Question

how is aluminium prevented from further oxidation​

Answer 1

If possible, store your aluminum product or products in a climate-controlled environment where it's not exposed to rain, humidity or other natural elements. You can also have aluminum clear coated to protect it from corrosion. Clear coating involves the application of a protective layer over the surface of aluminum.

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Answer 2

Explanation:

Untreated aluminium has very good corrosion resistance in most environments. This is primarily because aluminium spontaneously forms a thin but effective oxide layer that prevents further oxidation. It forms a layer of oxide which blankets the remaining aluminium, preventing further corrosion