Laser processing method for coated armor structure of wear-resistant super-hydrophobic aluminum bronze

Abstract

The invention relates to a laser processing method for a coated armor structure of wear-resistant super-hydrophobic aluminum bronze, which comprises the following steps of: preparing an aluminum bronze workpiece, polishing and cleaning, depositing a ceramic wear-resistant film on the surface of the workpiece by adopting pulse laser, and etching the ceramic wear-resistant film by adopting femtosecond laser, so as to obtain a coated armor structure of the wear-resistant super-hydrophobic aluminum bronze. And then chemical modification of the wear-resistant armor structure is completed through heat treatment, chemical modification of the micro-nano surface structure is completed, and the wear-resistant super-hydrophobic aluminum bronze is obtained. The wear-resistant ceramic film and the wear-resistant armor structure can resist wear together, double guarantee is provided for the internal hydrophobic microstructure, the super-hydrophobic wear resistance of the surface of a component in underwater equipment can be improved, the service life of the component can be prolonged, and the problem of marine organism corrosion is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of metal surface microstructures, and in particular to a laser processing method for a wear-resistant super-hydrophobic aluminum bronze coated armor structure. Background Art

[0002] Aluminum bronze, with its exceptional strength and hardness, is an indispensable key material in the manufacture of ship valves. However, in the microbially rich marine environment, aluminum bronze suffers from severe biocorrosion. This corrosion not only shortens the service life of ship valves but can also impair their performance, ultimately impacting the stable operation of the entire ship system.

[0003] Improving the superhydrophobic properties of aluminum-bronze surfaces has become an effective strategy to inhibit biocorrosion. Constructing surface microstructures is one of the key technologies for achieving superhydrophobic properties. However, the surface microstructures lack wear resistance and are easily worn out during daily use of valves, which leads to the failure of the hydrophobic properties of the aluminum-bronze surfaces. This failure not only weakens the valve's ability to resist biocorrosion, but also shortens its service life and increases maintenance costs. Therefore, developing wear-resistant superhydrophobic surface microstructures to produce robust superhydrophobic structures has become a research focus.

[0004] Currently, the primary technique for improving the wear resistance of superhydrophobic surface structures is spray-coating with a wear-resistant coating. While this method improves wear resistance to a certain extent, the large amount of toxic chemicals used in the spraying process poses a serious threat to human health and the environment. Furthermore, the complex preparation process for wear-resistant coatings makes large-scale production difficult, and the coating's poor adhesion to the substrate limits its long-term durability. Summary of the Invention

[0005] The problem to be solved by the present invention is to provide a laser processing method for a wear-resistant super-hydrophobic aluminum-bronze coated armor structure in response to the above-mentioned deficiencies in the prior art. The method adopts a ceramic anti-wear film and a wear-resistant armor structure to jointly resist wear, providing double protection for the internal hydrophobic microstructure, thereby improving the super-hydrophobic wear resistance of the surface of components in underwater equipment, extending their service life, and solving the problem of marine biological corrosion.

[0006] The above-mentioned object of the present invention is achieved through the following technical solutions: A laser processing method for a wear-resistant super-hydrophobic aluminum bronze coated armor structure comprises the following steps: preparing an aluminum bronze workpiece, first grinding and cleaning it, then using pulsed laser deposition to form a ceramic anti-wear film on the workpiece surface, then using a femtosecond laser to etch the ceramic anti-wear film to form a wear-resistant armor structure, and then performing heat treatment to complete the chemical modification of the wear-resistant armor structure and the chemical modification of the micro-nano surface structure to obtain the wear-resistant super-hydrophobic aluminum bronze.

[0007] Furthermore, during the polishing process, sandpaper with specifications of 80#, 500#, 800#, 1000#, 1500#, and 2000# are used in sequence to polish the surface of the aluminum bronze workpiece step by step until the surface roughness of the workpiece is ≤0.55µm.

[0008] Furthermore, during the cleaning process, the workpiece is sequentially placed in an acetone solution and deionized water, and ultrasonically cleaned for 8 to 12 minutes, and then the workpiece is dried using compressed air.

[0009] Furthermore, during the pulsed laser deposition process, the ceramic anti-wear film is composed of Al2O3 ceramics.

