General Knowledge - Basic General Knowledge - Discussion

How reactivity on metals help in electroplating and galvanising process?

Zinc is more reactive to oxygen in environment. So that galvanizing process is used to protect the material from corrosion.

There are two process by which the galvanizing process can be done, first type is to pass the iron metal from the molten zinc and the other process is via electroplating. Generally we follow the molten metal zinc process for the galvanizing.

But why only the galvanisation is carried out only via zinc coating not by any other metal. We cannot preserve food in a zinc coated pots because zinc can react with the food material which cause harmful to the human health.

It's a Processing to get Zinc-alloy.

Zinc prevent the corrosion

Corrosion is a destruction of metals or alloys from the surrounding environment through chemical or electrochemical changes.

When iron material is placed in a environment that contain moisture then upper layer iron react with moisture and utensil got corrosion.

What is corrosion?

Zinc is more reactive and produces Zn+2 ions readily. It is placed higher in reactivity series therefore cannot be displaced by iron.

What is preventing zinc?