061 aluminum alloy samples to be treated are subjected to 400 # 、1000 # 、3000 # Grinding with sandpaper, the polished samples were ultrasonically cleaned with absolute ethanol and distilled water in sequence, the ultrasonic temperature was 40-60°C, the time was 20-30min, and then dried in a constant temperature oven at 60-80°C for 5-10min to obtain clean aluminum alloy samples;

[0033] (2) Laser micromachining: Use an infrared laser marking machine to adjust the relevant process parameters to scan the surface of the sample; the wavelength of the laser is 1064nm, the maximum laser output power is 16W, the laser frequency is 20kHz, and the current used during processing The density is 13A, the laser aperture is 80μm, the single exposure time is 5ms for dot matrix processing, and t...

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Abstract

The invention belongs to the technical field of preparation of metal-based microstructural functional surfaces. A method for preparing an aluminum alloy super-hydrophobic functional surface by a laser marking machine comprises the following steps: (1) grinding, ultrasonically cleaning and drying an aluminum alloy sample to obtain a clean aluminum alloy sample; (2) performing laser micromachining: performing laser surface scanning treatment on the surface of the sample by adopting an infrared laser marking machine; and (3) performing silanization treatment: performing ultrasonic cleaning on the sample subjected to the laser micromachining, placing the cleaned sample into an ethyl alcohol solution of cetyl trimethyl silane for soaking to form a layer of hydrophobic film on the surface of the sample, and flushing and drying the sample to obtain a product. The product has the characteristics that (1) preparation can be realized under an atmospheric environment by adopting a method for combining the laser micromachining technology and the silanization treatment technology; (2) the machining cost of the method disclosed by the invention is lower than that of a femtosecond laser device, and machining parameters are independently controllable; and (3) the obtained product is of a structure with a rough surface, and the contact angle for water is about 150 degrees.

Description

technical field [0001] The invention belongs to the technical field of metal-based microstructure functional surface preparation, and in particular relates to a method for preparing an aluminum alloy superhydrophobic functional surface by a laser marking machine. Background technique [0002] Aluminum and its alloys are very important engineering metal materials. Because of their light weight, high specific strength, easy processing and excellent corrosion resistance, they are widely used in automobiles, ships, construction, aerospace and machinery manufacturing, etc. industrial field. However, for the marine transportation industry, ships and other marine transportation tools have been working in harsh seawater media and marine environments for a long time. Due to the presence of reducing ions such as chloride ions, it is easy to cause passivation instability of aluminum and its alloys in seawater. , so that the corrosion resistance of the material is reduced; at the same ...

Claims

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Application Information

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IPC IPC(8): C23F4/00C23C22/02C23C22/78
CPCC23C22/02C23C22/78C23C2222/20C23F4/00
Inventor 叶霞黄超姚爱斐杨晓红范振敏刘群超
Owner JIANGSU UNIV OF TECH
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