Corrosion occurs from when materials (frequently metals) chemically react with their environment. It is a natural process that converts refined metals to their more stable oxide.
However, there are protection methods that can be put in place to protect your metals from corroding. The following are the classification of corrosion protection methods.
Active corrosion protection
The goal of active corrosion protection is to influence the reactions that happen when a metal corrodes. It is able to control the package contents and the corrosive agent as well as the initial reaction itself which may be able to avoid any corrosion.
Passive corrosion protection
During this method of corrosion protection, the damage is prevented through mechanical isolation of the package contents from any aggressive corrosive agents which can be done through protective layers, films or any other coatings. Sometimes, passive corrosion protection will change neither the general ability of the package contents to corrode, nor how aggressive the corrosion agent is.
Permanent corrosion protection
The main purpose of permanent corrosion protection methods is to provide protection where it is being used. The stresses presented by climatic, biotic and chemical factors will be slim in this situation. Machines will often be found in factory sheds, which are protected from extreme variations in temperature – this is often the cause of condensation.