Corrosion Flashcards
1
Q
What is Corrosion?
A
Corrosion is the tendency of a metal to revert to its more stable, natural state. Occurring when a metal reacts to air to form metal oxides or when it reacts with acids and alkalise to form metal salts.
2
Q
What is oxidisation?
A
It is the direct combination of a bare metal with the oxygen in the atmosphere.
3
Q
What 8 principle types of corrosion are there?
A
- Surface/Uniform Corrosion
- Fretting Corrosion
- Pitting Corrosion
- Intergranular Corrosion
- Exfoliation Corrosion
- Dissimilar metals Corrosion
- Stress Cracking
- Crevice Corrosion
4
Q
Which environments promote corrosion?
A
- Industrial Atmospheres
- Marine Atmospheres
- Tropical Climates
- Desert Areas
- Cold Climates
5
Q
What corrosion preventing coatings are there?
A
- Permanent coatings
- Supplementary Protectives
- Temporary Protectives
6
Q
What mechanical corrosion removal methods are there?
A
- Wire Brush
- Rotary Wire Brush
- Waterproof Abrasive paper
- Flap Wheels
- Nylon Flap Wheels
