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Preparation method of amorphous alloy functionalized surface based on laser micro-texture

An amorphous alloy, micro-texture technology, applied in laser welding equipment, metal processing equipment, welding equipment and other directions, can solve the problems of increased cost, no performance regulation, no super-hydrophobicity, etc., to reduce the heat-affected zone. , the effect of reducing the thermal effect

Pending Publication Date: 2021-12-17
FOSHAN NANHAI GUANGDONG TECH UNIV CNC EQUIP COOP INNOVATION INST +1
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  • Summary
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  • Description
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  • Application Information

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Problems solved by technology

The surface hardness of the zirconium-based amorphous alloy prepared by it is relatively high, but a large amount of silicon carbide medium needs to be introduced, and the cost is too high
Chinese patent CN112553569B discloses a method for improving the surface hardness of zirconium-based amorphous alloys by nanosecond laser carbonization. The introduction of zirconium carbide phase can greatly improve its surface hardness, but this invention uses near-infrared (1064nm) nanosecond pulsed laser irradiation, the pulse frequency is as high as 600-800kHz, and zirconium carbide is obtained under high temperature conditions by adding graphite powder Phase, the cost is greatly increased, and superhydrophobicity has not been achieved
[0005] Admittedly, laser processing has been proven to be an efficient means in the field of amorphous alloy processing and manufacturing, but there are still some problems to be solved. Control related properties, such as how to realize the conversion between hydrophilic and hydrophobic properties. Second, the existing laser method is not efficient in preparation, and the surface reliability and durability obtained at the same time still need to be improved.

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  • Preparation method of amorphous alloy functionalized surface based on laser micro-texture
  • Preparation method of amorphous alloy functionalized surface based on laser micro-texture
  • Preparation method of amorphous alloy functionalized surface based on laser micro-texture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Step 1): the zirconium-based bulk amorphous alloy Zr 41.2 Ti 13.8 Cu 12.5 Ni 10 be 22.5 Cut out a size of 30mm×30mm, then ultrasonically clean with acetone, absolute ethanol, and deionized water for 10 minutes to remove pollutants on the surface of the substrate, and then dry it in a nitrogen stream;

[0036] Step 2): Using an ultraviolet nanosecond pulse laser to perform laser microtexturing on the substrate surface treated in step 1), the selected laser parameters are as follows: the pulse width is 20ns, the laser wavelength is 355nm, the pulse repetition frequency is 10kHz, and the laser power 1W, pulse energy 0.1mJ, laser power density 1.0GW / cm 2 , the effective spot diameter after focusing is about 25 μm, the laser scanning speed is 20mm / s, the laser beam scanning area is 12mm×12mm, and the laser-prepared substrate is put into absolute ethanol for ultrasonic cleaning for 12 minutes;

[0037] Step 3): Put the substrate obtained in step 2) into a vacuum drying o...

Embodiment 2

[0039] Step 1): the zirconium-based bulk amorphous alloy Zr 41.2 Ti 13.8 Cu 12.5 Ni 10 be 22.5 Cut out a size of 30mm×30mm, then ultrasonically clean with acetone, absolute ethanol, and deionized water for 10 minutes to remove pollutants on the surface of the substrate, and then dry it in a nitrogen stream;

[0040] Step 2): Using an ultraviolet nanosecond pulse laser to perform laser microtexturing on the substrate surface treated in step 1), the selected laser parameters are as follows: the pulse width is 20ns, the laser wavelength is 355nm, the pulse repetition frequency is 10kHz, and the laser power 1W, pulse energy 0.1mJ, laser power density 1.0GW / cm 2 , the effective spot diameter after focusing is about 25 μm, the laser scanning speed is 20mm / s, the laser beam scanning area is 12mm×12mm, and the laser-prepared substrate is put into absolute ethanol for ultrasonic cleaning for 12 minutes;

[0041] Step 3): Put the substrate obtained in step 2) into a vacuum drying o...

Embodiment 3

[0043] Step 1): the zirconium-based bulk amorphous alloy Zr 41.2 Ti 13.8 Cu 12.5 Ni 10 be 22.5 Cut out a size of 30mm×30mm, then ultrasonically clean with acetone, absolute ethanol, and deionized water for 10 minutes to remove pollutants on the surface of the substrate, and then dry it in a nitrogen stream;

[0044] Step 2): Using an ultraviolet nanosecond pulse laser to perform laser microtexturing on the substrate surface treated in step 1), the selected laser parameters are as follows: the pulse width is 20ns, the laser wavelength is 355nm, the pulse repetition frequency is 10kHz, and the laser power 1W, pulse energy 0.1mJ, laser power density 1.0GW / cm 2 , the effective spot diameter after focusing is about 25 μm, the laser scanning speed is 20mm / s, the laser beam scanning area is 12mm×12mm, and the laser-prepared substrate is put into absolute ethanol for ultrasonic cleaning for 12 minutes;

[0045] Step 3): Put the substrate obtained in step 2) into a vacuum drying o...

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Abstract

The invention discloses a preparation method of an amorphous alloy functionalized surface based on a laser micro-texture. The preparation method mainly comprises the following steps: 1) cleaning a substrate, specifically, cleaning the amorphous alloy substrate; 2) processing a laser surface micro-texture, specifically, processing a micro-nano structure on the surface of the amorphous alloy substrate by using an ultraviolet nanosecond laser beam; and 3) carrying out low-temperature heat treatment, specifically, carrying out low-temperature heat treatment on the amorphous alloy substrate treated in the step 2) in a vacuum drying oven. According to the preparation method disclosed by the invention, through the combined action of ultraviolet laser processing and low-temperature heat treatment, the prepared amorphous alloy surface shows the change of the surface micro-nano structure and the surface chemistry, so that the transformation from super-hydrophilicity to super-hydrophobicity is realized, and the microhardness of the laser micro-texture amorphous alloy surface is also remarkably improved.

Description

technical field [0001] The invention belongs to the field of material processing engineering, and in particular relates to a method for preparing a functionalized surface of an amorphous alloy based on laser micro-texture. [0002] technical background [0003] Amorphous alloys, also known as metallic glasses, have a special microstructure of "short-range order and long-range disorder", exhibiting unparalleled physical and mechanical properties of ordinary crystalline metals, such as high strength, high hardness, and low Young's modulus. Quantity, excellent anti-corrosion / anti-wear properties and excellent magnetic properties, which make amorphous alloys have great potential application prospects in many fields such as machinery, materials, microelectronics and medical devices. Therefore, in the past ten years, the forming and processing technology of amorphous alloys has become a hot research direction for relevant researchers, and many technologies including copper mold cas...

Claims

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Application Information

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IPC IPC(8): B23K26/352B23K26/60
CPCB23K26/355B23K26/60
Inventor 程杨洋王青华王慧鑫
Owner FOSHAN NANHAI GUANGDONG TECH UNIV CNC EQUIP COOP INNOVATION INST
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