[0010] Furthermore, in the pulse laser deposition process, the laser wavelength of the pulse laser deposition system is controlled to be 248 nm, the laser frequency is 10-20 Hz, the pulse duration is 18-22 ns, and the energy density is 1.5-2.5 J / cm 2 , oxygen pressure 8~12mTorr, pulse 50000 times.

[0011] Furthermore, during the etching process, the armor of the wear-resistant armor structure is a quadrilateral protruding spine structure and contains a hydrophobic microstructure inside.

[0012] Furthermore, during the etching process, the wear-resistant armor structure has an armor thickness of 50-150 μm and an armor side length of 100-900 μm, wherein the armor height is higher than the internal hydrophobic structure to achieve wear protection.

[0013] Furthermore, during the etching process, the femtosecond laser wavelength is controlled to be 1030 nm, the laser frequency is 90-110 kHz, the laser power is 4-6 W, the spot diameter is 18-22 µm, the microstructure etching spacing is 18-22 µm, and the etching speed is 18-22 mm / s.

[0014] Furthermore, during the etching process, the etching is performed under the protection of an argon atmosphere, wherein the gas protection method can prevent oxidation of the aluminum bronze surface.

[0015] Furthermore, during the heat treatment process, a vacuum drying oven is used for heat treatment.

[0016] Furthermore, during the heat treatment process, the heating temperature is controlled to be 150-170°C and the heating time is controlled to be 1.5-2.5 hours. The heat treatment can chemically modify the surface of the aluminum bronze, reduce the surface free energy, and exhibit superhydrophobic properties on the aluminum bronze surface.

[0017] In summary, the beneficial technical effects of the present invention are: 1. The present invention proposes a laser processing method for a wear-resistant super-hydrophobic aluminum bronze coated armor structure. The film is made of a high-hardness Al2O3 ceramic material, which can improve the wear resistance of the armor structure. 2. This invention proposes a laser processing method for a wear-resistant super-hydrophobic aluminum bronze coated armor structure. The ceramic anti-wear film and the wear-resistant armor structure can resist wear and double-protect the hydrophobic microstructure, solving the problem of super-hydrophobic structures being not wear-resistant and prone to failure. 3. The wear-resistant super-hydrophobic structure proposed in the present invention has a simple preparation process and a short cycle, is green and low-cost, can be prepared on a large scale, effectively solves the failure problem of key components such as ship valves caused by wear, reduces the time and cost of component maintenance, and increases the service life of key components. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a flow chart of the method provided in Example 1 of the present invention.

[0019] Figure 2 3. It is a structural schematic diagram of the strong super-hydrophobic surface structure and wetting state of the wear-resistant super-hydrophobic aluminum bronze in Example 1 of the present invention.

[0020] Figure 3 1 is a scanning electron microscope image of the wear-resistant super-hydrophobic aluminum bronze of Examples 2 to 4 of the present invention.

[0021] Figure 4 3 and 4 are scanning electron microscope images of the wear-resistant super-hydrophobic aluminum bronzes of Examples 2, 5, and 6 of the present invention.

[0022] Figure 5 This is a scanning electron microscope image of the wear-resistant super-hydrophobic aluminum bronze of Comparative Example 1 of the present invention.

[0023] Figure 6 Schematic diagram of the linear wear test of Test Example 1 of the present invention. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and functions achieved by the present invention clearer and easier to understand, the present invention is further explained below with reference to the accompanying drawings and specific implementation methods.

[0025] Example 1: Reference Figure 1 and Figure 2, a laser processing method for a wear-resistant super-hydrophobic aluminum bronze coated armor structure disclosed in the present invention includes the following steps: preparing an aluminum bronze workpiece, first grinding and cleaning it, then using pulsed laser deposition to form a ceramic anti-wear film on the workpiece surface, and then using a femtosecond laser to etch the ceramic anti-wear film to form a wear-resistant armor structure, and then completing the chemical modification of the wear-resistant armor structure through heat treatment to complete the chemical modification of the micro-nano surface structure to obtain a wear-resistant super-hydrophobic aluminum bronze.

