Galvanization is a process by which zinc, a non-corrosive metal, is coated on the corrosive metals. Because zinc is more reactive than other metals, the zinc galvanized layer corrodes first, protecting the steel or iron substratum. Hot-dip galvanizing is a process of galvanization. When subjected to the atmosphere, zinc reacts with air to create zinc oxide. This further reacts with carbon dioxide to make zinc carbonate, a fairly strong product that prevents more rust by protecting the steel or metal from the elements.
Galvanization Method – The Introduction