Painting of the Iron surface is a type of corrosion prevention method.
The Iron materials can be prevented from corrosion by painting of the surface and that is an example of barrier protection.
Painting of the Iron surface
Iron rusting is a redox reaction. As iron is released to the environment, it has a terrible reaction with water and air, resulting in rust. As a result, iron articles are painted to prevent it from reacting with water and air. This is the only way to avoid iron from rusting.