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dx.doi.org/ 10.18577/2307-6046-2018-0-1-1-1

УДК 669.018.95

Bondarenko Yu.A., Kolodiazniy M.Yu., Echin A.B., Narskiy A.R.

DIRECTIONAL SOLIDIFICATION, STRUCTURE AND PROPERTIES OF NATURAL COMPOSITE BASED ON EUTECTIC Nb–Si AT WORKING TEMPERATURES UP TO 1350°С DEGREES FOR THE BLADES OF GAS TURBINE ENGINE

Investigated the structure and properties of niobium-silicon composite, obtained by directional solidification in the liquid metal cooling method (LMC). Considered natural-the composite microstructure of the ingot after directional solidification, the analysis of the composition of the phases of the composite Nb–Si we determined the level of short-term strength at 20, 1200 and 1350°C and long-term strength at 1200°C. The level of strength at high temperatures a natural composite of Nb–Si is more than two times that of single-crystal nickel superalloys.

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Reference list

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dx.doi.org/ 10.18577/2307-6046-2018-0-1-2-2

УДК 669.017

Kuzmina N.A., Marchenko E.I., Eremin N.N., Yakushev D.A.

THE STUDY OF DEFECTS INTRODUCTION IN POLYMORPHIC MODIFICATIONS OF NIOBIUM SILICIDE Nb5Si3 BY THE METHODS OF ATOMISTIC COMPUTER SIMULATION

Methods atomistic computer simulations we study the geometry of the environment of impurity atoms of carbon in the crystal structures of α-, β- and γ-Nb5Si3 modifications. The calculated energy structure of the silicides with different concentrations of the element implementation of carbon for α-, β- and γ-Nb5Si3 modifications. Calculated the effect of different concentrations of impurities on the parameters of the structure. On the basis of calculated values of energy and structure parameters estimation of the solubility limit of carbon in these silicides.

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Reference list

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dx.doi.org/ 10.18577/2307-6046-2018-0-1-3-3

УДК 543.51; 669.1

Alekseev A.V., Rastegayeva G.Yu., Pahomkina T.N.

EXPERIENCE OF THE DETERMINATION OF CARBON, SULFUR, OXYGEN AND NITROGEN IN ALLOYS BASED ON NIOBIUM ON THE GAS-ANALYZERS OF THE LECO FIRM

A study was made of the possibility of determining the mass fraction of carbon and sulfur in an alloy based on Nb by burning in an induction furnace a gas analyzer CS-444 from Leco, followed by detection in an infrared cell of a spectrometer. A catalyst is selected, with a specially selected composition, which allows full recovery of carbon and sulfur from the analyzed material. Determination of the content of the oxygen and nitrogen mass fraction in the Nb-based alloy was carried out by reductive melting in a stream of an inert carrier gas, followed by detection of oxygen in an infrared cell and nitrogen in a conductometric cell of a TC-600 from Leco gas analyzer. The catalysts required for the complete extraction of these elements from an Nb-based alloy were selected

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Reference list

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dx.doi.org/ 10.18577/2307-6046-2018-0-1-4-4

УДК 546.65

Sevastyanov D.V., Doriomedov M.S., Sutubalov I.V., Kulagina G.S.

DIRECTIONS FOR THE DEVELOPMENT OF MANUFACTURING TECHNOLOGIES IN THE FIELD OF RARE EARTH METALS

Based on the analysis of scientific and technical literature, the main trends in the development of manufacturing technologies in the field of rare-earth metals were revealed. These trends include recovery of rare earths from end-of-life products (fluorescent lamps, permanent magnets, Ni-MH batteries) and industrial waste as well as production of high-purity rare earth metals. The special features of the applied technologies and the further development of technological solutions in this area were presented.