[0026] Example 2: A laser processing method for a wear-resistant super-hydrophobic aluminum bronze coated armor structure disclosed in the present invention is different from Example 1 in that it includes the following steps: S1: The aluminum bronze sample was polished using 80#, 500#, 800#, 1000#, 1500#, and 2000# sandpaper in a step-by-step manner until the surface roughness of the workpiece was ≤0.55µm, ultimately obtaining a smooth and flat surface. To remove debris and oil stains remaining from the surface polishing, the workpiece was placed in acetone solution and deionized water in turn, ultrasonically cleaned for 10 minutes, and then blown dry with compressed air. S2 uses pulsed laser deposition to form a ceramic anti-wear film on the workpiece surface. The Al2O3 ceramic target is placed on a rotating target holder, and the workpiece obtained in S1 is placed on a rotating sample stage. The pulsed laser deposition system is controlled to have a laser wavelength of 248 nm, a laser frequency of 15 Hz, a pulse duration of 20 ns, and an energy density of 2.0 J / cm 2 , oxygen pressure 10mTorr, pulse 50,000 times, forming a ceramic anti-wear film on the workpiece surface; S3 uses a femtosecond laser system to prepare a wear-resistant armor structure on the workpiece with a ceramic anti-wear film obtained in S2, and performs etching under the protection of an argon atmosphere, controlling the wavelength of the femtosecond laser to be 1030nm, the laser frequency to be 100kHz, the laser power to be 5W, the spot diameter to be 20µm, the microstructure etching spacing to be 20µm, and the etching speed to be 20mm / s, to obtain a wear-resistant armor structure; wherein, the femtosecond laser etches twice along a quadrilateral path, and can simultaneously obtain a wear-resistant spine armor structure and an internal hydrophobic microstructure, that is, the armor of the wear-resistant armor structure is a quadrilateral protruding spine structure and contains a hydrophobic microstructure inside, and the armor height is higher than the internal hydrophobic structure to achieve wear protection, the armor thickness of the wear-resistant armor structure is 50µm, and the armor side length is 100µm; S4 places the workpiece obtained in S3 into a vacuum drying oven for heat treatment, controls the heating temperature of the heat treatment to 160°C and the heating time to 2.0h, realizes chemical modification of the aluminum bronze surface, reduces the surface free energy, and obtains wear-resistant super-hydrophobic aluminum bronze.

[0027] Example 3: A laser processing method for a wear-resistant super-hydrophobic aluminum bronze coated armor structure disclosed in the present invention. The difference from Example 2 is that the armor thickness of the wear-resistant armor structure is 100µm and the armor side length is 100µm.

[0028] Example 4: A laser processing method for a wear-resistant super-hydrophobic aluminum bronze coated armor structure disclosed in the present invention. The difference from Example 2 is that the armor thickness of the wear-resistant armor structure is 150µm and the armor side length is 100µm.

[0029] Example 5: A laser processing method for a wear-resistant super-hydrophobic aluminum bronze coated armor structure disclosed in the present invention. The difference from Example 2 is that the armor thickness of the wear-resistant armor structure is 50µm and the armor side length is 500µm.

[0030] Example 6: A laser processing method for a wear-resistant super-hydrophobic aluminum bronze coated armor structure disclosed in the present invention. The difference from Example 2 is that the armor thickness of the wear-resistant armor structure is 50µm and the armor side length is 900µm.

[0031] For Examples 2 to 4, first control the side length of the quadrilateral during femtosecond etching, such as Figure 3 As shown, the quadrilaterals have side lengths of 100µm, 500µm, and 900µm, respectively. When the armor side length is 100µm, the internal space of each armor piece is small, and the hydrophobic microstructures within are unevenly arranged. This is due to the small range of the femtosecond etching path, the high thermal density of the material, and the melting and adhesion of the hydrophobic microstructures to the armor sidewalls. When the armor side length is 500µm, the armor pieces are interconnected, forming a regular quadrilateral with a tightly packed internal hydrophobic microstructure. The armor structure is taller than the internal hydrophobic microstructures, effectively protecting them from surface wear. When the armor side length exceeds 900µm, the morphology is similar to that of the 500µm side length. The individual armor pieces are larger and contain more hydrophobic microstructures, but the armor is not tightly packed, which is not conducive to wear resistance.

