This publication continues the review of the literature on the vapor-phase protection of metals by inhibitors. The main attention is paid to inhibitors that are capable of irreversible adsorption on the surface and, owing to this, possess an anticorrosive aftereffect. The specific features of the so-called chamber protection of metals are analyzed, namely, protection is performed by short-term treatment of items in a closed space (chamber) at elevated temperature in vapors of inhibitors that are low-volatile under normal conditions. It is shown that chamber treatment is a promising method for temporary protection of metals that has significant advantages over traditional vapor-phase protection with volatile inhibitors. It is found that an elevated temperature in the chamber not only provides sufficient volatility of inhibitors for vapor phase protection but also favors their chemisorption.

Metal corrosion and the prospect of inhibiting this process have received much interest to society and scientific research. The annual global cost of corrosion is $2.5 trillion, equivalent to roughly 3.4% of the world's gross domestic product. Implementing corrosion prevention best practices could result in global savings of 15–35% of that cost. Great numbers of research were documented and dedicated on the triazole nucleus as fascinating corrosion inhibitors of various metals in hostile media, owing to their unique electronic structure possessing conjugated π and unshared pairs of electrons on the nitrogen atoms facilitates their adsorption on the metal surface. Thus, the physical and chemical interactions occurring between the active centers of triazoles and d-orbitals of metallic materials occurred to form a film on the surface. The nature of inhibitor activity is disclosed through polarization studies (cathodic, anodic or mixed-type). The range of various substituents on the triazole ring offers a vast array of inhibitory effects. Temperature and inhibitor concentration effects must also be regarded when evaluating the corrosion activation and adsorption parameters supported further by the quantum chemical parameters such as DFT and molecular dynamics simulations. In this review, we looked through several instances of the use of distinct substituted triazole nucleus as significant corrosion inhibitors for different metals in various aggressive media.

In the present work, the possibility of increasing the corrosion resistance of Mg90 by layer-by-layer modification of its surface in solutions of 13 mM sodium oleate and 3 mM 8‑hydroxyquinoline was investigated. The influence of both the sequence of inhibitor application and the thickness of the oxide-hydroxide sublayer was evaluated. It is shown that the coating of 13 mM sodium oleate//3 mM 8-hydroxyquinoline formed on air‑oxidized Mg90 provided the most effective corrosion protection of metal than their individual layers. Increasing the thickness of the oxide sublayer did not contribute to increasing the protective effect of the multilayer coatings, but significantly increased the corrosion resistance of Mg90 with films of individual inhibitors.

In the present article the corrosion behavior of St3 mild steel in a liquid mineral fertilizer (LMF), namely in (NН₄)₂SО₄ at different concentrations (5, 10, 25, 40% and in a prototype liquid fertilizer LikviFors brand NS 8:9) and temperatures (20, 35, 50 and 65°C) was studied. The evaluation of the corrosiveness of the liquid metallurgy included the study of corrosion of steel in three areas: in the bulk of the liquid, in saturated vapors above the solution, and along the waterline. All investigated solutions of (NН₄)₂SО₄at 20°C are characterized by a decrease in the steel corrosion rate with time. Increasing the temperature of the LMC leads to an acceleration of corrosion of mild steel, especially along the waterline and in the vapor-gas phase.

Ensuring the durability of paintwork materials (PWM) to the effects of climatic factors is a necessary problem, especially when they are used in tropical conditions. Wherein, tests in atmospheric conditions (field test) are the main method for confirming the durability of PWM. With that, accelerated testings of PWM in many cases allow to accelerate the receipt of preliminary results for making a decision to conduct field tests. The search for reliable correlations between the results of field and accelerated tests of PWM has been the subject of research for decades. The identification of these correlations allows to quickly assess the durability of paint coating systems (PCS) to the effects of climatic factors and predict the degradation of their decorative and protective properties. This article presents the results of field tests for 5 years in the marine tropical atmosphere of Vietnam of three PCS for the protection of metals and the results of accelerated tests of the same systems. A correlation was obtained for the degradation of PCS properties in terms of gloss and color. Predicting the service life of PCS was carried out taking into account the recommendations of GOST 9.401-2018.

Volatile corrosion inhibitors (VCI) are widely used to protect ferrous and non-ferrous metals from atmospheric corrosion. The possibility of at least partial sealing of the space is one of the most important conditions that create a prerequisite for the effective use of VCI. However, there are some factors that limit the use of VCI. Intensive condensation of moisture is one of these factors, so the ability of some surfaces to maintain protective properties in such harsh conditions deserves special attention. This article discusses the protection of metals using VCI in conditions of periodic condensation of moisture on metals and alloys.

The article continues the analysis of the application of the ellipsometry method for the study metal corrosion inhibitors and considered joint, as well as induced adsorption of inhibitors and compositions based on them. Examples are given determination of the sizes of adsorbed monolayers, kinetics of their growth. Apart from already have become a common application of ellipsometry for the study of adsorption inhibitors from the aqueous phase, the application of this method for volatile corrosion inhibitors and chamber corrosion inhibitors.

The article discusses the possibilities of protecting aluminum alloys AMg6 and D16 with aqueous solutions of corrosion inhibitors such as carboxylates and trialkoxysilanes. The effectiveness of their inhibition of anodic dissolution of the AMg6 alloy in a neutral borate buffer solution (pH 7.4) was studied. The protective ability of the layers was assessed using the drop test method, tests in a thermal moisture chamber and a salt fog chamber. The effectiveness of processing aluminum alloys in aqueous solutions of organic inhibitors is correlated with the protective ability of chromate films. It has been shown that modification of aluminum alloys with a mixture of oleyl sarcosinate and aminoethylaminopropyltrimethoxysilane at a ratio of 3:1 is the most effective method of protection against atmospheric corrosion.