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Reference list

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7. Method for recovering rare-earth elements from a solid mixture containing a halophosphate and a compound of one or more rare earth elements: pat. US8501124B2; publ. 06.08.13.
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17. Cheng W., Li Z., Chen D. et al. Preparation of high purity lanthanum by combined method of
lithium-thermal reduction and vacuum distillation // Chinese Journal of Rare Metals. 2011. Vol. 35. P. 781–785.
18. Novel method for utilizing hydrogen plasma electric arc melting technology to prepare high-purity rare earth gadolinium elementary substance: pat. CN10340650B; publ. 12.11.14.
19. Li G., Guo H., Li L. et al. Purification of terbium by means of argon and hydrogen plasma arc melting // Journal of Alloys and Compounds. 2016. Vol. 659. Р. 1–7.
20. Li G., Li L., Yang C. et al. Removal of gaseous impurities from terbium by hydrogen plasma arc melting // International Journal of Hydrogen Energy. 2015. Vol. 40. No. 25. P. 7943–7948.
21. Maslov V.P., Polyakov E.G., Polyakova L.P., Stangrit P.T. Elektroliticheskoe nanesenie pokrytij i elektrorafinirovanie redkih metallov v solevyh rasplavah [Electrolytic drawing coverings and electrorefinement of rare metals in salt melt] // Cvetnye metally. 2000. №10. S. 66–70.

dx.doi.org/ 10.18577/2307-6046-2018-0-1-5-5

УДК 669.721.5

Volkova E.F., Mostyaev I.V., Akinina M.V.

COMPARATIVE RESEARCHES OF PHASE COMPOSITION INFLUENCE ON MECHANICAL AND TECHNOLOGICAL PROPERTIES OF MA20-SP AND MA2-1 MAGNESIUM ALLOYS

The paper presents the comparative investigation results of phase composition influence of new economically alloying MA20-SP alloy and commercial MA2-1 alloy on their based properties under room and elevated temperatures. It was found out the parameters of bending and deep drawing of sheets. It was showed, that alloying MA20-SP alloy by zirconium and cerium (0,25–0,30 mass %) promotes the forming of high dispersed hardening precipitates of phases, the emergence of uniaxial and refine structure and helps to achieve the higher level of mechanical and technological properties in comparison with MA2-1 alloy.

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Reference list

1. Kablov E.N. Innovacionnye razrabotki FGUP «VIAM» GNC RF po realizacii «Strategicheskih napravlenij razvitiya materialov i tehnologij ih pererabotki na period do 2030 goda» [Innovative developments of FSUE «VIAM» SSC of RF on realization of «Strategic directions of the development of materials and technologies of their processing for the period until 2030»] // Aviacionnye materialy i tehnologii. 2015. №1 (34). S. 3–33. DOI: 10.18577/2071-9140-2015-0-1-3-33.
2. Antipov V.V. Strategiya razvitiya titanovyh, magnievyh, berillievyh i alyuminievyh splavov [Strategy of development of titanium, magnesium, beryllium and aluminum alloys] // Aviacionnye materialy i tehnologii. 2012. №S. S. 157–167.
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4. Volkova E.F., Duyunova V.A. O sovremennyh tendenciyah razvitiya magnievyh splavov [About current trends of development of magnesium alloys] // Tehnologiya legkih splavov. 2016. №3. S. 94–105.
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7. Dobatkin S.V., Rohlin L.L., Dobatkina T.I. Issledovanie magnievyh splavov sistemy
Mg–Sm–Y, podvergnutyh intensivnoj plasticheskoj deformacii i posleduyushhej termicheskoj obrabotke [Research of magnesium alloys of system Mg–Sm–Y subjected to intensive plastic strain and the subsequent thermal processing] // Metally. 2011. №4. S. 32–37.
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11. Luyao Jiang, Dingfei Zhang, Xiaowei Fan. et al. Influence of 0-2 wt.% Sn addition on the microstructure and mechanical properties of extruded AZ80 alloy // Proceedings of the 10th International Conference on Magnesium Alloys and Their Applications (Mg–2015). P. 128–136.
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13. Watanabe H., Mukai T., Higashi K. Grain refinement in superplasticity in magnesium alloys // Ultrafine Grained Materials II.TMS, Warrendale, PA, 2002. P. 469–476.
14. Sharon J.A., Zhang Y., Mompiou F., Legros M., Hemker K.J. Discerning size effect strengthening in ultrafine grained Mg thin films // Scripta Mater. 2014. Vol. 75. P. 10–13.
15. Lashko N.F., Zaslavskaya L.V., Kozlova M.N. i dr. Fiziko-himicheskij fazovyj analiz stalej i splavov [Physical and chemical phase analysis staly and alloys]. M.: Metallurgiya, 1978. 336 s.
16. Emli E.F. Osnovy tehnologii proizvodstva i obrabotki magnievyh splavov [Bases of the production technology and processing of magnesium alloys]. M.: Metallurgiya, 1972. S. 203–204.
17. Magnievye splavy: spravochnik / pod red. M.B. Altmana, M.E. Drica, M.A. Timonova i dr. [Magnesium alloys: the directory / ed. by M.B. Altman, M.E.Drits, Timonov and dr.]. M.: Metallurgiya, 1978. T. I. S. 116–118.

