The article presents an analysis of the application of the ellipsometric method for studying the adsorption of organic compounds on metal surfaces in aqueous neutral solutions. The interaction of both individual compounds and their substituted compounds on the surface of copper, zinc and iron from a neutral borate buffer pH 7.4 is considered. The dependence of the free energy of adsorption on the physicochemical characteristics of a number of compounds is revealed.

The effect of rhodanine on hydrogen embrittlement during the electrodeposition of copper from an ethylenediamine electrolyte and the corrosion destruction of the resulting copper coatings under the action of Aspergillus niger and Penicillium chrysogenum has been studied. The introduction of rhodanine into the electrolyte makes it possible to increase the current efficiency of copper, improve the protective qualities of the coating and reduce hydrogenation of electrical components, which will increase their reliability and durability. The effectiveness of the introduction of rhodanine into an ethylenediamine copper electrolyte at a concentration of 5 mmol/L as an inhibitor and hydrogenation during electrodeposition of steel and micromycete corrosion under the action of Aspergillus niger and Penicillium chrysogenum has been established.

The results of four-year tests of typical metals (K^exp) with specimens exposed top side up in two directions at three corrosion stations (CS) in Vietnam were used. Using the doseresponse functions FDOS and FDON for CS, the first-year corrosion losses of metals (K^pr) were determined. The obtained K^pr values were used to estimate the corrosivity of CS atmospheres with respect to typical metals. Comparisons of the estimated corrosivity categories with experimental K^exp values demonstrated fairly good comparability for steel and zinc using FDOS and FDON. For copper there is no comparability between the categories using both models, and for aluminum, category comparability was obtained only using FDON. In steel, zinc, and copper FDON adjustments were made to the temperature coefficients to achieve the absolute comparability between the estimated atmospheric corrosivity categories based on K^pr with categories determined using K^exp. It is shown that the adjustments of temperature coefficients is of a private nature only for the Vietnam CS and requires verification for application in other places.

The review continues a series of publications dedicated to the development of corrosion studies at the Frumkin Institute of Physical Chemistry and Electrochemistry. It focuses on vapor-phase protection of metals against atmospheric corrosion by organic inhibitors. The works of researchers from the Laboratory of Corrosion Inhibitors, the Laboratory of Physicochemical Fundamentals of Corrosion Inhibition, and the Laboratory of Oxidation and Passivation of Metals and Alloys are analyzed.

The electrochemical (EC) properties of multilayer adaptive coatings (AC) modified with carbon nanotubes (CNT) have been studied. Within the framework of the theory of “reduced” geometric states, a methodological approach is formulated to compare the characteristics of the echoes of multilayer coatings of different thicknesses. The influence of AC modification by CNT has been studied. It is shown that CNTs have a significant effect on the EC characteristics. For the coatings under consideration, a positive value of the potential of the substrate under the coating with CNT is found. Moreover, with increasing exposure time, further refinement of both Pt and St3 protected substrates is observed. It is shown that the impedance kinetics of multilayer AC on different substrates can be described within the framework of a combination of known equivalent schemes (ES) (Voit, Mansfeld, Mansfeld−Voit), corresponding to models of defectfree coating, coatings with through pores and coatings with internal defects. It is shown that during exposure in an aggressive environment, the evolution of the coating/substrate ES system is observed. The nature of the evolution of the ES of the same coating is different on different metal substrates. It has been established that there is no obvious correlation of the potential of substrates (corroding St3 and inert Pt) with the corrosion potentials of the corresponding metals and with their corrosion resistance at an exposure of 3% NaCl. It is suggested that in the case of AC, the potential of the substrate is formed not only by the anodic process on the substrate, but also by EC processes of oxidation and structuring in the polymer base of the AC under the influence of the medium.

The adsorption and passivation effects of substituted 3-amino-1,2,4-triazoles (3-R-3-AT) containing electron-donating or electron-withdrawing substituents on copper were studied in neutral solutions. Compounds with electron-withdrawing substituents R=C₆H₅- and C₃H₇SO₂- exhibit higher adsorption capacity than similar compounds with electron-donating R. The adsorption isotherms of C₆H₅-3-AT and 5-C₃H₇SO₂-3-AT on the oxidized copper surface in a borate buffer solution at a constant potential of E=0.0 V are described by the complete Temkin equation with free energies of adsorption 93 and 96 kJ/mol, respectively. The minimum concentration that suppresses the first active dissolution peak on copper is lower for substituted 3-R-3-AT than for 3-AT itself.

The work is devoted to the analysis of materials based on a model adaptive composite of different compositions. The possibilities of mass spectrometry with visualization are demonstrated in order to study the surface of materials, including side cuts. Two-dimensional diagrams of ion distribution over the studied surfaces are constructed. The developed technique made it possible to detect both organic and inorganic components of model composites. The presented method for visualizing mass spectrometric data with laser desorption/ionization allows for the analysis of the surface of composite materials, the assessment of their exposure to aggressive environments, and the acquisition of important information about the surface structure and the distribution of compounds throughout the thickness of the sample, demonstrating the uniqueness of the proposed approach.

The effect of hot vapors of an octadecylamine–benzotriazole mixture on the corrosion resistance of monolithic copper and electroplated copper coating was studied. It was found that the inhibitor efficiently suppresses the initiation of corrosion of both materials in fog spray. Optimal conditions for chamber treatment of copper are 20 min at 150°C. This mode enables the formation of a stable protective film without disturbing the decorative properties of the surface. It was shown that mixture inhibitor forms films on the copper surface, which reduce the active metal surface area and stabilize its passive state. 

An overview of the studies carried out in the Laboratory of the Structure of Surface Layers of the Institute of Physical chemistry and Electrochemistry of the Russian Academy of Sciences from the 1950s to the present time in the field of the structure of electrodeposited metals and alloys is presented. In addition to the data on the structure itself obtained by electron microscopy, X-ray diffraction, and other methods, attention is paid to studies of thermal effects in the course of deposition, the growth of whiskers after deposition, and the processes of postelectrolysis restructuring.

This article presents a scholarly historical reconstruction of the formation and development of the Russian school of chemical vapor deposition of tungsten, which originated at the Institute of Physical Chemistry of the USSR Academy of Sciences in the 1950s and has continued to evolve to the present day. The prerequisites for the emergence of this research area, the role of key contributors, the evolution of theoretical concepts describing the process mechanism, the technological achievements, and the industrial implementation of the developed coatings are examined. Special attention is devoted to the fluoride method based on the reduction of WF₆ by hydrogen, the development of high-temperature protective coatings, the investigation of structural and mechanical properties, and the advancement of gas-phase alloying as well as the synthesis of carbide and multilayer composite tungsten-based materials. The article summarizes research data on the physicochemical properties and protective performance of coatings produced by gas-phase methods, which have undergone further significant development at the beginning of the 21st century.