The purpose of this article is to present the basic principle and the most common forms of corrosion. Some general methods of control, prevention, and mitigation for each type of corrosion will be discussed but will not be covered in-depth.
Basic corrosion principle:
When a metal is exposed to certain environment and conditions, such as water (including moisture), chemicals (acid, caustic, salts), corrosive gases (O2, CO2) and/or high temperature, the metal will corrode. For a corrosion to take place, there must be both an anodic and a cathodic reaction. Read more about the principles of corrosion.