Archive - Электронный научный журнал "ТРУДЫ ВИАМ"

Articles

 


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1.
dx.doi.org/ 10.18577/2307-6046-2020-0-11-3-10
УДК 543.51; 669.1
Alekseev A.V., Yakimovitch P.V., Legkodukhova I.S.
Determination of low contents (less than 0.0005%) of arsenic in nickel alloys by ICP-MS and AAS methods with electrothermal atomization

In this work, the determination of low contents (less than 0,0005 wt. %) of arsenic in complex alloyed samples of nickel alloys was carried out by means of inductively coupled plasma mass spectrometry (ICP-MS) and atomic absorption spectrometry with electrothermal atomization. Also, the ICP-MS method was used to determine the arsenic content in chromium, which is an alloying component of nickel alloys. A technique for dissolving a sample and preparing it for analysis is presented. Spectral interferences are eliminated by applying mathematical correction equations, a reaction-collision cell and using corrective additives. The correctness of the results obtained is confirmed by the analysis of certified reference materials of nickel alloys and chromium.

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2.
dx.doi.org/ 10.18577/2307-6046-2020-0-11-11-20
УДК 621.762
Knyazev A. E., Vostrikov A.V.
Sieving of powders additive and powder manufacturings (review)

Considers the features of powders obtained by various methods, their technological properties in relation to additive and granular manufacturing. The sequence of operations upon receipt of metal powder compositions is presented. The factors affecting the process of vibration sieving of metal powders and granules are described. The features and advantages of vibratory sieving on horizontally arranged circular sieves using ultrasonic cleaning to obtain specified trajectories of motion are shown. Criteria for evaluating the sieving efficiency are given and explanations are given for determining the particle size distribution of powders and granules.

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3.
dx.doi.org/ 10.18577/2307-6046-2020-0-11-21-30
УДК 669.715
Benarieb I., Romanenko V.A., Klochkova Y.Y., Ovchinnikov V.V., Sbitneva S.V.
Application of high-tech aluminum alloy V-1341 of Al–Mg–Si system for pipelines of aircraft products

In this paper a task in developing of industrial production of cold-worked thin-walled tubes from high-tech aluminum alloy V-1341 of Al–Mg–Si system was accomplished. Tubes are purposed for application in hydraulic and air conditioning systems of aircraft products. Results of investigation of the structure and mechanical properties of tubes during their technological process and heat treatment are presented. Forming of tubes was performed and construction elements of pipelines were produced, which are identical to pipelines of commercial airplanes.

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4.
dx.doi.org/ 10.18577/2307-6046-2020-0-11-31-37
УДК 678.5
Semenova S.N., Chaykun A.М.
Highly heat-resistant silicone rubber compositions (review)

A review of the scientific technical literature in the field of modern research on silicone rubber compositions with high temperature resistance, including those with fire-resistant properties, is presented. The polymer bases and heat-stabilizing and flame-retardant additives used in the developments, as well as methods for preparing rubber mixes and rubbers are shown. Features of compounding materials with a combination of heat resistance and fire-resistance are noted. The relevance of research for the needs of aviation equipment is shown.

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5.
dx.doi.org/ 10.18577/2307-6046-2020-0-11-38-47
УДК 678.067.5:614.814.41
Shuldeshov Е.М., Nazarov I.A., Ivanov M.S., Donskih I.N.
Decoratively finishing materials for wall panels of passenger cab and the crew cockpit of air vehicles (review)

Questions of development of decorative and finishing materials for wall panels of passenger cab and the crew cockpit of air vehicles in the Russian Federation and abroad are considered. The structure and structure of such materials are described, examples of implementation of their different options are given. The main ways of manufacturing of materials, and also requirements to them which performance is necessary for the admission to application in aviation engineering, and the requirements providing competitive advantage of materials in comparison with analogs are provided. The main directions of development of decorative and finishing materials are evaluated.

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6.
dx.doi.org/ 10.18577/2307-6046-2020-0-11-48-59
УДК 677.499
Doriomedov M.S.
Aramid fiber market: types, properties, application

The article is devoted to the consideration of the world and Russian market of aramid fiber. Provides information about the approximate production of aramid fibers in general and by types: para- and meta-aramid. The main trade names of aramid fibers, production facilities, main aramid producers in the world and in Russia, information about the properties of some brands of aramid fiber and indicative percentages of various fields of application in the global and Russian consumption of aramid fibers are given.

