Why does aluminium corrode faster in water?

Answer 1

Aluminium does corrode, but after this does not corrode at all because aluminum is a reactive metal. Normally, aluminum is protected by a thin layer of oxide making it inert (unreactive).

However, you can remove the layer of aluminum oxide by submerging the aluminum metal in Mercury(II) chloride. Upon treatment, aluminum is stripped of its oxide quickly and becomes covered by a thin layer of an amalgam (a substance formed by the reaction of mercury with another metal). Once amalgamated, aluminum can undergo a variety of reactions. (eg: it will dissolve in water, which can be dangerous, as hydrogen gas and heat are generated).

Answer 2

The water dissolves the oxide coating that normally forms and protects the metal from further damage. This exposes more of it to be corroded which in turn is dissolved. The cycle repeats and so it corrodes faster.

Answer 3

Aluminum corrodes faster in water because water contains oxygen and can act as an electrolyte, allowing for the formation of an electrochemical cell that accelerates the corrosion process. This process is known as galvanic corrosion, where the aluminum acts as the anode and rapidly corrodes in the presence of water and oxygen.

Answer 4

Because of it's element