3. Corrosion within Aircraft

Question 1

What are some types of corrosion present in an aircraft?

Answer 1

• Pit corrosion.
• Crevice corrosion.
• Stress corrosion.

Question 2

How can we prevent corrosion within an aircraft?

Answer 2

• Thorough rinsing and cleaning of aircraft to remove salt and other corrosive agents.
• Re-painting and sanding chipped or delaminating paint.
• The use of protectants and lubricants to seal the material against moisture.
• Covering aircraft during extreme weather conditions.

Question 3

Why does corrosion occur?

Answer 3

• Corrosion occurs when.a metal reacts (oxidises) with another substance such as oxygen, hydrogen, an electrical current or even bacteria.

Question 4

Why does pit/crevice corrosion occur?

Answer 4

• Crevice corrosion occurs when water is trapped between two surfaces or crevices. Corrosion occurs due to the lack of oxygen between the surfaces/crevice.
• Pit corrosion forms through a concentration or cell corrosion.