dx.doi.org/ 10.18577/2307-6046-2018-0-1-6-6

УДК 669.295

Nochovnaya N.A., Shiryaev A.A., Dzunovich D.А., Panin P.V.

STUDY OF CHEMICAL COMPOSITION OF LARGE-DIMENSIONED EXPERIMENTAL-INDUSTRIAL INGOT FROM A NEW HIGH-ALLOYED METASTABLE β-TITANIUM ALLOY VT47

Chemical composition studies have been carried out for a large-dimensioned experimental-industrial 1,5 tons ingot from high-alloyed high-strength metastable β-titanium alloy VT47, the ingot having been obtained by threefold vacuum-arc remelting in PSC «VSMPO-AVISMA Corporation». A comparative analysis has been completed for the results of 30 kg laboratory ingots investigation (obtained by VIAM experimental production) and those for the large-dimensioned ingot in order to evaluate the scale factor influence on quality characteristics of VT47 ingots. The possible ways of further metallurgical quality increase have been proposed for large-dimensioned industrial ingots from VT47 alloy.

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Reference list

1. Boyer R.R., Briggs R.D. The Use of β Titanium Alloys in the Aerospace Industry // Journal of Materials Engineering and Performance. 2005. Vol. 14 (6). P. 681–685.
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4. Kablov D.E., Panin P.V., Shiryaev A.A., Nochovnaya N.A. Opyt ispolzovaniya vakuumno-dugovoj pechi ALD VAR L200 dlya vyplavki slitkov zharoprochnyh splavov na osnove aljuminidov titana [The use of ADL VAR L200 vacuum-arc furnace for ingots fabrication of high-temperature titanium aluminides base alloys] //Aviacionnye materialy i tehnologii. 2014. №2. S. 27–33. DOI: 10.18577/2071-9140-2014-0-2-27-33.
5. Kablov E.N. Strategicheskie napravleniya razvitiya materialov i tehnologij ih pererabotki na period do 2030 goda [The strategic directions of development of materials and technologies of their processing for the period to 2030] // Aviacionnye materialy i tehnologii. 2012. №S. S. 7–17.
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12. Khorev A.I. Alloying titanium alloys with rare-earth metals // Russian Engineering Research. 2011. Vol. 31. No. 11. P. 1087–1094.
13. Yu-Yong Chen, Yu-Feng Si, Fan-Tao Kong et al. Effects of yttrium on microstructures and properties of Ti–17Al–27Nb alloy // Transactions of Nonferrous Metals Society of China. 2006. Vol. 16. No. 2. P. 316–320.
14. Skupov A.A., Panteleev M.D., Ioda E.N., Movenko D.A. Effektivnost primeneniya redkozemelnyh metallov dlya legirovaniya prisadochnyh materialov [The efficiency of rare earth metals for filler materials alloying] // Aviacionnye materialy i tehnologii. 2017. №3 (48). S. 14–19. DOI: 10.18577/2071-9140-2017-0-3-14-19.
15. Horev A.I., Muhina L.G., Zhegina I.P. Vliyanie redkozemelnyh elementov na svojstva titanovyh splavov [Influence of rare earth elements on properties of titanium alloys] // Legirovanie i termicheskaya obrabotka titanovyh splavov. M.: VIAM, 1977. S. 106–113.
16. Kyosuke Ueda, Shinichiro Nakaoka, Takayuki Narushima. β-Grain Refinement of α+β-Type Ti–4,5Al–6Nb–2Fe–2Mo Alloy by Using Rare-Earth-Oxide Precipitates // Materials Transactions. 2013. Vol. 54 (2). P. 161–168.

