Method of utilizing laser plasma thin filaments to prepare metal multifunctional surface

A laser plasma and plasma technology, applied in laser welding equipment, metal processing equipment, welding equipment, etc., can solve the problems of easy damage to the surface, complicated methods, short life, etc., and achieve durable surface functions, simple production process, The effect of improving material performance

Inactive Publication Date: 2016-11-23
CHANGCHUN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are many separate preparation methods for metal surface optical modification (enhancing light absorption) and wettability modification (realizing superhydrophobic and self-cleaning properties), the method of functional integration is more complicated. For example, it is necessary to first prepare rough or A surface with a surface microstructure, followed by a low-energy material coating on a rough metal surface, in order to achieve super-hydrophobic properties [JOURNAL OF COLLOID AND INTERFACE SCIENCE 208, 287–294 (1998)], and this surface is easily damaged and has a short life

Method used

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  • Method of utilizing laser plasma thin filaments to prepare metal multifunctional surface
  • Method of utilizing laser plasma thin filaments to prepare metal multifunctional surface
  • Method of utilizing laser plasma thin filaments to prepare metal multifunctional surface

Examples

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Embodiment 1

[0034] The metal sample in this embodiment is metal aluminum, and the aluminum sample is placed under the filament induced by the femtosecond pulse laser. The center wavelength of the femtosecond pulse laser selected in this example is 800nm, the repetition frequency is 1kHz, and the pulse width is 50fs. Horizontally polarized femtosecond laser with a single pulse energy of 3.5mJ passes through a focusing lens with a focal length of 1m to form a plasma filament with a length of about 11cm. The sample is fixed on the three-dimensional translation stage, and the fixed direction of the translation stage is perpendicular to the plasma filament, so that the plasma filament can irradiate the surface of the metal sample vertically. The distance between the sample processing position and the focusing lens is 95cm. By moving the three-dimensional translation stage, the scanning speed is 5mm / s, changing the scanning distance to 0.04mm, and prepared the surface of the micro-nano composit...

Embodiment 2

[0036] The sample used in this embodiment is nickel metal, the laser parameters and filamentation parameters are the same as in Example 1, the scanning speed of the translation stage is 5 mm / s, and the scanning distance is 0.04 mm. A multi-functional surface with a columnar typical micro-nano composite structure is obtained, and the microscopic photos of the surface morphology are as follows Figure 7-8 , Figure 8 for Figure 7 Zoom in on the image, the superhydrophobic test results are shown as Figure 9-10 As shown (the contact angle of the original surface is 89.7°, the contact angle of the treated surface is 161.3°, and the rolling angle is 14.5°). Broad-spectrum high-absorption functional characterization such as Figure 11 shown.

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Abstract

The invention discloses a method of utilizing laser plasma thin filaments to prepare a metal multifunctional surface. Femtosecond laser plasma thin filaments carry out irradiation treatment on the surface of metal to integrate broadband spectrum high light absorption optical property with super-hydrophobic self-cleaning wetting property at one step, and any after-treatment including film coating (hydrophobic film) is not needed. Compared with the traditional method, the method has the following advantages: the surface functional characteristics are lasting and durable, the manufacturing flow is simple, and the production efficiency is high. The metal multifunctional surface can be applied in the fields of outdoor solar energy, a biological detector and a chip laboratory.

Description

technical field [0001] The invention relates to the field of metal surface modification, in particular to a method for treating metal surface modification with ultrashort pulse plasma filaments. Background technique [0002] Metal materials are mostly used in industry and construction. With the development of micro-processing technology and the gradual maturity of its theory, more and more scientific workers are turning their attention to the research of metal surface modification. Through different means and methods, metal surface can be prepared The micro-nano structure produced can change the surface properties of the original metal. The novel characteristics make it have practical application value in different fields (such as solar energy absorption, high-efficiency thermal radiation source, thermal radiation conversion, and biological detectors, etc.). [0003] The currently published patent documents on the use of lasers to prepare superhydrophobic self-cleaning surfa...

Claims

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Application Information

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IPC IPC(8): B23K26/352
Inventor 陶海岩林景全宋琳
Owner CHANGCHUN UNIV OF SCI & TECH
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