Question

Where is intergranular corrosion most likely to occur on an aircraft

Answer 1

Intergranular corrosion is most likely to occur on an aircraft at the grain boundaries of the metal alloys used in its construction.

Step-by-step explanation:

Intergranular corrosion is most likely to occur on an aircraft at the grain boundaries of the metal alloys used in its construction.

When different metal ions are present in the grain boundaries, they can create an electrochemical potential difference, resulting in corrosion.

This can be accelerated by exposure to factors such as moisture, temperature, and chemicals.

For example, in the case of aluminum alloys, intergranular corrosion can occur at the grain boundaries due to the presence of alloying elements like copper or zinc.

Corrosion may also be more likely to occur in areas where protective coatings have been damaged, such as around rivet holes or scratches in the paint.