Identify two methods used to protect ferrous metals against corrosion. - Leaving Cert Engineering - Question d - 2013

Spray painting: This method involves applying a coating of paint through a spray mechanism. The paint acts as a barrier, preventing moisture and oxygen from reaching the metal surface, which helps to reduce the likelihood of corrosion.

Dip coating: In this process, the ferrous metal is submerged in a liquid coating material. Upon removal, a layer of the coating material adheres to the metal surface, providing a protective barrier against environmental factors that can cause corrosion.