Metallographic studies of the structure and tribological studies in conditions of dry sliding friction of sparingly alloyed high nitrogen steel samples after quenching in the temperature range from (Ac₃ – 50) to (Ac₃ + 250) °C were carried out in this work. Metallographic analysis showed that with an quenching temperature increasing, the grain size increases and the martensitic structure fineness decreases. According to the tribological studies results, it was found that after quenching in the temperature range (Ac₃ + 100)–(Ac₃ + 150) °C, the content of austenite saturated with carbon and nitrogen increases, which leads to a decrease in the friction coefficient and an increase in wear resistance.

Material, obtained by HIP-consolidated powder of Ni-base superalloy VZH172 had been investigated. Influence of HIP temperature on grain microstructure of consolidated material was determined; distribution of eutectic phase in structure was investigated. Mechanical testing of the HIP-processed blank of VZH172 alloy after heat-treatment was carried out. The results were compared with the properties of wrought material produced by the conventional technology.

It is shown in this work the advantages of using Al–Cu–Mg system heat-resistant aluminum alloys in the fuselage elements of supersonic aircraft. Comprehensive studies of welded joints of aluminum alloys V-1213 and 1151 sheets produced by laser welding and friction stir welding have been carried out. Tests for weldability, strength, plasticity were carried out and low-cycle fatigue of welded joints was determined. The results of tests within the studied ranges of laser welding and friction stir welding modes of alloys V-1213 and 1151 are presented.

The results of the work of the NRC «Kurchatov institute» – VIAM for the development of production of semi-finished products from heat-resistant titanium pseudo-α-alloy VT41. The directions of adjustment of the alloy composition, and the prospects of wider application of alloy in the manufacture of welded components of gas turbine engines are presented. Foreign experience of manufacturing of deformable semi-finished products from the analog alloy Ti-834 (IMI 834) is given. The peculiarities of microstructure and its components formed at various conditions of heat treatment are considered.

The article shows the main directions for the development of a formulation for frost-resistant ozone-resistant rubber for sealing purposes. Currently, there are problems with the durability of the operation of parts made of rubber grade NO-68-1 due to the instability of the raw material base of rubbers. A comprehensive analysis of rubbers of various composition and structure was carried out. Based on the results of the analysis, ethylene-propylene, ethylene-propylene diene, and propylene oxide rubbers were selected as the polymer base. Mixtures of various compositions are made from these rubbers. According to the test results, the optimal composition of frost-resistant ozone-resistant rubber was selected.

A review of photocurable acrylate compositions, which can be used for a wide range of tasks, including 3D printing, has been carried out. The main (meth)acrylate monomers, oligomers and diluents, comonomers and special additives are considered. The influence of the structure of monomers and active diluents on the properties of the polymer is described. The mechanisms of photoinitiation and the mechanisms of chain transfer agents are presented. The influence of the introduction of epoxy resins into the composition of photocurable acrylate compositions is indicated. The conclusion is made about the possibilities of wide modification of such compositions.

The article is devoted to the testing of fiberglass grade VPS-53K treated with atmospheric pressure plasma in the production environment of the manufacturer of the main and tail rotor blades of a helicopter. It has been established that atmospheric pressure plasma increases the wettability of the fiberglass surface and the strength of the adhesive joint of «the spar‒sheathing» (fiberglass grade VPS-53K). The guaranteed time interval between the processing of fiberglass with atmospheric pressure plasma and the gluing process is no more than 6 mon.

A scientific and technical literature review is presented in the field of research on copper-based fibrous composite materials (CM) reinforced with continuous silicon carbide fibers. The main methods of manufacturing fibrous CMs based on copper are briefly mentioned. The influence of volume fractions on the reinforcement of CM, on the mechanical and thermophysical properties of fibrous CM based on copper is considered. A study of the influence of the structure of a fibrous CM based on copper with the use of binders as adhesive components with the formation of a strong bond between the copper matrix and fiber on the properties of CM is described.

The article is described to a theoretical study by quantum chemistry of the reaction of silaethylene formation from methylsilane by hydrogen elimination with the search for a transition state. Geometry and thermodynamic characteristics of molecular structures were calculated. The search for the transition state was carried out by scanning the potential energy surface of the molecule of the proposed structure. The calculation of the rate constant and activation energy of the direct reaction of the formation of an intermediate state for the chemical reaction 1,2-hydrogen elimination has been carried out.

The analysis of the influence of technological parameters on the structure of a polycrystalline material based on lanthanum hexaboride produced by spark plasma sintering is carried out. It is established that an increase in the sintering temperature from 1700 to 1850 °C contributes to the formation of a favorable structure of ceramic material with equiaxed grains up to 30 microns in size and closed small-sized pores with a volume fraction of up to 3 %. Alloying ceramic material with nickel to its content of no more than 0.5 % by weight allows to obtain such a structure at a lower sintering temperature: 1700 °C.

Fire tests were carried out to determine the effectiveness of the fire-retardant intumescent coating. It has been established that the standard methodology for conducting fire tests does not provide adequate reproducible results. A modification of the methodology was proposed and a large number of samples (˃30) were tested. It has been established that when using a modified test procedure, high reproducibility of the results obtained is ensured.

Currently, to determine the degree of de-icing protection when using anti-icing coatings, experimental benches and laboratory installations are used, in which in most cases two types of tests are performed: direct mechanical and centrifugal force. The variety of methods, facilities, and other various factors makes it difficult to compare the established data and the required characteristics of anti-icing properties of coatings. An analysis of the methods and installations used to determine ice adhesion, as well as the factors that can affect the test results, has been conducted.