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Method for preparing super-hydrophobic zinc alloy surface through infrared lasers

An infrared laser, zinc alloy technology, applied in laser welding equipment, devices for coating liquid on surfaces, special surfaces, etc., can solve the problem of high cost of femtosecond/nanosecond lasers, pollution of acid-base reagent environment, and low processing efficiency and other problems, to achieve good and stable superhydrophobic performance, overcome flammability, and have good surface microstructure quality and stability.

Inactive Publication Date: 2019-01-04
JIANGSU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned several laser etching methods can obtain better superhydrophobic surfaces, but there are also certain problems, such as the high cost of using femtosecond / nanosecond lasers, low processing efficiency, and environmental pollution by acid-base reagents, etc.

Method used

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  • Method for preparing super-hydrophobic zinc alloy surface through infrared lasers
  • Method for preparing super-hydrophobic zinc alloy surface through infrared lasers
  • Method for preparing super-hydrophobic zinc alloy surface through infrared lasers

Examples

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Embodiment 1

[0028] The method for preparing the superhydrophobic zinc alloy surface by infrared laser of the present embodiment comprises the following steps:

[0029] (1) Pretreatment: The zinc alloy sample of 20mm×20mm×0.5mm is ultrasonically cleaned with absolute ethanol and deionized water in sequence, the cleaning temperature is 55°C, and the single cleaning is 5min, and the drying condition is 130°C Dry in a constant temperature oven for 15 minutes to obtain a pretreated zinc alloy;

[0030] (2) Laser etching: use an infrared laser marking machine to prepare microstructures on the surface of the pretreated zinc alloy obtained in step (1). The process parameters for laser etching are: laser frequency 20kHz, laser power 10.5w, laser wavelength 1064nm, scanning Speed ​​50mms -1 , The scanning distance is 150μm, and the single exposure time is 4ms, and the groove-like microstructure is etched to obtain the microstructure zinc alloy;

[0031] (3) Post-etching treatment: ultrasonically ...

Embodiment 2

[0035] The method for preparing the superhydrophobic zinc alloy surface by infrared laser of the present embodiment comprises the following steps:

[0036] (1) Pretreatment: The zinc alloy sample of 20mm×20mm×0.5mm is ultrasonically cleaned with absolute ethanol and deionized water in sequence, the cleaning temperature is 70°C, and the single cleaning is 8min, and the drying condition is 110°C Dry in a constant temperature oven for 10 minutes to obtain a pretreated zinc alloy;

[0037] (2) Laser etching: use an infrared laser marking machine to prepare microstructures on the surface of the pretreated zinc alloy obtained in step (1), the process parameters of laser etching are: laser frequency 20kHz, laser power 12w, laser wavelength 1064nm, scanning speed 100mms -1 , The scanning distance is 200μm, and the single exposure time is 2ms, and the groove-like microstructure is etched to obtain the microstructure zinc alloy;

[0038] (3) Post-etching treatment: ultrasonically clea...

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Abstract

The invention belongs to the technical field of metal matrix surface modifying, and particularly relates to a method for preparing a super-hydrophobic zinc alloy surface through infrared lasers. The method comprises the following steps that (1) a zinc alloy surface is washed and dried, and a pretreated zinc alloy is obtained; (2) a microstructure is etched on the surface of the pretreated zinc alloy through an infrared laser marking machine, and a microstructure zinc alloy is obtained; (3) the microstructure zinc alloy is washed and dried, and a clean microstructure zinc alloy is obtained; and(4) the clean microstructure zinc alloy is immersed in a stearic acid absolute ethyl alcohol solution to be subjected to constant-temperature modification and then is washed and dried, and the super-hydrophobic zinc alloy surface is obtained. According to the method, the defect that the zinc alloy is flammable is overcome, the zinc alloy surface is not ignited in the process for preparing the microstructure through the lasers, and the quality and stability of the prepared surface microstructure are good.

Description

technical field [0001] The invention belongs to the technical field of metal-based surface modification, and in particular relates to a method for preparing a superhydrophobic zinc alloy surface by an infrared laser. Background technique [0002] At present, zinc is second only to copper and aluminum in non-ferrous metal consumption. Zinc has good wear resistance, corrosion resistance, room temperature mechanical properties and electromagnetic field resistance, etc., and can be made into alloys with various metals with excellent properties. Zinc alloys are widely used in automobiles, construction, household appliances, ships, light industry, machinery, batteries and other industries. In the case of radio frequency interference, zinc plate is a very effective shielding material, and because zinc is non-magnetic, it is suitable for instrument parts and instrument housings. However, due to the hydrophilicity of metals, the application of zinc in some special occasions is limi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D5/08B05D7/14B05D3/00B23K26/352B23K26/60B23K103/08
CPCB05D3/002B05D5/08B05D7/14B23K26/352B23K26/60
Inventor 叶霞顾江徐伟刘群超王泽杨晓红范振敏张鹏
Owner JIANGSU UNIV OF TECH
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