[0032] For Examples 2, 5, and 6, the quadrilateral spacing of femtosecond etching, i.e., the armor thickness, also has a significant impact on the surface morphology and wear resistance. Using the laser parameters of step (3), the surface structures of different armor thicknesses are etched, such as Figure 4As shown in the figure, the quadrilateral spacing is 50µm, 100µm, and 150µm, respectively. When the femtosecond etching quadrilateral spacing is 50µm, the armor thickness is 50µm. The armor structure is higher than the hydrophobic microstructure inside and has a clear spine morphology, which can effectively protect the hydrophobic microstructure when the surface is worn. When the femtosecond etching quadrilateral spacing is 100µm, the armor thickness is 100µm. The armor thickness is too large, so the armor structure does not stand out and is not obvious. When the femtosecond etching quadrilateral spacing exceeds 150µm, due to the large spacing, no obvious armor structure is formed. The hydrophobic microstructure is not located inside the armor and is directly in contact with the external solid and is worn, and cannot resist wear.

[0033] Example 7: A laser processing method for a wear-resistant super-hydrophobic aluminum bronze coated armor structure disclosed in the present invention is different from Example 1 in that it includes the following steps: S1: The aluminum bronze sample was polished using 80#, 500#, 800#, 1000#, 1500#, and 2000# sandpaper in a step-by-step manner until the surface roughness of the workpiece was ≤0.55µm, ultimately obtaining a smooth and flat surface. To remove debris and oil stains remaining from the surface polishing, the workpiece was placed in acetone solution and deionized water in turn, ultrasonically cleaned for 10 minutes, and then blown dry with compressed air. S2 uses pulsed laser deposition to form a ceramic anti-wear film on the workpiece surface. The Al2O3 ceramic target is placed on a rotating target holder, and the workpiece obtained in S1 is placed on a rotating sample stage. The pulsed laser deposition system is controlled to have a laser wavelength of 248 nm, a laser frequency of 10 Hz, a pulse duration of 18 ns, and an energy density of 1.5 J / cm 2 , oxygen pressure 8mTorr, pulse 50,000 times, forming a ceramic anti-wear film on the workpiece surface; S3 uses a femtosecond laser system to prepare a wear-resistant armor structure on the workpiece with a ceramic anti-wear film obtained in S2, and performs etching under the protection of an argon atmosphere, controlling the wavelength of the femtosecond laser to be 1030nm, the laser frequency to be 90kHz, the laser power to be 4W, the spot diameter to be 18µm, the microstructure etching spacing to be 18µm, and the etching speed to be 18mm / s, to obtain a wear-resistant armor structure; wherein, the femtosecond laser etches twice along a quadrilateral path, and can simultaneously obtain a wear-resistant spine armor structure and an internal hydrophobic microstructure, that is, the armor of the wear-resistant armor structure is a quadrilateral protruding spine structure and contains a hydrophobic microstructure inside, and the armor height is higher than the internal hydrophobic structure to achieve wear protection, the armor thickness of the wear-resistant armor structure is 50µm, and the armor side length is 100µm; S4 places the workpiece obtained in S3 into a vacuum drying oven for heat treatment, controls the heating temperature of the heat treatment to 150°C and the heating time to 1.5h, realizes chemical modification of the aluminum bronze surface, reduces the surface free energy, and obtains wear-resistant super-hydrophobic aluminum bronze.