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7.
dx.doi.org/ 10.18577/2307-6046-2020-0-11-60-67
УДК 669.018.95
Nyafkin A.N., Shavnev A.A., Serpova V.M., Razmakhov M.G., Pahomkin S.I.
Investigation of impact of vacuum heat treatment on thermophysical properties of composite material of Al–SiC system with high content of reinforcing phase

The results of investigation of thermal treatment influence on thermophysical properties of metal composite material (MCM) based on aluminium casting alloy АК9ч (АЛ4) grade of Al–Si–Mg system reinforced with silicon carbide particles with content of reinforcing particles of 69±1% (volume) are given. MCM is made by solid-phase method followed by vacuum annealing. There are also presented studies of thermophysical characteristics of the material: thermal conductivity, temperature coefficient of linear expansion in the temperature range from 20 to 400 °C and density. It is shown that thermophysical characteristics depend on structural characteristics of the material.

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8.
dx.doi.org/ 10.18577/2307-6046-2020-0-11-68-75
УДК 669.018.95
Zhabin A.N., Nyafkin A.N., Serpova V.M., Krasnov E.I.
Methods of physical vapor deposition for the manufacture of metal matrix composites (review)

A review of the scientific and technical literature in the field of the most used methods of physical vapor deposition for the manufacture of metal matrix composites (MMCs) reinforced silicon carbide fibers is presented. The most widespread methods of solid-phase technology for the manufacture of MMCs are briefly considered, and methods of electron-beam deposition and magnetron sputtering of a matrix titanium alloy on silicon carbide fibers are discussed in detail. The morphological structure of the surface of the deposited matrix alloy on fibers, obtained by different methods, is investigated.

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9.
dx.doi.org/ 10.18577/2307-6046-2020-0-11-76-92
УДК 678.84
Shestakov A.M.
Ceramics based on organosilicon polymers-precursors: methods of preparation and properties (review)

The main types of preceramic organosilicon polymers, general methods of their synthesis and physical, and chemical properties are considered. Methods of shaping, curing and pyrolysis of polymers and the influence of process parameters on the composition, structure and properties of ceramics are described. Separately, the work considers modifying fillers for preceramic polymers, the goals and methods of their introduction into the polymer, the features of processing the compositions and the properties of the products obtained.

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10.
dx.doi.org/ 10.18577/2307-6046-2020-0-11-93-101
УДК 678.747.2
Dyshenko V.S., Minibaev M.I., Usacheva M.N.
Creating holes in sound-absorbing structures during molding

Monolithic samples are made of carbon fiber based on fabrics that are cured by infusion. Perforation is carried out on a CNC milling machine after confirmation and on special equipment until confirmation. Samples are cut from the plate at an angle of 4–5°, as the orientation of the holes in real sound-absorbing structures. Samples tested for tensile strength according to GOST 56785–2015. Samples cut from plates made by molding give 25% higher results than samples obtained by processing on a CNC machine.

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11.
dx.doi.org/ 10.18577/2307-6046-2020-0-11-102-112
УДК 66.017
Kuzin Ya.S., Kozlov I.A., Sibileva S.V., Fomina M.A.
Investigation of the influence of component composition of PEO electrolytes on their stability and coating properties

The efficiency of various variants of the component composition of alkaline electrolytes of plasma electrolytic oxidation (PEO) was studied. Technical liquid glass, NaOH, Na2B4O7, Na3PO4, and NaAlO2 were used as components of aqueous solutions. All of the studied components of electrolytes are the most common for use in PEO processes of aluminum alloys. The influence of the component composition of electrolytes on their stability during 30 days of exposure was evaluated, and the most stable compositions were selected. The structure and properties of coatings formed on samples of aluminum alloy AK6 during PEO are studied. The dependences of the hardness of coatings and their growth rate on the composition of the electrolyte are established. Possible variants of coating growth in the PEO process with different component composition of electrolytes are proposed.

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12.
dx.doi.org/ 10.18577/2307-6046-2020-0-11-113-121
УДК 66.017
Dobrynin D.A., Iatsyuk I.V., Doronin O.N.
Removal of hardening coatings based on titanium nitride and zirconium nitride from the surface of parts made of titanium alloys

Рrovides an overview of the methods of chemical and electrochemical removal of hardening coatings based on titanium nitride (TiN) and zirconium nitride (ZrN) from the surface of parts made of various materials that can be used to remove defective and waste coatings from the surface of compressor blades and other parts of gas turbine engines (GTE) from titanium alloys. The main disadvantages of the described methods are shown in relation to the removal of hardening coatings from the surface of compressor blades and other GTE parts made of titanium alloys. Taking into account the shortcomings of the available methods, FSUE «VIAM» has developed effective methods for chemical removal of hardening coatings based on titanium nitride and zirconium nitride from the surface of parts made of titanium alloys, and recommendations are given for controlling the completeness of removal of coatings.

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