Articles

 


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1.
dx.doi.org/ 10.18577/2307-6046-2022-0-3-3-14
УДК 66.017
Obraztsova E.P., Titkova Yu.M., Donskih I.N.
HEAT-RESISTANT FIBERS AND NON-WOVEN MATERIALS BASED ON THEM FOR USE IN FILTER ELEMENTS OF GAS TURBINE ENGINES (review)

Presented an overview of heat-resistant fibers and nonwovens based on them. Their comparative characteristics, description, advantages and disadvantages for use as a basis for the use of afterburner regulators of gas turbine engines as part of air filters. The conclusion is made about the possibility of using nonwovens and the prospects for their application, as well as about a possible way to improve the characteristics of nonwovens to adapt to operating conditions at elevated and lowered temperatures.

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2.
dx.doi.org/ 10.18577/2307-6046-2022-0-3-15-26
УДК 620.1:53.093:53.096
Kurshev E.V., Lonskii S.L., Mekalina I.V.
INFLUENCE OF LONG CLIMATIC AGING ON MICROSTRUCTURE OF SURFACE OF ORGANIC GLASS IN SEMI-ARID AND SUBTROPICAL CLIMATE

Products from organic glasses are widely used in aviation engineering for different types of glazing which work in difficult operational conditions, for example, are exposed to influence of low and high temperatures, moisture, ultra-violet radiation, etc. These factors can influence operational reliability of organic glass. Now application of the oriented polymethyl methacrylate AO-120 organic glass is most widespread in designs of aviation glazing. In the real work results of research of microstructure of surfaces of the AO-120 or-ganic glass which has undergone long influence of atmospheric factors in different climatic zones of the USA (Arizona and Florida) are provided.

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3.
dx.doi.org/ 10.18577/2307-6046-2022-0-3-27-34
УДК 678.067.5
Kolokoltseva T.V., Popov J.O., Usacheva M.N., Gromova A.A.
PREPREGS AND FIBERGLASS BASED ON VSR-3М BINDER AND FIBERGLASS FABRICS FOR USE IN HELICOPTER BLADES

Presents the main results on the development of glassfiber/epoxy fabric prepregs and composites based on epoxy resin VSR-3М and fiberglass woven fabrics T-25 (VMP)-78, T-10-14 and art. 120. The process of development of prepregs, technology of their manufacture at the impregnation plant, the choice of the main parameters of impregnation are described. Correct selection of impregnation parameters guarantees obtaining materials with the required properties. The results of studying the properties of prepregs obtained according to the selected technological modes and properties of fiberglass compocites are also presented. 

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4.
dx.doi.org/ 10.18577/2307-6046-2022-0-3-35-43
УДК 621.763
Mishkin S.I., Klimenko O.N., Kutsevich K.E.
DETERMINATION OF STICKINESS OF PREPREGS ON THE BASIS OF CARBON FILLERS THE SOUNDING METHOD

Results of work on determination of stickiness of the carbon prepregs developed in Research Center Kurchatovsky institut VIAM are given. The method and the equipment for determination of stickiness of prepregs is described. The comparative analysis of stickiness of prepregs on different epoxy binders and structures of carbon fillers is carried out. The interrelation between stickiness and short-term impact of temperature on technological properties of semi-finished products is shown. Stickiness of the prepregs used for manufacturing of aviation products, using the automated laying is investigated.

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5.
dx.doi.org/ 10.18577/2307-6046-2022-0-3-44-53
УДК 66.017
Ilyukhina M.A., Timonin V.V.
RESEARCH OF OPERATING PROPERTIES OF RTV SILICONE SEALANTS AT ELEVATED TEMPERATURES (UP TO +400 °C) AND WAYS OF THEIR INCREASE

On the basis of a number of research works results on heat ageing of silicone sealants VIKSINT were received. Test results after heat ageing of plates of sealants and samples of the sealants brought on metal are presented. Temperature dependences of properties of sealants on speed and duration of thermal ageing are shown. Resources of work of sealants are defined at various temperatures. Ways of increase of operating properties of silicone sealants are considered.

