Examples of passivation in the following topics:
-
- Passivation is a process through which a thin film of corrosion products builds on a metal surface to serve as a barrier against oxidation.
- The formation of a passivation layer is affected by environmental pH, temperature, and chemical conditions.
- These pores allow an oxide film, thicker than a passivation layer, to build up.
-
- For example, aluminum foil develops a thin skin of Al2O3 (called a passivation layer) that protects the foil from further corrosion.
- As mentioned above, a well-known example is aluminum foil, which is coated with a thin film of aluminium oxide that passivates the metal, slowing further corrosion.
-
- Aluminum is resistant to corrosion due to the phenomenon of passivation.
-
- The transition metals (such as iron, copper, zinc, and nickel) are slower to oxidize because they form a passivating layer of oxide that protects the interior.
-
- Unlike many other metals which form passivating oxide layers, iron oxides occupy more volume than iron metal.