Microbial corrosion is a type of corrosion caused by living organisms such as bacteria, algae, or fungi. This type of corrosion is often associated with tubercles or slimy organic materials.

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.

Any system where temperature and water are the main elements for its operation inevitably requires the invention of Abrizan Company, called Industrial Mitreh, because wherever there is temperature and water, the formation of sediment is inevitable, unless a substance is used that suspends these sediments. This is the main function of an excellent anti-sediment solution.

The set of factors affecting metal corrosion can be divided into two main categories: environmental factors and intrinsic factors of the metal.

The incidence of each type of metal corrosion varies, and the importance of each type will vary across systems and environments. On the other hand, there are striking similarities in the distribution of corrosion damage across similar industries, and by comparing them, it can be seen that corrosion problems in similar industries are very similar.

In general, it can be said that the corrosion process will never stop, but it can be controlled to a large extent by implementing a corrosion management program. In fact, by implementing corrosion management, organizations can proactively plan to improve the way they design, operate, and maintain their critical assets, thereby reducing the cost of controlling damage and unexpected failures caused by corrosion.

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.

The destructive phenomenon of corrosion has a very long history, and mankind has always dealt with the problems caused by it, but scientific approach and study in this field do not have much history. In the middle of the 18th century, the phenomenon of corrosion was noticed, but no solution was presented to solve the problems caused by it.

In general, to facilitate the study of corrosion problems and to compare different metals with each other, the best method is to express the speed or rate of the corrosion reaction. Corrosion measurement units are used to express corrosion rates.

Cold Mitreh, a water-soluble solution with a high dissolution rate, is introduced as a powerful scale remover and an innovative product of Abrizan Company. Cold Mitreh was developed in response to the industry's need for an alternative solution to descalers. Descalers are scale removers based on hydrochloric acid and are highly dangerous, toxic, and corrosive.

Steam boilers are mainly made of carbon steels, and the internal surface of these metals that are in contact with water must be free of deposits. Deposits have a lower thermal conductivity than metals, which causes the temperature of the metal to rise on the combustion wall side. Therefore, more fuel is needed to produce steam. Therefore, there is a need to control and wash these deposits inside the steam boiler.

Despite the widespread industrial use of hydrazine, few documented studies have been conducted on its harmful effects in humans. Humans may be exposed to hydrazine in a variety of ways, including occupational exposure, ingestion of hydrazine-containing medications, cigarette smoking, or accidental exposure. Hydrazine is absorbed through the skin, lungs, and gastrointestinal tract and is rapidly distributed throughout the body. Acute human poisoning has been reported to include vomiting, multiple respiratory tract lesions, central nervous system, liver, and kidney damage.

Metals are subject to corrosion in most chemical environments, for example, metals corrode in contact with water, moisture, acids, bases, salts, oils, gaseous substances and other chemicals. In general, minerals are more corrosive than organic substances. For example, corrosion in the oil, gas and petrochemical industries is often caused by the effects of minerals such as chlorine, sulfur, etc., rather than by organic substances such as oil, petroleum and diesel.

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.

Corrosion is often not uniform along the length of a member and is usually confined to the middle or ends of the member. In the case of piles, corrosion may be severe above the waterline and mild or absent below. This area of ​​maximum corrosion is often further away from the sections of maximum anchorage and shear forces, but rebar may be uniform throughout the member.