Machining method and device for preparing micro-nano two-dimensional structure on surface of workpiece

Abstract

The invention discloses a machining method and device for preparing a micro-nano two-dimensional structure on the surface of a workpiece, and belongs to the field of special machining. In the machining process, a laser ablation and electrochemical deposition coupling method is adopted, a laser beam is focused on the surface of a workpiece substrate, the area and path of laser ablation are controlled through a numerical control system, and a micron-grade structure is machined on the surface of the workpiece substrate; and a tool anode keeps being aligned with the ablation area while laser ablation is conducted, and then a nano structure is deposited on the micron-grade structure in the area of the workpiece substrate. In order to restrain an anodic electric field in a top end area of an electrode to the maximum limit, the tool anode penetrates into an insulated glass pipe to achieve side wall insulating. In addition, the temperature of a solution in an irradiation area is increased through the thermal-mechanical effect of laser light, and meanwhile the strong stirring effect is generated to accelerate circular flow updating of deposition liquid and promote quick and efficient growthof the nano structure. The machining method and device are suitable for efficient machining and manufacturing of the micro-nano two-dimensional structure on the surface of a part.

Description

technical field [0001] The invention relates to the field of surface processing in special processing technology, in particular to a method and device for laser electrochemical composite processing, which is suitable for processing and manufacturing functional surface microstructures. Background technique [0002] In recent years, as a method that can significantly improve the interface performance, surface texture has become a research hotspot in the field of interface science at home and abroad. The progress of microfabrication technology has made it possible to optimize the interface performance by precisely controlling the shape and scale of the texture. become possible. Wettability is one of the important characteristics of solid surfaces, which directly affects the flow and phase transition of surface fluids, and plays a huge role in both nature and human life. On the other hand, as a typical interface Surface wettability also has extremely important research value in...

AI Technical Summary

Problems solved by technology

[0005] The traditional method of preparing biomimetic structure surface based on nanomaterial preparation method and photolithography technology can only obtain nanometer or micron structure, and it is difficult to prepare biomimetic surface with both micron and nanostructure through one method or process. micro-nano structured surface

Although the two-step method can construct a micro-nano composite structure, it usually requires a longer processing cycle, and the preparation process is complicated, the processing cost is expensive, and there is still room for improvement; in terms of application, the prepared super-hydrophobic / hydrophilic surface has certain limitations Due to the limitations of the surface microstructure and the substrate, the adhesion between the surface microstructure and the substrate is low, which will easily lead to the detachment of the superphobic / hydrophilic microstructure on the surface of the substrate, thereby affecting the stability of the superphobic / hydrophilic properties and its application potential.

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