dx.doi.org/ 10.18577/2307-6046-2018-0-1-7-7

УДК 669.295:621.78

Dzunovich D.А., Panin P.V., Lukinа E.A., Shiryaev A.A.

HEAT TREATMENT EFFECT ON STRUCTURE AND PROPERTIES OF WELDED LARGE-DIMENSIONED SEMI-FINISHED PRODUCTS FROM VT23 TITANIUM ALLOY

The effect of heating temperature and cooling rate on phase composition, structure, and hardness has been studied for bulk metal and weld joint as well as the hereinbefore mentioned parameters influence on bulk metal mechanical properties for a 80 mm thickness plate of VT23 (Ti–5,5Al–2Mo–4,5V–1Cr–0,6Fe, wt.%) titanium alloy. It has been shown, that two-step heat treatment including annealing at a temperature 100–130С lower than polymorphic transformation temperature with a subsequent air cooling and ageing at 625С gives the opportunity both to form a homogeneous structure along the weld joint section and to obtain bulk metal tensile strength higher than 1100 MPa wherein impact toughness is more than 0,3 MJ/m2.

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Reference list

1. Kablov E.N. Iz chego sdelat budushhee? Materialy novogo pokoleniya, tehnologii ih soz-daniya i pererabotki – osnova innovacij [Of what to make the future? Materials of new generation, technology of their creation and processing – basis of innovations ] // Krylya Rodiny. 2016. №5. S. 8–18.
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6. Kablov E.N. Materialy i himicheskie tehnologii dlya aviacionnoj tehniki [Materials and chemical technologies for aviation engineering ] // Vestnik Rossijskoj akademii nauk. 2012. T. 82. №6. S. 520–530.
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12. Kollerov M.Yu., Il'in A.A., Filatov A.A., Mamaev V.S. Uprochnyayushhaya termicheskaya obrabotka krupnogabaritnyh polufabrikatov i izdelij iz vysokoprochnyh titanovyh splavov [Strengthening thermal processing of large-size semi-finished products and products from high-strength titanium alloys] // Metallovedenie i termicheskaya obrabotka metallov. 2002. №5. S. 14–17.
13. Nochovnaya N.A., Panin P.V. Analiz ostatochnyh makronapryazhenij v svarnyh soedineniyah titanovyh splavov raznyh klassov [Residual Macrostress Analysis in Welded Junctions of Different Titanium Alloys] // Trudy VIAM: elektron. nauch.-tehnich. zhurn. 2014. №5. St. 02. Available at: http://www.viam-works.ru. (accessed: November 28, 2017). DOI: 10.18577/2307-6046-2014-0-5-2-2.
14. Ilin A.A., Skvorcova S.V., Popova Yu.A., Kudelina I.M. Vliyanie termicheskoj obrabotki na formirovanie struktury i svojstv krupnogabaritnyh polufabrikatov iz splava VT23 [Influence of thermal processing on forming of structure and properties of large-size semi-finished products from alloy ВТ23] // Titan. 2010. №4. S. 48–53.
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16. Kablov E.N. Innovacionnye razrabotki FGUP «VIAM» GNC RF po realizacii «Strategicheskih napravlenij razvitiya materialov i tehnologij ih pererabotki na period do 2030 goda» [Innovative developments of FSUE «VIAM» SSC of RF on realization of «Strategic directions of the development of materials and technologies of their processing for the period until 2030»] // Aviacionnye materialy i tehnologii. 2015. №1 (34). S. 3–33. DOI: 10.18577/2071-9140-2015-0-1-3-33.
17. Kablov E.N. Materialy novogo pokoleniya – osnova innovacij, tehnologicheskogo liderstva i nacionalnoj bezopasnosti Rossii [Materials of new generation – basis of innovations, technological leadership and national security of Russia] // Intellekt i tehnologii. 2016. №2 (14). S. 16–21.
18. Moiseev V.N., Kulikov F.R., Kirillov Yu.G., Vaskin Yu.V. Svarnye soedineniya titanovyh splavov (struktura i svojstva) [Welded compounds of titanium alloys (structure and properties)]. M.: Metallurgiya, 1979. 248 s.
19. Novikov I.I. Teoriya termicheskoj obrabotki metallov: uchebnik dlya vuzov. 3-e izd., ispr. i dop. [Theory of thermal processing of metals: the textbook for higher education institutions. 3rd ed., rev. and add.] M.: Metallurgiya, 1978. 392 s.

