The initial result of an experimental study of the anti-corrosion effect of structural steel AH-36 is shown under cathodic polarization in tropical seawater in Vietnam. In the study, various environmental sensors are used to collect data about the environment, in which the calcareous layer is formed with rapid polarization. The completion of layer formation is proved by the stabilization of the output voltage while fixing the output current of the power supply. Under the experimental condition, after the first 100…120 hours, the surface of AH-36 structural steel is completely covered with calcareous layer in the tropical marine environment. An analysis of the properties of the calcareous layer in laboratory conditions using electrochemical methods shows that the effectiveness of protection of AH-36 steel from corrosion after cathodic polarization is achieved in the first week. Maintaining a constant current density further away at a given polarization potential leads to a decrease in the effectiveness of electrochemical protection. We offer directions for studying the calcareous layer for increasing the protective efficiency and their resistance in seawater

The issue of using composites based on bis-phenolic and epoxy vinyl ester resins in the practice of anti-corrosion protection of technological equipment, in particular, chemical production equipment, is considered. Composites can be used both as coatings and as structural materials in the manufacture of individual parts of equipment, containers, etc. Composites based on these resins can increase the service life of equipment several times. These materials have a wide temperature range of application; can be operated in aggressive environments (acids, alkalis, oxidizing environments); have high adhesion to metal and concrete; strength comparable to the strength of metals; resistance to shock and dynamic loads and the impact of a liquid stream containing a solid phase

The modern trends of development in the field of materials for anticorrosive protection are considered. It is shown that one of the promising directions is the development of technology for obtaining gumming coatings from solutions of styrene block copolymers by methods of paint and varnish technology. New materials are described, their main advantages, areas and application experience are considered. The high efficiency of the developed and implemented compositions in the field of anticorr osive protection was noted

This article presents the results of research in the field of synthesis of organic complexes based on propyl, butyl, pentyl and hexylamine and maleic acid in a molar ratio of 1:1. The structure and structure of the obtained substances were confirmed by IR and 1H NMR spectroscopy. Some physicochemical properties of the synthesized complex have been determined. In order to study the antimicrobial activity of the complexes obtained, their solutions were prepared in various media (water, isopropyl alcohol and ethyl alcohol) at three different concentrations (2,5; 5; 25 mg/l) and their effect on the vital activity of sulfate-reducing bacteria was studied at a temperature of 30... 32 °C for 15 days. It has been established that at a concentration of 2,5 mg/l, the synthesized complex salts exhibit a 96…98% bactericidal effect, and at a concentration of 5…25 mg/l, they exhibit a 100% bactericidal effect, completely suppressing the vital activity of bacteria. The synthesized complexes exhibit a higher bactericidal effect even at low conc entrations.
Thus, the preparation of organic complexes based on amines and maleic acid, as well as special-purpose inhibitors, components and composite materials based on them, is a very urgent problem. A number of studies have been carried out in this direction