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Method for preparing micro-nano periodic structures on the surface of amorphous alloys by nanosecond laser irradiation

A periodic structure and amorphous alloy technology, applied in laser welding equipment, nanotechnology, welding equipment, etc., can solve the problems of difficult to achieve industrial production, complex femtosecond laser processing process, high cost, etc., and achieve low cost and high processing cost. Simple method, effect of periodic structure rules

Active Publication Date: 2022-01-28
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, compared with the nanosecond laser, the femtosecond laser processing process is complex and costly, and it is difficult to meet the requirements of industrial production

Method used

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  • Method for preparing micro-nano periodic structures on the surface of amorphous alloys by nanosecond laser irradiation
  • Method for preparing micro-nano periodic structures on the surface of amorphous alloys by nanosecond laser irradiation
  • Method for preparing micro-nano periodic structures on the surface of amorphous alloys by nanosecond laser irradiation

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Embodiment 1

[0031] The method for preparing the micro-nano periodic structure on the surface of the amorphous alloy by nanosecond laser irradiation in this embodiment, the specific implementation steps are as follows:

[0032] (1) The Zr to be processed 41.2 Ti 13.8 Cu 12.5 Ni 10 be 22.5 The amorphous alloy samples were mechanically ground and polished, and ultrasonically cleaned with ethanol and deionized water for about 10 minutes at a temperature of 50-60°C, and then air-dried at room temperature.

[0033] (2) Using argon as a shielding gas, the laser beam is focused on the surface of the amorphous alloy, the laser irradiation parameters are set by a computer program, and then the laser irradiation is performed to form a periodic micro-nano structure on the surface. The laser irradiation process parameters used are: argon pressure is 0.01MPa, laser wavelength is 1064nm, pulse width is 7ns, repetition frequency is 600kHz, and laser energy density is 60mJ / cm 2 , the scanning speed i...

Embodiment 2

[0036] The method for preparing the micro-nano periodic structure on the surface of the amorphous alloy by nanosecond laser irradiation in this embodiment, the specific implementation steps are as follows:

[0037] (1) The Zr to be processed 41.2 Ti 13.8 Cu 12.5 Ni 10 be 22.5 The amorphous alloy samples were mechanically ground and polished, and ultrasonically cleaned with ethanol and deionized water for about 10 minutes at a temperature of 50-60°C, and then air-dried at room temperature.

[0038] (2) Using argon as a protective gas, focus the laser beam on the surface of the amorphous alloy, set the laser irradiation parameters by the computer program, and draw straight lines with equal intervals in the computer software, the specific interval value is 6 μm, and then perform laser irradiation. Illuminated to form a large-area surface micro-nano periodic structure. The laser irradiation process parameters used are: argon pressure is 0.01MPa, laser wavelength is 1064nm, pu...

Embodiment 3

[0041] The method for preparing the micro-nano periodic structure on the surface of the amorphous alloy by nanosecond laser irradiation in this embodiment, the specific implementation steps are as follows:

[0042] (1) The Zr to be processed 41.2 Ti 13.8 Cu 12.5 Ni10 be 22.5 The amorphous alloy samples were mechanically ground and polished, and ultrasonically cleaned with ethanol and deionized water for about 10 minutes at a temperature of 50-60°C, and then air-dried at room temperature.

[0043] (2) Using argon as a protective gas, focus the laser beam on the surface of the amorphous alloy, set the laser irradiation parameters by the computer program, and draw a circular pattern with a diameter of 300 μm in the computer software, and then perform laser irradiation to form Circular micro-nano periodic structure. The laser irradiation process parameters used are: argon pressure is 0.01MPa, laser wavelength is 1064nm, pulse width is 7ns, repetition frequency is 600kHz, and l...

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Abstract

The invention relates to a method for preparing micro-nano periodic structures on the surface of amorphous alloys by nanosecond laser irradiation, and belongs to the field of micro-nano processing of material surfaces. It includes the following steps: mechanically grinding and polishing the amorphous alloy sample; using argon as a protective gas, preparing a micro-nano periodic structure on the surface of the amorphous alloy by nanosecond laser irradiation, and controlling the trajectory of the laser beam. Micro-nano periodic structures with different shapes and sizes are prepared on the surface of amorphous alloys. The invention utilizes the interference effect between the incident laser light and the surface plasmon excited by it to form a periodic structure with a characteristic size of about 1 μm on the surface of the amorphous alloy; the processing method is simple and the efficiency is high; and the amorphous alloy samples of different compositions can be processed. In this way, it has great application prospects in the fields of superhydrophobicity, wear resistance and drag reduction, micro-nano optics and other fields.

Description

technical field [0001] The invention relates to the field of micro-nano processing of material surfaces, in particular to a method for preparing micro-nano periodic structures on the surface of amorphous alloys by nanosecond laser irradiation, and has great application prospects in the fields of superhydrophobic, wear-resistant and drag-reducing, micro-nano optics and the like. Background technique [0002] Amorphous alloy has a series of excellent properties such as high strength, high Young's modulus, corrosion resistance, etc., and is a new multifunctional material. At the same time, amorphous alloys are isotropic on the atomic scale, which makes them have good processing formability on the micro-nano scale. In recent years, researchers have conducted extensive and in-depth research on the surface microstructure processing of amorphous alloys. However, both traditional diamond turning and micro-EDM will lead to a certain degree of crystallization of amorphous alloy mater...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/352B82Y40/00
CPCB23K26/352B82Y40/00
Inventor 黄虎钱永峰张洪洋张帝刘翰林洪婧
Owner JILIN UNIV
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