RUSTING Flashcards
1
Q
What two things must be present for rusting
A
water, oxygen
2
Q
What are the +ves and -ves of oiling?
A
wears quickly but works well on mobile oxygen
3
Q
What are the +ves and -ves of painting?
A
Chips easily, cheap, aesthetically pleasing
4
Q
What are the +ves and -ves of plastic?
A
very efficient at creating a barrier, may rip, bulky
5
Q
How does galvanising work?
A
Coating in zinc which is more reactive means that the water and oxygen will react with the zinc instead.
