Question

Which type of oxide film is more protective against corrosion and why ?

Answer 1

Answer:

zinc oxide and aluminium oxide layers are most protective against corrosion because they are amphoteric oxides i.e. they do not react with acids as well as bases.

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Answer 2

Which type of oxide film is more protective against corrosion and why?

• The Non-permeable stable oxide film is the most defensive oxide film.

• This oxide film is amazingly follower and non-permeable (defensive). Because of the shortfall of pores or breaks in the oxide film, it structures obstruction for additional activity, and in this manner, the pace of consumption of metal reductions quickly.
• Zinc oxide and aluminum oxide layers are generally defensive against consumption since they are amphoteric oxides for example they don't respond with acids just as bases.