dx.doi.org/ 10.18577/2307-6046-2018-0-1-8-8

УДК 678.8

Alifanov E.V., Chaykun A.М., Gorlov D.S., Venediktova M.A.

FEATURES OF THE MECHANISM OF FRICTION OF ELASTOMERIC MATERIALS OF DIFFERENT TYPES. THEORETICAL AND PRACTICAL ASPECTS (review)

The overview is devoted to the analysis of the mechanism of friction of elastomeric materials. Products from them are in large quantities applied as accessories in products of aviation engineering. Theoretical and practical aspects of friction and wear of polymeric materials including elastomer features of application of lubricant and its influence on character of friction and wear of elastomer Are shown are analyzed. Features of the mechanism of friction of elastomeric materials of different classes are given. Modern development of VIAM Federal State Unitary Enterprise in the field of nonskid polymer coatings for aviation application is shown. Are noted their basic components and defined their technical characteristics.

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Reference list

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3. Kablov E.N. Innovacionnye razrabotki FGUP «VIAM» GNC RF po realizacii «Strategicheskih napravlenij razvitiya materialov i tehnologij ih pererabotki na period do 2030 goda» [Innovative developments of FSUE «VIAM» SSC of RF on realization of «Strategic directions of the development of materials and technologies of their processing for the period until 2030»] // Aviacionnye materialy i tehnologii. 2015. №1 (34). S. 3–33. DOI: 10.18577/2071-9140-2015-0-1-3-33.
4. Kablov E.N. Himiya v aviacionnom materialovedenii [Chemistry in aviation materials science] // Rossijskij himicheskij zhurnal. 2010. T. LIV. №1. S. 3–4.
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6. Kablov E.N. Materialy dlya aviakosmicheskoj tehniki [Materials for aerospace equipment ] // Vse materialy. Enciklopedicheskij spravochnik. 2007. №5. S. 7–27.
7. Kablov E.N. Iz chego sdelat budushhee? Materialy novogo pokoleniya, tehnologii ih sozdaniya i pererabotki – osnova innovacij [Of what to make the future? Materials of new generation, technology of their creation and processing – basis of innovations] // Krylya Rodiny. 2016. №5. S. 8–18.
8. Shajdakov V.V. Svojstva i ispytanie rezin [Properties and testing of rubbers]. M.: Himiya, 2002. 231 s.
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11. Krylov V.D., Yakovlev N.O., Kurganova Yu.A., Lashov O.A. Mezhsloevaya treshchinostoikost konstruktsionnykh polimernykh kompozitsionnykh materialov [Mezhsloyevy crack firmness of constructional polymeric composite materials] // Aviacionnye materialy i tehnologii. 2016. №1 (40). S. 79–85. DOI: 10.18577/2071-9140-2016-0-1-79-85.
12. Murashov V.V. Ocenka stepeni nakopleniya mikropovrezhdenij struktury PKM v detalyah i konstrukciyah nerazrushayushhimi metodami [Assessment of accumulation degree of microdamages of PCM structure in structures determined by nondestructive methods] // Aviacionnye materialy i tehnologii. 2016. №3 (42). S. 73–81. DOI: 10.18577/2071-9140-2016-0-3-73-81.
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14. Slovar-spravochnik po treniyu, iznosu i smazke detalej mashin [The dictionary reference on friction, wear and lubricant of details of machines]. Kiev: Naukova dumka, 1979. 188 s.
15. Bulgin D., Hubbard G.D., Walters M.H. Road and laboratory studies of friction of elastomers // Rubber technology conference. London, 1962. P. 173–188.
16. Kummer H.W., Meyer W.E. New theory permits better frictional coupling between tire and rout // Automobile congress. Munich, 1966. Paper №B11.
17. Denny D.F. The influence of load surface roughness on the friction of rubber-like materials // Proceeding of the Royal Society. 1953. Vol. 66. P. 386.
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19. Chaikun A.M., Naumov I.S., Alifanov E.V. Rezinovye uplotnitelnye materialy (obzor) [Rubber sealing materials (review)] // Trudy VIAM: elektron. nauch.-tekhnich. zhurn. 2017. №1 (49). St. 12. Available at: http //www.viam-works.ru (accessed: December 04, 2017). DOI: 10.18577/2307-6046-2017-0-1-12-12.
20. Mashinostroitelnyj gidroprivod / pod red. V.N. Prokofeva [Machine-building hydraulic actuator / ed. by V.N. Prokofev]. M.: Mashinostroenie, 1978. 495 s.
21. Evzovich V.E., Rajbman P.G. Avtomobilnye shiny i kolesa. Naznachenie, ekspluataciya. 2-e izd. [Automobile tires and wheels. Assignment, operation. 2nd ed.]. M.: MIROS, 2012. 160 s.

