Last number - Электронный научный журнал "ТРУДЫ ВИАМ"

Last number

 
№2  2025

1.
dx.doi.org/ 10.18577/2307-6046-2025-0-2-3-13
УДК 669.15
Sevalnev G.S., Oblivantsev K.D., Dulnev K.V., Sevalneva T.G.
STRUCTURE AND PROPERTIES OF ELECTROSPARK COATING BASED ON HIGH-NITROGEN STRUCTURAL STEEL

The structure, hardness and tribological characteristics of the electrospark coating based on high nitrogen structural steel of the Fe–C–Cr–Mn–Mo–Ni–V alloying system were studied. It was found that the maximum thickness of the coating based on steel is 34,5 μm. Samples with a single-layer coating of 18 μm thick have the best wear resistance. Application of the coating helps to increase the wear resistance of 30KhGSN2A steel by more than 3 times.

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2.
dx.doi.org/ 10.18577/2307-6046-2025-0-2-14-24
УДК 669.018:669.721.5
Mukhina I.Y., Leonov A.A., Trofimov N.V., Tokarev M.S.
TABLETED MODIFIER FOR CASTING MAGNESIUM ALLOYS

Currently, the problem of expanding the use of cast magnesium alloys in promising products of aerospace and military equipment is relevant. High demands are placed on parts made of magnesium alloys for mechanical; towards corrosion and technological characteristics and operating conditions. The main task for technologists, developing serial and new materials and technologies for production of alloys of the Mg–Al–Zn–Mn system is to obtain alloys with an equiaxed fine-dispersed structure that ensures high properties in castings and parts.

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3.
dx.doi.org/ 10.18577/2307-6046-2025-0-2-25-46
УДК 669.715
Benarieb I., Puchkov Yu.A., Sbitneva S.V., Shorstov S.Yu., Shumeyko R.M.
QUENCH SENSITIVITY OF WROUGHT HEAT-TREATABLE ALUMINUM ALLOYS OF THE Al–Mg–Si SYSTEM (review)

The article presents a review of the scientific literature on quenching sensitivity of wrought heat-treatable aluminum alloys of the Al–Mg–Si system (6XXX series). The analysis of the current state and the latest achievements in this field of research is carried out. The factors influencing the quenching sensitivity are considered, and some aspects of the effect of the quenching rate on aging process and properties of these alloys are described. It is revealed that an important trend in the study of phase transformations of alloys of the 6XXX series during quenching process is the use of differential scanning calorimetry and mathematical modeling.

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4.
dx.doi.org/ 10.18577/2307-6046-2025-0-2-47-64
УДК 678.012:543.544.15:620.187.3
Ponomarenko S.A., Kurshev E.V., Lonskii S.L.
INVESTIGATION OF DEGRADATION MECHANISMS OF THERMOPLASTIC POLYURETHANE BY STORAGE AT LONG TIMES IN AVIATION KEROSENE TS-1 BY GEL PERMEATION CHROMATOGRAPHY, OPTIC AND SCANNING ELECTRON MICROSCOPY, AND FTIR SPECTROSCOPY

The article presents the results of the analysis of thermoplastic polyurethane samples in aviation kerosene TS-1 under various conditions. The results of the analysis of samples by gel permeation chromatography suggest the presence in the sample of components with unreacted functional groups that allow to reduce the impact of degradation factors under mild conditions. The study of the complex influence of more active factors using additional methods of analysis allowed us to better estimate the mechanism of material degradation and various characteristics of its decomposition zone.

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5.
dx.doi.org/ 10.18577/2307-6046-2025-0-2-65-74
УДК 621.318.1
Potapov M.V., Valeev R.A., Morgunov R.B., Piskorsky V.P.
PROPERTIES OF SINTERED MAGNETS (Pr, Nd, Ce, Dy)(Fe, Co)B OBTAINED FROM UNREFINED RARE EARTH METALS

Sintered materials of the following composition (NdWPrpDyzCex)–(Fe1-yCoy)–B (w ≤ 0,44; p ≤ 0,45; x ≤ 0,13; z ≤ 0,41; y ≤ 0,26) were studied. Hysteresis curves of demagnetization by induction and magnetization are given. It was found that the admixture of neodymium and cerium in the studied quantities does not adversely affect the magnetic characteristics of sintered materials. Thus, suitable sintered materials can be made from insufficiently purified rare earth metals, although the value of the temperature coefficient of induction of materials of such composition is insufficient for use in navigation devices.

