Question

What is the difference betweeen galvanisation and sacrifiial protection ?

Answer 1

@chmvijay

Answer 2

Galvanizing iron means coating it with zinc. Zinc is much more corrosion-resistant than iron (despite being a more active metal) because its oxide, ZnO, adheres to the surface of the metal rather than spalling off to expose more zinc to the atmosphere. In other words, the iron is covered by a metal which does not corrode.
Sacrificial protection, on the other hand, entails protecting the iron with a sacrificial anode made of a more active metal such as magnesium, which will oxidize preferentially to the iron. The iron cannot be oxidized because the iron cations will be reduced by the more active metal anode. When the sacrificial anode is depleted, the iron will begin to corrode

source : http://answers.yahoo.com/question/index?qid=20080819072229AA7epEz

Answer 3

I read that but that dosen't give the information and it is incorrect

Answer 4

what information u need ?

Answer 5

Only the difference between them

Answer 6

then u should go in depth on their process

Answer 7

I go to wikipaedia?

Answer 8

fine, But that's overload of information ok thnaks i would. ohk

Answer 9

r u from India by the way?

Answer 10

yup :)

Answer 11

south india i guesss