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Why do aluminum sheets not corrode easily?

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The aluminum plate is not easily corroded because the aluminum reacts with air and undergoes an oxidation reaction, forming a fine and tight oxide film on the surface of the aluminum. This oxide film can insulate aluminum from other substances to react. This thin layer of Tight oxide is very resistant to further corrosion, especially the pitting and flaking corrosion you might be thinking of.Because of the existence of this layer of oxide film, aluminum plate has a strong anti-pollution ability, there is a strong corrosion resistance, is not prone to wear and so on, this aluminum plate also has a longer life.
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