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6.
dx.doi.org/ 10.18577/2307-6046-2025-0-2-75-88
УДК 621.763
Artemenko N.I., Benklyan A.S., Stekhov P.A., Aleksandrov D.A.
MATERIALS FOR APPLYING CERAMIC LAYERS OF HEAT-PROTECTIVE COATINGS

The main methods and materials for applying ceramic layers of heat-protective coatings are considered. The main methods (electron beam method, magnetron sputtering method and atmospheric plasma spraying method) of manufacturing materials for applying ceramic layers of heat-protective coatings for various applications are considered. There are shown methods to increase sphericity and strength of particles for powder materials, which increase stability and reproducibility of the plasma spraying process. 

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7.
dx.doi.org/ 10.18577/2307-6046-2025-0-2-89-99
УДК 666.1.056.8:539.231
Sorokin I.A., Solovyanchik L.V., Mekalina I.V., Tsapenko A.N.
OPTICALLY TRANSPARENT POLYMER FILMS WITH ANTI-REFLECTIVE COATING

At present, the most appropriate way to prevent mechanical damage to the screens of indicating devices is to use protective glasses on a polymer base, which can be integrated into the finished design. To improve the quality of displayed information, it is necessary to reduce the intensity of glare, as well as to ensure maximum light transmission of these products, which can be achieved by applying optical coatings. This paper presents the results of research on obtaining a four-layer anti-reflective coating based upon TiО2 and SiО2 on a polymer film with and without an adhesive layer, and presents their characteristics.

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8.
dx.doi.org/ 10.18577/2307-6046-2025-0-2-100-111
УДК 621.891
Sevostyanov N.V., Budanova E.S., Khvatov V.D., Fomichev A.N.
TRIBOTECHNICAL FEATURES OF METAL COMPOSITE MATERIALS REINFORCED WITH NITRIDES

The paper presents the results of experimental determination of friction coefficient and wear rate of nitride-reinforced nickel and copper matrix CMs in friction pairs with different steel grades under varying load and sliding speed. It is shown that irrespective of the matrix material, nitride-reinforced MCMs have a high friction coefficient. At low sliding velocities and load, the adhesion mechanism of friction prevails, but with the increase of these parameters, the share of abrasion mechanism of friction increases. As an additional study, the structures of the investigated MCMs were analyzed.

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9.
dx.doi.org/ 10.18577/2307-6046-2025-0-2-112-120
УДК 620.1:678.8
Laptev A.B., Sadkov V.R., Nikolaev E.V., Zeleneva T.O.
EFFECT OF WIND ON TEMPERATURE AND MOISTURE CONTENT OF MATERIAL SAMPLES DURING CLIMATIC TESTS

Based on the known thermodynamic dependencies, formulas for calculating changes in the surface temperature of a sample and the evaporation time of free moisture from its surface under the influence of wind are derived. Calculations allow, using meteorological data, to estimate the actual value of the sample temperature and the time until complete removal of free moisture from the surface at low air humidity or, conversely, the humidification time at high humidity during climatic tests of materials. The use of the derived dependencies will allow us to take into account the influence of liquid precipitation and wind when predicting the climatic resistance of materials.

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10.
CONTENТS

Heat-resistant alloys and steels

 

Sevalnev G.S., Oblivantsev K.D., Dulnev K.V., Sevalneva T.G. Structure and properties of electrospark coating based on high-nitrogen structural steel

 

 

Light-metal alloys

 

Mukhina I.Yu., Leonov A.A., Trofimov N.V., Tokarev M.S. Tableted modifier for casting magnesium alloys

 

Benarieb I., Puchkov Yu.A., Sbitneva S.V., Shorstov S.Yu., Shumeyko R.M. Quench sensitivity of wrought heat-treatable aluminum alloys of the Al–Mg–Si system (review)

 

 

 

Polymer materials

 

Ponomarenko S.A., Kurshev E.V., Lonskii S.L. Investigation of degradation mechanisms of thermoplastic polyurethane by storage at long times in aviation kerosene TS-1 by gel permeation chromatography, optic and scanning electron microscopy, and FTIR spectroscopy

 

 

Composite materials

 

Potapov M.V., Valeev R.A., Morgunov R.B., Piskorsky V.P. Properties of sintered magnets (Pr, Nd, Ce, Dy)(Fe, Co)B obtained from unrefined rare earth metals

Protective and functional

coatings

 

Artemenko N.I., Benklyan A.S., Stekhov P.A., Alexandrov D.A. Materials for applying ceramic layers of heat-protective coatings

 

 

Sorokin I.A., Solovyanchik L.V., Mekalina I.V., Tsapenko A.N. Optically transparent polymer films with anti-reflective coating

 

 

Material tests

 

 

Sevostyanov N.V., Budanova E.S., Khvatov V.D., Fomichev A.N. Tribotechnical features of metal composite materials reinforced with nitrides

 

Laptev A.B., Sadkov V.R., Nikolaev E.V., Zeleneva T.O. Effect of wind on temperature and moisture content of material samples during climatic tests

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