Aluminum Alloy Corrosion

Last updated: August 22, 2019

What Does Aluminum Alloy Corrosion Mean?

Aluminum is the dominant metal used in engineering where corrosion resistance is needed, but it is possible for aluminum and its alloys to undergo corrosion. However, when aluminum alloys are damaged, they can form a barrier called an oxide film that, when exposed to air, serves as a protective barrier against corrosion.


Corrosionpedia Explains Aluminum Alloy Corrosion

Aluminum is widely used due to its high resistance to corrosion. It is best known for its oxide film barrier that bonds strongly to its surface. Therefore, when a structure made of aluminum is damaged by corrosion, it quickly forms a corrosion-resistant film in almost all settings. The film is only about 1nm in thickness, but can be very effective in protecting aluminum as well as its alloys from the damaging effects of corrosion.

Aluminum alloys are highly reliable against weathering or atmospheric corrosion. This is why this material is mostly found in outdoor applications, and usually does not require protective coating, shelter or any type of maintenance.

Due to this, aluminum and its alloys are widely used not only in automobile and aircraft engineering, but other types of industries due to its excellent properties and resistance to corrosion.

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