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6.
dx.doi.org/ 10.18577/2307-6046-2022-0-3-54-63
УДК 678.8
Ponomarenko L.A.
ABOUT WAYS OF STRUCTURE MODIFICATION OF A KNITTED FILLERS FOR POLYMERIC COMPOSITE MATERIALS (review)

Methods of modifying the structure of knitted fillers for the manufacture of polymer composite materials (PCM) are considered. The specific features of the use of tuck and float loops are described, the issues of the influence of additionally introduced threads of various compositions in the structure of knitwear on the mechanical properties of filler and PCM are considered. Special attention is paid to the rib type of interlacing of knitted fabrics, which, with a low density of filler, contributes to increasing the strength of the PCM.

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7.
dx.doi.org/ 10.18577/2307-6046-2022-0-3-64-74
УДК 620.18:621.762
Khudnev A.A., Batienkov R.V., Bolshakova A.N., Dvoretskov R.M.
STUDY OF THE FEATURES OF COMPACTION OF POWDER COMPOSITE MATERIALS BASED ON MOLYBDENUM USING SPARK PLASMA SINTERING

Composite dispersion-strengthened materials of the Mo–Ti–Zr–C and Mo–Hf–C systems were investigated in this work. Samples were obtained by powder metallurgy methods using mechanical alloying with subsequent compaction of as-received powder by a spark plasma sintering. It was found that the main strengthening phase in the obtained material of the Mo–Ti–Zr–C system is molybdenum oxide with titanium, zirconium and molybdenum dissolved in it. The material of the Mo–Hf–C system contains two types of reinforcing phase: molybdenum oxides and hafnium oxides. An increase in the sintering temperature by 200 °C did not lead to an increase in the density of materials, but led to the growth of grains and a carbide layer on the surface of the samples.

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8.
dx.doi.org/ 10.18577/2307-6046-2022-0-3-75-90
УДК 621.318.2
Morgunov R.B., Korolev D.V., Valeev R.A., Piskorsky V.P.
LASER MODIFICATION OF RARE EARTH MAGNETIC ALLOYS (review)

Аnalyzes the physico-chemical processes in the laser processing of magnetic materials. It is shown that not only the duration of the laser pulse and its power (the main parameters usually taken into account when laser modification of the microstructure of the material), but also the wavelength, polarization of light can affect the result of laser processing. The local temperature caused by laser irradiation depends both on the size of the irradiated object, its chemical composition, heat capacity and thermal conductivity of the material, and on the rate of energy exchange between thermal reservoirs associated with the atomic, electron and spin subsystems of the magnet.

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9.
dx.doi.org/ 10.18577/2307-6046-2022-0-3-91-101
УДК 678.83
Kan A.Ch., Kulagina G.S., Ayupov T.R., Zhelezina G.F.
THE INFLUENCE OF ENVIRONMENTAL FACTORS ON THE CHARACTERISTICS OF ANTIFRICTION ORGANOPLASTY ORGALON AF-1M

The influence of climatic factors, water and industrial fluids on the strength of the connection of antifriction organic plastics with a metal base is investigated. It was found that the preservation of the shear strength of the binder AFK-101 and the strength when peeling the organic plastics from the metal substrate are 60–82 % after prolonged exposure in these environments, which indicates the reliability of the connection of the antifriction organic plastics with the metal substrate in the composition of heavily loaded plain bearings during operation under the influence of environmental factors

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10.
dx.doi.org/ 10.18577/2307-6046-2022-0-3-102-120
УДК 621.924.93
Dyshenko V.S., Donetskiy K.I., Minibaev M.I., Ablyaz T.R., Shlykov E.S., Shiryaev V.V.
METHODS OF MECHANICAL AND ELECTRICAL DISCHARGE MACHINING OF POLYMER COMPOSITE MATERIALS (review)

Polymer composite materials (PCM) are increasingly being used in various industries. At the same time, knowledge of PCM processing is needed in order not to negate these advantages. An overview of traditional PCM processing methods is presented: cutting with abrasive wheels with and without cooling, milling on a numerically controlled machine, as well as such unconventional methods as: abrasive water jet cutting (AWG) and electrical discharge machining (EDM). Technological features, comparison of cutting modes are described and technological techniques are disclosed.

