The affinity of some metals in a corrosive environment initially increases normally with increasing concentration of corrosive agents (oxidizing power of the solution), and metal corrosion is intensified, but at a certain concentration of corrosive agents, the corrosion rate suddenly decreases significantly and the metal loses its affinity and becomes inactive. The reason for the reduction in corrosion at a certain concentration of oxidizing components is the formation of a protective or inactive layer on the metal surface. The protective layer can be oxide, hydroxide or other compounds. This phenomenon is called rusting.

Downhole corrosion is one of the most important problems facing the oil and gas industry. By using various methods such as selecting appropriate materials, surface coating, use of corrosion inhibitors and cathodic protection, the corrosion rate can be significantly reduced. A better understanding of corrosion mechanisms and the development of new technologies can help improve efficiency and reduce costs in this industry.

Corrosion is a phenomenon that occurs in most environments, so no industry can be safe from the costs of corrosion. For example, the oil, gas and petrochemical industries, factories and heavy manufacturing industries (iron smelting, steelmaking, etc.), transportation, water and wastewater, are among the industries that are severely affected by this phenomenon. This section attempts to briefly examine corrosion in several important industries.

Failure to pay attention to corrosion problems in any industrial and manufacturing unit results in hidden costs that are impossible to avoid. Economic considerations are essential in each of the corrosion control methods. Of course, there is no need to choose the most expensive corrosion control methods, because the costs incurred may not be economically justified and waste capital.

In order to compare DM and mitreh solution, it should be kept in mind that three different substances should be used for sediment removal, sediment prevention, and corrosion prevention, and in this regard, usually materials such as acids for sediment removal, DM for sediment removal, and in some cases Materials are also used to remove oxygen from water.

Corrosion in steam boilers is caused by chemical and electrochemical reactions of metal with its surrounding environment. The most important corrosion factors in steam boilers are oxygen corrosion, carbon dioxide corrosion, corrosion due to pH drop, alkalinity corrosion, corrosion of hydrolyzable salts and corrosion of organic materials.

Any process that delays corrosion is called corrosion inhibition (prevention of corrosion). In general, corrosion inhibition means reducing the rate of oxidation of a metal or adding a chemical compound that will be in contact with the solution in the system. The corrosion inhibitor may be added in liquid, vapor, or both. Specifically, a corrosion inhibitor is a chemical compound that is added to the liquid phase in such a way that it affects the metal surface.

Corrosion management is an action to organize corrosion activities and its control methods that has gained a special place in various industries in recent years. With the increasing development of corrosion prevention technologies, the selection of appropriate methods for corrosion control in a specific unit, the need to implement a comprehensive and well-written program called corrosion management, seems essential. Corrosion management is a set of methods and solutions that are applied in a system to prevent corrosion in order to optimize corrosion control methods economically.

Investing in corrosion control is a form of profitability. Ignoring corrosion problems in any industrial and manufacturing unit leads to hidden costs that are impossible to avoid. The first step in corrosion economics is to choose an appropriate method to minimize corrosion costs. These costs can include: production and equipment costs, loss of valuable products, undesirable product appearance, environmental costs, and so on.