A kind of preparation method of aluminum alloy surface film
A technology of aluminum alloy surface and aluminum alloy, which is applied in the direction of metal material coating process, liquid chemical plating, coating, etc., can solve the problems of poor corrosion resistance, achieve improved corrosion resistance, high reactivity, and good stability Effect
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[0039]Take a piece of aluminum alloy with a specification of 100mm×50mm×50mm, and polish it with 600-2000 mesh water-grinding sandpaper until the surface is smooth, and then weigh 10-15 parts of the polished aluminum alloy in parts by weight. , 40-50 parts of acetone, 40-50 parts of sodium hydroxide solution with a mass concentration of 1%, 40-50 parts of nitric acid with a mass concentration of 30%, put the polished aluminum alloy in acetone for 3-5 minutes, and then use Wash with absolute ethanol for 3 to 5 times and deionized water for 3 to 5 times to obtain the cleaned aluminum alloy, place the cleaned aluminum alloy in sodium hydroxide solution, and heat it in a water bath to 50 to 60°C for etching treatment for 3 ~5min, get the etched aluminum alloy, soak the etched aluminum alloy in nitric acid at room temperature for 1~2min for light treatment, get the light treated aluminum alloy, first use anhydrous ethanol to ultrasonicate the light treated aluminum alloy Wash for 3...
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