Method for manufacturing long-term efficient anti-reflection micro-nano structure on copper surface and application

Abstract

The invention belongs to the technical field of high heat conduction media, and discloses a method for manufacturing a long-term efficient anti-reflection micro-nano structure on a copper surface. The method comprises the following steps: polishing red copper and/or a copper elementary substance sample; placing the polished sample on a laser processing platform, performing preset path scanning on the sample by using pulse laser to obtain a sample surface with a micro-nano composite structure, and packaging the sample into a vacuum bag; and placing the obtained sample in a sample furnace of magnetron sputtering equipment, and growing a layer of silicon dioxide protective film on the surface of the micro-nano structure to obtain the long-term efficient anti-reflection micro-nano structure. According to the method, the micro-nano structure with the anti-reflection characteristic is prepared on the copper surface, and then a layer of inert film is grown on the surface of the micro-nano structure for protection through a film coating method, so that the micro-nano structure has the long-term efficient anti-reflection function characteristic; and the thickness of the silicon dioxide protection layer is flexibly controlled by controlling the coating time of magnetron sputtering, the strength performance of the protection layer is improved, and the problem of failure of the anti-reflection structure on the copper surface is effectively solved.

Description

technical field [0001] The invention belongs to the technical field of high thermal conductivity media, and in particular relates to a method and application for manufacturing a long-term high-efficiency anti-reflection micro-nano structure on a copper surface. Background technique [0002] At present, copper has excellent thermal conductivity. Red copper, also known as red copper, is industrial pure copper. Its electrical conductivity and thermal conductivity are second only to precious metal silver. It is widely used in the preparation of electrical, thermal and heat dissipation devices. , LD and other power cooling devices are the most commonly used high thermal conductivity medium. [0003] However, neither copper nor copper alloys can efficiently absorb visible light, near-infrared light, and long-wave infrared light. The average reflectance of copper in the visible light band (400nm-700nm) is greater than 50%, and the average reflectance of copper from wavelength 700n...

AI Technical Summary

Problems solved by technology

However, the problem of reflectivity degradation over time always exists: after 3-4 weeks in the air, the color of the microstructure surface changes from dark black to purple or green, which is due to the oxidation of the copper surface microstructure

In order to prevent the oxidation of the micro-nano structure on the surface, resulting in the failure of the anti-reflection effect

[0007] Through the above analysis, the existing problems and defects of the prior art are: due to the oxidation of the copper surface microstructure, the color of the microstructure surface changes from dark black to purple or green after being placed in the air for 3-4 weeks, and the reflectivity changes with time. The problem of degradation is always there

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