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11.
dx.doi.org/ 10.18577/2307-6046-2022-0-3-121-134
УДК 620.193+620.197
Zavarzin S.V., Oglodkov M.S., Chesnokov D.V., Kozlov I.A.
HOT CORROSION AND PROTECTION OF MATERIALS OF GAS TURBINE ENGINES (review)

In this paper, we consider the issues of the mechanism of hot corrosion. The analysis of modern methods of laboratory research of corrosion processes occurring at elevated temperatures is carried out. A significant part of the work is devoted to modern technology of protection against corrosion of metallic materials. The development of technologies for slurry, chemical, pyrochemical, electrochemical and sol-gel coatings, as well as methods of diffusion saturation of the surface, is relevant today. Nevertheless, the technology of ion-plasma treatment is the most effective method of applying protective coatings.

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12.
dx.doi.org/ 10.18577/2307-6046-2022-0-3-135-144
УДК 620.1
Panin S.V.
MODELING AND PREDICTION OF OVERHEATING TEMPERATURES OF PVC PROFILE SAMPLES

The main purpose of this work was to simulate the temperatures of maximum heating of PVC-profile samples in the climatic conditions of the city of Gelendzhik and their modeling in other climatic conditions (the city of Moscow). The work evaluates the maximum heating temperatures of the surface of PVC-profile samples having a complex spatial shape, evaluates various approaches to its modeling and forecasting in other climatic conditions. The possible influence of the shape of the samples on the processes of their heat exchange with the environment is noted.

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13.
CONTENТS

Polymer materials

 

Obraztsova E.P., Titkova Yu.M., Donskikh I.N. Heat-resistant fibers and non-woven materials based on them for use in filter elements of gas turbine engines (review)

 

 

Kurshev E.V., Lonskii S.L., Mekalina I.V. Influence of long climatic aging on microstructure of surface of organic glass in semi-arid and subtropical climate

 

 

Composite materials

 

Kolokoltseva T.V., Popov Yu.O., Usacheva M.N., Gromova A.A. Prepregs and fiberglass based on VSR-3М binder and fiberglass fabrics for use in helicopter blades

 

 

Mishkin S.I., Klimenko O.N., Kutcevich K.E. Determination of stickiness of prepregs on the basis of carbon fillers the sounding method

 

 

Ilyukhina M.A., Timonin V.V. Research of operating properties of RTV silicone sealants at elevated temperatures (up to +400 °C) and ways of their increase

 

 

Ponomarenko L.A.About ways of structure modification of a knitted fillers for polymeric composite materials (review)

 

 

Khudnev A.A., Batienkov R.V., Bolshakova A.N., Dvoretskov R.M. Study of the features of compaction of powder composite materials based on molybdenum using spark plasma sintering

Morgunov R.B., Korolev D.V., Valeev R.A., Piskorsky V.P. Laser modification of rare earth magnetic alloys (review)

 

 

Kan A.Ch., Kulagina G.S., Ayupov T.R., Zhelezina G.F. The influence of environmental factors on the characteristics of antifriction organoplasty Orgalon AF-1M

 

Dyshenko V.S., Donetskiy K.I., Minibaev M.I., Ablyaz T.R., Shlykov E.S., Shiryaev V.V. Methods of mechanical and electrical discharge machining of polymer composite materials (review)

 

Protective and functional

coatings

 

Zavarzin S.V., Oglodkov M.S., Chesnokov D.V., Kozlov I.A. Hot corrosion and protection of materials of gas turbine engines (review)

 

 

Material tests

 

Panin S.V. Modeling and prediction of overheating temperatures of PVC profile samples

 

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