dx.doi.org/ 10.18577/2307-6046-2018-0-1-9-9

УДК 620.1:621.792

Bryk Ya. А., Smirnov D.N.

RESEARCH OF FROST RESISTANCE OF AERONAUTICAL SEALANTS

The principles of creating frost-resistant sealing materials are considered. The influence of components (fillers, plasticizers and crosslinking agents) on the frost resistance of sealants was investigated. Two methods for evaluating the frost resistance of sealants have been studied: the determination of the strength and elongation of the material at a negative temperature, the determination of the dynamic shear modulus G and the tangent of the mechanical loss angle tgδ in the negative temperature region. The article presents data on glass transition temperatures of sealing materials, as well as temperature dependences of the dynamic mechanical characteristics of sealants, depending on their polymer base. It is shown that the frost resistance of sealants is an ambiguous concept, since the operability of the material in a structure depends not only on its properties, but also on the characteristics of hermetic joints and the conditions of their operation.

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Reference list

1. Kablov E.N. Iz chego sdelat budushhee? Materialy novogo pokoleniya, tehnologii ih sozdaniya i pererabotki – osnova innovacij [Of what to make the future? Materials of new generation, technology of their creation and processing – basis of innovations] // Krylya Rodiny. 2016. №5. S. 8–18.
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16. Zajceva E.I., Chursova L.V., Smirnov D.N. Perspektivy snizheniya plotnosti polisulfidnyh germetikov [Perspectives of decrease in density of polysulphide hermetics] // Klei. Germetiki. Tehnologii. 2012. №5. S. 10–14.
17. Bryk Ya.A., Eliseev O.A., Smirnov D.N. Zashhita ot korrozii magnievyh splavov polisulfidnymi germetikami [Corrosion protection of magnesium alloys polysulphide sealants] // Trudy VIAM: elektron. nauch.-tehnich. zhurn. 2017. №10. St. 10. Available at: http://www.viam-works.ru (accessed: Desember 08, 2017). DOI: 10.18577/2307-6046-2017-0-10-10-10.
18. Petrova A.P., Donskoj A.A. Kleyashhie materialy, germetiki: spravochnik [Gluing materials, hermetics: directory]. SPb.: Professional, 2008. S. 503–567.
19. Eliseev O.A., Krasnov L.L., Zajceva E.I., Savenkova A.V. Razrabotka i modificirovanie elastomernyh materialov dlya primeneniya vo vseklimaticheskih usloviyah [Development and modifying of elastomeric materials for application in all weather conditions] // Aviacionnye materialy i tehnologii. 2012. №S. S. 309–314

10.

dx.doi.org/ 10.18577/2307-6046-2018-0-1-10-10

УДК 62-758.34

Kraev I.D., Sorokin A.E., Nyrtsov A.V., Shipin N.O., Krayeva A.A., Titkova Yu.M.