[0034] Example 8: A laser processing method for a wear-resistant super-hydrophobic aluminum bronze coated armor structure disclosed in the present invention is different from Example 1 in that it includes the following steps: S1: The aluminum bronze sample was polished using 80#, 500#, 800#, 1000#, 1500#, and 2000# sandpaper in a step-by-step manner until the surface roughness of the workpiece was ≤0.55µm, ultimately obtaining a smooth and flat surface. To remove debris and oil stains remaining from the surface polishing, the workpiece was placed in acetone solution and deionized water in turn, ultrasonically cleaned for 10 minutes, and then blown dry with compressed air. S2 uses pulsed laser deposition to form a ceramic anti-wear film on the workpiece surface. The Al2O3 ceramic target is placed on a rotating target holder, and the workpiece obtained in S1 is placed on a rotating sample stage. The pulsed laser deposition system is controlled to have a laser wavelength of 248 nm, a laser frequency of 20 Hz, a pulse duration of 22 ns, and an energy density of 2.5 J / cm 2 , oxygen pressure 12mTorr, pulse 50,000 times, forming a ceramic anti-wear film on the workpiece surface; S3 uses a femtosecond laser system to prepare a wear-resistant armor structure on the workpiece with a ceramic anti-wear film obtained in S2, and performs etching under the protection of an argon atmosphere, controlling the wavelength of the femtosecond laser to be 1030nm, the laser frequency to be 110kHz, the laser power to be 6W, the spot diameter to be 22µm, the microstructure etching spacing to be 22µm, and the etching speed to be 22mm / s, to obtain a wear-resistant armor structure; wherein, the femtosecond laser etches twice along a quadrilateral path, and can simultaneously obtain a wear-resistant spine armor structure and an internal hydrophobic microstructure, that is, the armor of the wear-resistant armor structure is a quadrilateral protruding spine structure and contains a hydrophobic microstructure inside, and the armor height is higher than the internal hydrophobic structure to achieve wear protection, and the armor thickness of the wear-resistant armor structure is 50µm, and the armor side length is 100µm; S4 places the workpiece obtained in S3 into a vacuum drying oven for heat treatment, controls the heating temperature of the heat treatment to 170°C and the heating time to 2.5 hours, realizes chemical modification of the aluminum bronze surface, reduces the surface free energy, and obtains wear-resistant super-hydrophobic aluminum bronze.

[0035] Comparative Example 1: A laser processing method for a wear-resistant super-hydrophobic aluminum bronze coated armor structure disclosed in the present invention. The difference from Example 2 is that S2 is not performed. The aluminum bronze obtained thereby only has a hydrophobic microstructure, without a wear-resistant armor structure and a ceramic anti-wear film. Figure 5This is a scanning electron microscope image.

[0036] Experimental Example 1: To explore which armor structure has a better wear-resistant effect on the super-hydrophobic surface, a linear wear test was conducted on the super-hydrophobic surface composed of the ceramic anti-wear film and the wear-resistant armor structure prepared above to test its wear resistance and compare the changes in wettability before and after wear. Figure 6 A schematic diagram of the prior wear experiment is shown, and the experimental process is as follows.

[0037] The super-hydrophobic surface of aluminum-bronze combined with a ceramic anti-wear film and a wear-resistant armor structure with a size of 1cm×1cm×1mm was placed facing 1000# sandpaper. A load of 4.90kPa was applied vertically to the aluminum-bronze, and it was pulled upward at a uniform speed in the horizontal direction. Each pulling of 0.5m was considered a wear cycle, and the change in surface contact angle was tested once. The wear resistance of the sample was characterized by the change in wettability.

[0038] The strong super-hydrophobic surface combining the ceramic anti-wear film and the wear-resistant armor structure prepared in Examples 2 to 6 was subjected to linear wear with Comparative Example 1, with a cycle of 0.5 m and a total wear of 2 m. The wear resistance of the samples was characterized by the change in wettability.

[0039] The experimental results show that after 2m of linear wear, the static contact angle of the microstructured surface without armor decreased from 159.5±1.4° to 113.0±0.9°, and the hydrophobicity decreased by about 29%. This is because it has neither the protection of the Al2O3 film nor the protection of the armor, the microstructure is extremely easy to wear, and the surface superhydrophobicity is easily lost; when the side length of the armor is 100µm, the surface static contact angle decreased from 162.5±0.9° to 134.2±1.1°, and the hydrophobicity decreased by about 17%; when the side length of the armor is 500µm, the surface static contact angle decreased from 159.1±0.9° to 141.4±2.4°, and the hydrophobicity decreased by about 11%; when the side length of the armor is 900µm, the surface static contact angle decreased from 161.4±1.2° to 139.2±0.6°, and the hydrophobicity decreased by about 13%. It can be clearly seen that the Al2O3 film and armor structure improve the wear resistance of the surface and keep the hydrophobicity of the aluminum bronze surface stable. When the side length of the armor is 500µm, the wear resistance is optimal.

