Cambridge IGCSE Chemistry · Syllabus 0620 · Metals
Galvanising
What is Galvanising?
Coating iron or steel with a layer of zinc. The zinc acts as a barrier that keeps oxygen and water away from the iron, and because zinc is more reactive than iron it also acts sacrificially, so the iron is still protected at any point where the coating is scratched.
This definition is part of the Metals chapter in Cambridge IGCSE Chemistry.