FOAMS DESIGNED TO ENSURE THE ABSORPTION OF ACOUSTIC WAVES OVER A WIDE RANGE OF FREQUENCIES

Various porous materials with sound-absorbing properties are considered. The classification of porous materials according to their structural features is given, their purposes are considered. The main attention is paid to porous-cellular materials (foams), among which polyurethane foams are widely used. The results of research work aimed at obtaining new foams and porous composite materials providing effective absorption of acoustic waves over a wide frequency range are presented. Depending on the component composition and concentration of the filler, samples of filled and unfilled polyurethane foams with different structural parameters and performance characteristics were obtained. The influence of the porosity of the foam on the acoustic properties of materials is revealed, the possibility of placing a porous fiber layer inside the foam volume is shown. Prospective foams were considered capable of maintaining performance at elevated tempe-ratures, and the effect of melamine and its

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Reference list

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9. Kablov E.N. Innovacionnye razrabotki FGUP «VIAM» GNC RF po realizacii «Strategicheskih napravlenij razvitiya materialov i tehnologij ih pererabotki na period do 2030 goda» [Innovative developments of FSUE «VIAM» SSC of RF on realization of «Strategic directions of the development of materials and technologies of their processing for the period until 2030»] // Aviacionnye materialy i tehnologii. 2015. №1 (34). S. 3–33. DOI: 10.18577/2071-9140-2015-0-1-3-33.
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pat. US 9023905 B2; publ. 05.05.15.

11.

dx.doi.org/ 10.18577/2307-6046-2018-0-1-11-11

УДК 629.7.023.224

Solntsev St.S., Denisova V.S., Agarkov A.B., Gavrilov S.V.

THE INFLUENCE OF BaO–Al2O3–SiO2-GLASSES ADDITION ON REACTION-CURED COATINGS PROPERTIES FOR NICKEL ALLOYS PROTECTION

The results of heat-resisant coatings containing the additives of refractory glasses in BaO–Al2O3–SiO2 system are explained. The optimal technological parameters of refractory glasses are estimated, and that was found that the additive of 25% BaO–25% Al2O3–50% SiO2 provides the increase of heat resistance and thermal stability. The compositions of reaction cured coatings provide solid gas-proof non-defective coatings designed to heat-resistant nickel alloys protection at temperatures up to 1250°C.

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Reference list

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12.

dx.doi.org/ 10.18577/2307-6046-2018-0-1-12-12

УДК 66.017

Onuchina M.R., Artamonov A.A., Evdokimov V.B.

STUDY OF THE LATTICE DYNAMICS OF B2 RuAl BY THE FIRST PRINCIPLES METHODS

The first-principle methods were used, the phonon spectrum and the density of the phonon states of B2 RuAl are studied. We used the phonon spectrum of RuAl for calculation: the Grüneisen constant, the volume coefficient of thermal expansion, the Debye temperature, the temperature dependence of the heat capacity, the melting temperature is estimated for RuAl. The bulk modulus of elasticity, the equilibrium values of lattice parameters for RuAl are calculated. It is shown that the calculated data agree well with the experimental data. The calculated parameters are compared with those for the NiAl superalloy.

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Reference list

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16. Kablov E.N. Innovacionnye razrabotki FGUP «VIAM» GNC RF po realizacii «Strategicheskih napravlenij razvitiya materialov i tehnologij ih pererabotki na period do 2030 goda» [Innovative developments of FSUE «VIAM» SSC of RF on realization of «Strategic directions of the development of materials and technologies of their processing for the period until 2030»] // Aviacionnye materialy i tehnologii. 2015. №1 (34). S. 3–33. DOI: 10.18577/2071-9140-2015-0-1-3-33.
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