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Method for etching super-hydrophobic aluminum alloy surface by laser and alkali solution recombination

A technology of aluminum alloy surface and laser etching, which is applied in laser welding equipment, metal processing equipment, manufacturing tools, etc., can solve the problems of uncontrollable surface quality and poor hydrophobicity of chemical etching, and achieve stable and long-term superhydrophobic performance, Strong self-cleaning performance, not easy to wear

Inactive Publication Date: 2019-01-22
JIANGSU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention mainly provides a method for combined etching of superhydrophobic aluminum alloy surface by laser and alkaline solution, which overcomes the defects of uncontrollable surface quality and poor hydrophobic performance of existing chemical etching

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  • Method for etching super-hydrophobic aluminum alloy surface by laser and alkali solution recombination
  • Method for etching super-hydrophobic aluminum alloy surface by laser and alkali solution recombination
  • Method for etching super-hydrophobic aluminum alloy surface by laser and alkali solution recombination

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Embodiment 1

[0037] The method for combined etching of superhydrophobic self-cleaning aluminum alloy surface by infrared laser and alkali solution in this embodiment comprises the following steps:

[0038] (1) Pretreatment: The 1060 aluminum alloy sample of 20mm×20mm×2mm was ultrasonically cleaned with absolute ethanol and distilled water in sequence, the cleaning temperature was 60°C, and the single cleaning was 4min, and the drying condition was a constant temperature of 120°C Dry in an oven for 15 minutes to obtain a pretreated aluminum alloy;

[0039] (2) Laser etching: use an infrared laser marking machine to etch the microstructure on the surface of the pretreated aluminum alloy obtained in step (1). The process parameters for laser etching are: laser power 30w, laser frequency 20kHz, laser wavelength 1064nm, scan speed 100mm s -1 , The scanning distance is 200 μm, and the grating-like microstructure is etched to obtain laser-etched aluminum alloy;

[0040] (3) Pre-treatment of alk...

Embodiment 2

[0046] The method for combined etching of superhydrophobic self-cleaning aluminum alloy surface by infrared laser and alkali solution in this embodiment comprises the following steps:

[0047] (1) Pretreatment: 1060 aluminum alloy samples of 20 mm × 20 mm × 2 mm were ultrasonically cleaned using absolute ethanol and distilled water in sequence, the cleaning temperature was 70 ° C, and the single cleaning time was 10 min. The drying condition was a constant temperature of 145 ° C Dry in an oven for 30 minutes to obtain a pretreated aluminum alloy;

[0048] (2) Laser etching: use an infrared laser marking machine to etch the microstructure on the surface of the pretreated aluminum alloy obtained in step (1). The process parameters for laser etching are: laser power 30w, laser frequency 20kHz, laser wavelength 1064nm, scan speed 100mm s -1 , The scanning distance is 200 μm, and the grating-like microstructure is etched to obtain laser-etched aluminum alloy;

[0049] (3) Pre-tre...

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Abstract

The invention particularly relates to a method for etching a super-hydrophobic aluminum alloy surface by laser and alkali solution recombination. The method includes the steps: (1) cleaning and dryingthe aluminum alloy surface to obtain a clean aluminum alloy; (2) etching a micro-structure on the clean aluminum alloy surface by an infrared laser marking machine to obtain a laser etched aluminum alloy; (3) cleaning and drying the laser etched aluminum alloy to obtain a clean laser etched aluminum alloy; (4) etching the clean laser etched aluminum alloy surface by alkali solution to obtain a composite structure aluminum alloy; (5) cleaning and drying the composite structure aluminum alloy to obtain a clean composite structure aluminum alloy; (6) immersing the clean composite structure aluminum alloy into stearic acid absolute ethyl alcohol solution for constant temperature modification, and then cleaning and drying the clean composite structure aluminum alloy to obtain an aluminum alloysuper-hydrophobic surface. The method overcomes the shortcomings that the quality of an existing chemical etched surface cannot be controlled, and the existing chemical etched surface is poor in hydrophobic performance. The prepared surface is good in micro-structure quality and stability.

Description

technical field [0001] The invention belongs to the technical field of metal-based surface modification, and in particular relates to a method for combining laser and alkali solution to etch the surface of superhydrophobic aluminum alloy. Background technique [0002] 1060 aluminum alloy is widely used in daily life and has the advantages of high plasticity, corrosion resistance, electrical conductivity and thermal conductivity. It is widely used in chemical instruments, kitchen utensils, clock surfaces and dials, and building exterior decoration and other fields. Due to the hydrophilicity of the aluminum alloy itself, water stains and pollutants are easily adhered to the surface of the aluminum alloy product, and the surface cleanliness and corrosion resistance are reduced. Therefore, it is particularly important to prepare superhydrophobic aluminum alloy surfaces to improve their self-cleaning and corrosion resistance properties. [0003] In nature, phenomena such as lotu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/362C23F1/00C23F1/36
CPCB23K26/361B23K26/362C23F1/00C23F1/36
Inventor 叶霞顾江徐伟刘群超范振敏王泽杨晓红张鹏
Owner JIANGSU UNIV OF TECH
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