Barrier Protection

What is Barrier Protection?

A method of preventing rust by covering iron or steel with a layer that keeps oxygen and water away from the metal surface. Painting, greasing and coating with plastic all work this way, and all of them stop working at any point where the layer is broken.

This definition is part of the Metals chapter in Cambridge O Level Chemistry.

Concepts related to Barrier Protection

• painting
• greasing
• plastic coating