UNIT4-Rusting And Corrosion Flashcards
1
Q
What is corrosion?
A
Corrosion is brought by wet weather whereas oxidation is the reaction with oxygen. Corroded metals became weaker over time.
2
Q
What is rusting?
A
When iron or steel reacts with oxygen and water to produce a soft brown flaky substance.
3
Q
What are conditions for rusting?
A
There has to be air and water. Oil prevents rusting as it stops the air and water making contact. Hense things like bike chains being oiled.
4
Q
What speeds up rusting?
A
Salts and acids speed up rusting as they speed up oxidation.
5
Q
How to prevent rusting?
A
A plastic coating paint coating or oiling and greasing. A physical barrier.
