The effects of rusting can be prevented by:
- Sacrificial protection
These measures prevent rusting because it stops air/water from coming into contact with iron
Galvanising – The act of placing a more reactive metal (eg. zinc or magnesium) infront of the iron – for example
- Zinc – is more reactive than iron
- The zinc wil react first, effectively protecting the iron from reacting with thte air or moisture
- However, once the zinc has fully reacted, it will need to be replaced because the metal is once more, exposed.