Surface nanocrystallization process of aluminum-magnesium alloy
An aluminum-magnesium alloy, nanotechnology, applied in metal material coating process, liquid chemical plating, coating, etc., can solve the problem that the surface oxide film is easily corroded by strong acid and strong alkali, restricting the application of aluminum-magnesium alloy, aluminum Solve problems such as low alloy surface hardness, achieve good salt spray corrosion resistance, light weight, and good corrosion resistance
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Embodiment 1
[0055] The surface nanotechnology of aluminum-magnesium alloy comprises the following steps:
[0056] (1) Use a tungsten alloy tool with a power of 480W to impact the surface of an aluminum-magnesium alloy with a size of 40mm×20mm×3mm at a frequency of 15KHz, and the impact energy will generate a compressive stress of 600MPa; the impacted part can be strengthened to achieve nanometerization. The surface forms a nano-micro gradient structure;
[0057] (2) Soak the aluminum-magnesium alloy treated in step (1) in mechanical oil whose mass is 10 times the mass of the aluminum-magnesium alloy treated in step (1) for 2 minutes, and then drip the oil to dry.
Embodiment 2
[0059] The surface nanotechnology of aluminum-magnesium alloy comprises the following steps:
[0060] (1) Use a tungsten alloy tool with a power of 480W to impact the surface of an aluminum-magnesium alloy with a size of 40mm×20mm×3mm at a frequency of 15KHz, and the impact energy will generate a compressive stress of 600MPa; the impacted part can be strengthened to achieve nanometerization. The surface forms a nano-micro gradient structure;
[0061] (2) Completely immerse the aluminum-magnesium alloy treated in step (1) in a metal hybrid silica sol whose mass is 8 times the mass of the aluminum-magnesium alloy treated in step (1), take it out for 15 seconds, and dry it at 180° C. for 40 minutes; The metal hybrid silica sol is chromium hybrid silica sol, and the preparation method of the chromium hybrid silica sol is as follows: 50 parts of methyl orthosilicate, 70 parts of (3-aminopropyl) trimethoxysilane, 5 parts Add isopropanol to 130 parts of ethanol, stir at a speed of 3...
Embodiment 3
[0064] It is basically the same as in Example 2, except that the metal hybrid silica sol described in Example 3 is a titanium hybrid silica sol. The preparation method of the titanium hybrid silica sol is as follows: 50 parts of methyl orthosilicate, 70 parts of (3-aminopropyl) trimethoxysilane, 5 parts of isopropanol are added to 130 parts of ethanol, at a temperature of 35 Under the condition of ℃, stir at a speed of 300 rpm for 1 h, add 2 parts of acetic acid and 30 parts of water, at a temperature of 50 °C, stir at a speed of 300 rpm for 4 h, add 15 parts Parts of isopropanol, and continued stirring at a temperature of 50° C. at a speed of 300 rpm for 6 hours to obtain a titanium hybrid silica sol.
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