Why is galvanised article protected against rusting even when the zinc coating is broken


Asked by muskangautam062 | 4th Jun, 2019, 02:33: PM

Expert Answer:

Because Zinc is more reactive than iron and loses electrons more easily. The outer layer of Zinc will form Zinc oxide. Which is stronger than Zinc. So even whren the zinc coating is broken it still have another strong substance ZnO which is stronger then Zinc and galvanised particles are protected from rusting.

Answered by Ravi | 4th Jun, 2019, 03:24: PM