[0040] The experimental results show that after 2m of linear wear, the static contact angle of the microstructured surface without armor decreased from 159.5±1.4° to 113.0±0.9°, and the hydrophobicity decreased by about 29%. This is because it has neither the protection of the Al2O3 film nor the protection of the armor, the microstructure is extremely easy to wear, and the surface superhydrophobicity is easy to lose; when the armor thickness is 50µm, the surface static contact angle decreased from 159.1±0.9° to 141.4±2.4°, and the hydrophobicity decreased by about 11%; when the armor thickness is 100µm, the surface static contact angle decreased from 142.6±5.5° to 133.7±2.2°, and the hydrophobicity decreased by about 6%; when the armor thickness is 150µm, the surface static contact angle decreased from 133.2±0.6° to 126.3±2.6°, and the hydrophobicity decreased by about 5%. Although the decrease in surface hydrophobicity is minimal when the armor is 100µm and 150µm thick, its surface is merely hydrophobic when it is not worn, not superhydrophobic, which would not meet the requirements for superhydrophobic surfaces in components such as ship valves. Overall, when the armor is 50µm thick, it meets the requirements for superhydrophobicity before wear and has good wear resistance.

[0041] In summary, the present invention has excellent wear resistance in preparing the super-hydrophobic surface of the coated armor structure, especially when the armor side length is 500µm and the armor thickness is 50µm, the aluminum bronze super-hydrophobic surface has the best wear resistance.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A laser processing method for a wear-resistant super-hydrophobic aluminum bronze coated armor structure, characterized by: The method includes the following steps: preparing an aluminum bronze workpiece, polishing and cleaning it first, then using pulsed laser deposition to form a ceramic anti-wear film on the surface of the workpiece, and then using a femtosecond laser to etch the ceramic anti-wear film to form a wear-resistant armor structure. Then, through heat treatment, chemical modification of the wear-resistant armor structure is completed, and chemical modification of the micro-nano surface structure is completed to obtain wear-resistant super-hydrophobic aluminum bronze.

2. The laser processing method of a wear-resistant super-hydrophobic aluminum bronze coated armor structure according to claim 1, characterized in that: During the polishing process, the surface of the aluminum bronze workpiece is polished step by step using sandpaper with specifications of 80#, 500#, 800#, 1000#, 1500#, and 2000# in sequence until the surface roughness of the workpiece is ≤0.55µm.

3. The laser processing method of a wear-resistant super-hydrophobic aluminum bronze coated armor structure according to claim 1, characterized in that: During the cleaning process, the workpiece is sequentially placed in an acetone solution and deionized water, ultrasonically cleaned for 8 to 12 minutes, and then dried using compressed air.

4. The laser processing method of a wear-resistant super-hydrophobic aluminum bronze coated armor structure according to claim 1, characterized in that: During the pulsed laser deposition process, the ceramic anti-wear film is composed of Al2O3 ceramics.

5. The laser processing method of a wear-resistant super-hydrophobic aluminum bronze coated armor structure according to claim 4, characterized in that: During the pulse laser deposition process, the laser wavelength of the pulse laser deposition system is controlled to be 248 nm, the laser frequency is 10-20 Hz, the pulse duration is 18-22 ns, and the energy density is 1.5-2.5 J / cm 2 , oxygen pressure 8~12mTorr, pulse 50000 times.

6. The laser processing method of a wear-resistant super-hydrophobic aluminum bronze coated armor structure according to claim 1, characterized in that: During the etching process, the armor of the wear-resistant armor structure is a quadrilateral protruding spine structure and contains a hydrophobic microstructure inside.

7. The laser processing method of a wear-resistant super-hydrophobic aluminum bronze coated armor structure according to claim 6, characterized in that: During the etching process, the armor thickness of the wear-resistant armor structure is 50-150 μm, and the armor side length is 100-900 μm.

8. The laser processing method of a wear-resistant super-hydrophobic aluminum bronze coated armor structure according to claim 6, characterized in that: During the etching process, the femtosecond laser wavelength is controlled to be 1030 nm, the laser frequency is 90-110 kHz, the laser power is 4-6 W, the spot diameter is 18-22 μm, the microstructure etching spacing is 18-22 μm, and the etching speed is 18-22 mm / s.

9. The laser processing method of a wear-resistant super-hydrophobic aluminum bronze coated armor structure according to claim 6, characterized in that: During the etching process, the etching is performed under the protection of an argon atmosphere.

10. The laser processing method for a wear-resistant super-hydrophobic aluminum bronze coated armor structure according to claim 1, characterized in that: During the heat treatment process, the heating temperature of the heat treatment is controlled to be 150-170° C., and the heating time is controlled to be 1.5-2.5 hours.

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