Corrosion prevention methods:
– cathodic protection
– Anand Protection
– Choosing suitable materials (metallurgy)
– Environmental changes and corrosion inhibitors or (inhibitors)
Each process of delay in corrosion is a deterrent of corrosion. In general, corrosion inhibition means reducing the metal oxidation rate or adding a chemical compound that is in contact with the solution in the system. Corrosion inhibitor may be added as liquid, steam or both. Specifically, the corrosion inhibitor is a chemical compound that is added to the liquid phase – which affects the surface of the metal.
There are two processes in the reciprocating reaction on the metal surface. The first stage is the inhibitory transfer to the metal surface, and the second stage, interacts with the inhibitor and the metal surface.
The inhibitory transfer to the surface of the metal and the components that react to inhibition and the chemistry of the system, which are affected by the active inhibitor components, will be the underlying factors governing the inhibitory process. Temperature, solubility, inhibitory stability, properties of connected components and changes in corrosive conditions determine the amount of inhibitory effect. It is also important to recall that factors such as the cavity, temperature and fluidity of the fluid and the level of metal are of great importance.
Effective factors in deterrence
– The nature of the metal surface
– Chemical composition of the environment
– Concentration inhibitor
– pH of the environment
– Effects of microorganisms
– Sediment formation
– Liquid and aeration speed
– Neutralizers (neutralizing amines)
– Ammonia as inhibitor of boilers, water cooler, fresh water, steam phase
According to the mentioned articles and the amount of damage caused by corrosion to industries in the world as well as in Iran, the industrial research company Abreezan, in the direction of its research into the study of a solution to reduce the corrosion losses in industries, and with the invention of solutions that, in addition to the deposition of anti- Corrosion; It could have taken a major step towards reducing the cost of corrosion in large industries.