Answer:
Galvanization:
Galvanization is a process of coating iron or steel with a protective layer of zinc to prevent corrosion. This is done by immersing the metal in a bath of molten zinc or by electroplating the metal with zinc.
Coating:
The coating in galvanization is a layer of another metal that is applied to the surface of the iron or steel. In this case, the coating material is zinc.
Benefits of Zinc Coating:
The application of a zinc coating offers several advantages, including:
1. Corrosion Resistance: Zinc acts as a sacrificial anode, meaning it corrodes before the iron or steel beneath it. This protects the underlying metal from rust and corrosion.
2. Durable Protection: The zinc coating provides long-lasting protection against the elements, making it suitable for outdoor applications.
3. Self-Healing: Even if the zinc coating is scratched or damaged, it can still provide protection. The exposed zinc reacts with oxygen and moisture in the air to form a protective layer called zinc oxide.
4. Aesthetic Appeal: Zinc coatings can be left as a shiny, silver-colored finish or can be further treated to achieve a desired appearance.
Conclusion:
In galvanization, iron or steel is coated with a layer of zinc. This zinc coating provides corrosion resistance, durability, and aesthetic appeal to the metal.