The paper studies the influence of sulfur impurity on the high-temperature resistance at T = 1000 °C for 500 hours of cast heat-resistant hafnium-containing nickel alloy VZhM200. It has been found that with the increase of the sulfur content, the high temperature resistance of the alloy decreases, and with the increase of its content from 0,0038 to 0,0130 wt. %, a slowdown in the high-temperature oxidation process is observed. This is due to the fact that sulfur is concentrated in the composition of hafnium-containing carbides, thereby reducing its diffusion from the volume to the surface of the material, which prevents the destruction of the forming oxide layer.

The paper presents comparison of main mechanical properties of rods, forgings and castings made of heat-resistant titanium pseudo-alpha alloy VT46 (VT46L), as well as similar alloys of the same class and application in the range of operating temperatures. Values of long-term strength at 500 and 550 °С have been presented specifically. The article shows microstructure study results of the said semi-finished products material. It provides a generalized description of the technology for manufacturing semi-finished products, indicating features that distinguish VT46 alloy from serial titanium alloys. Possible application areas of VT46 alloy in relation to engine parts and aircraft equipment are discussed.

The article presents the study of the structure, physical and mechanical properties of high-temperature carbon fiber based on bismaleinimide binder, obtained by various methods of molding: autoclave, press and vacuum. The study results of samples obtained by non-destructive testing methods, such as ultrasonic echo-pulse method and X-ray computed tomography method, which allowed to estimate quantitative values of porosity. Also, the comparison of strength characteristics and the level of their preservation at elevated test temperatures have been conducted.

This article presents the overview of modern polymer composite materials and polymer fillers used in helicopter blades in Russia and worldwide, as well as the history and prospects for their development. The main requirements for helicopter blade materials, examples of blade elements using PCM and polymer filler, basic reinforcement schemes and manufacturing technologies are presented. The analysis of modern carbon fillers is carried out, and the main differences between medium-modulus and high-strength carbon fibers are considered.

The paper presents the results ofelectrochemical studies of samples of corrosion-resistant steels (08kH18N10, 12kH18N10T) and aluminum alloys (1163, В95, 1933) both with and without coatings. We have determined the values of the steady-state potentials, impedance modulus, the potential and current density of contact corrosion, and the tans passivation potential. Based on the results of 2160-hour corrosion tests in the salt spray chamber on samples packages made of corrosion-resistant steels with electroplating and aluminum alloys with nonchromated anodic coating, we have selected an electrodeposited coating that is as good as cadmium coating in its protective ability.

The paper presents the results of heat resistance testing of ZhS32 alloy samples with serial ion-plasma heat-resistant and corrosion-resistant coatings. The tests demonstrated heat resistance at 1150 °C for 400 h and resistance to sulfide-oxide corrosion at 750 and 850 °C for 30 cycles. According to the test results, the coatings SDP-42 + VSDP-16 and VSDP-3 + VSDP-16 exhibit the highest set of protective properties. These coatings prevent diffusion of sulfur and chlorine from the surface into the inner layers of the heat-resistant alloy. The above mentioned coatings out-perform the standard corrosion-resistant coating SDP-1T + VSDP-13 under test conditions.

Currently, special requirements are imposed to the quality and appearance of the coverings used to protect elements of cabin and dashboards in aircraft. These requirements are associated with the need of providing high level of visual and overall performance of the pilot both under natural and artificial lighting, as well as with fire safety. This work is devoted to studying the properties of the decorative, fireproof, wear-resistant matte paint coatings obtained using a two-phase polymer system: polyester – fluoropolyurethane oligomer.

This paper examines the properties of a water-based enamel designed for coating interior structural elements of aircraft. We have performed a comparative analysis of the properties of the developed enamel with existing domestic and imported analogues. It is shown that the developed enamel meets modern fire safety requirements. The use of an aqueous styrene-(met) acrylates copolymer dispersion ensures environmental friendliness and safety by eliminating toxic solvents and enabling a high level of physical and mechanical properties.

The article presents the results of an information search and examines the main trends in the creation of electrically conductive paints and varnishes and coatings based on them for removing static electricity from the external surfaces of aircraft components. The basic requirements for the selection of components for the production of electrically conductive paints and coatings have been defined. The most promising directions in the field of development and research of electrically conductive paint coatings have been identified.

The article analyzes publications on various methods of modification of water-based acrylic copolymers and provides the advantages and disadvantages of water-based acrylic coatings.  The physical and chemical modification methods that make it possible to change the properties of water-based acrylic copolymers are considered. The paper shows the practical use of these modification methods for increasing water and corrosion resistance, as well as thermal and physical-mechanical properties of water-based acrylic coatings.

This study examines the properties of paint coatings based on a universal cold-curing putty with fluoroplastic, fluoro-rubber and polyurethane enamels in their initial state and after exposure to various operational factors. The results show that the use of putty in systems with different enamels does not affect the appearance, fungal growth and adhesion of paint coatings. The impact resistance of coating systems containing this putty shows no deterioration after testing (compared to systems with the putty in its initial state).

In the fifth part of the series of articles on the climatic aging of paint coating systems, the features of the change in the color indices of the CIE L*a*b* model under the influence of sand and dust in laboratory conditions are studied. It is shown that for different paint coating systems with the addition of red and gray pigments, the dependences of the change in lightness and chromatic indices differ significantly. For all the studied systems, the contribution of the L, a, b indices to the change in color distance is quantitatively characterized.