Source: http://viam-works.ru/en/articles?year=2015&num=3
Timestamp: 2019-04-22 07:02:02+00:00

Document:
Gerasimov V. V., Petrushin N.V., Visik E.M.
CAD was used to improve chemical composition of single crystal intermetallic Ni-based superalloy with crystallographic orientation (CGO) providing an attractive combination of operation properties: density – 8,0 g/cm3; long-term strength – 130 MPa at 1100°C and =53 MPa at 1200°C and σ-1 =370 MPa at 900°C on the base of 2·107 cycles. The process parameters for casting of uncooled single crystal small-sized rotor blades of GTE with CGO from the above alloy were developed. Experimental lots of uncooled small-sized rotor blades were produced with the single crystal structure yield at least 95% under conditions of pilot production at VIAM and 80% - under industrial conditions.
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Kashapov O.S., Pavlova T.V., Istrakova A.R., Kalashnikov V.S.
The paper describes the studies focused on structure and mechanical properties of bars made from heat-resistant near-α-titanium alloy VТ41 with different iron contents. It was established that an increase in Fe content leads to modification of microstructure, an increase in strength and fatigue characteristics of the material and to a decrease in ductility characteristics, fracture toughness and heat resistance. In addition, rising of Fe content is accompanied by an increase of sensitivity to stress concentrators at different types of tests.
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Panin P.V., Dzunovich D.А., Alexeev E.B.
Various types of biaxial diagrams used for phase areas representation in titanium alloys with additionally doped with hydrogen have been reviewed both for hydrogenated state and after vacuum annealing. It has been shown that only temperature-concentration phase diagrams describe properly the high-temperature phase equilibria in «Ti-alloy–hydrogen» system. Other diagrams such as «hydrogen content–temperature of hydrogenation», «hydrogen content–cooling rate» and diagrams for quenched and annealed alloys represent phase composition at room temperature.
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Mechanical properties of heat-resistant (α+β) titanium alloys and pseudo-α-titanium alloys VT18U, VT41, VT8, VT8M-1 were investigated depending on loading conditions. The tension test of specimens with different loading rates at 20°С and maximal working temperatures were made for each alloy with the use of TIRA-test 2300/1 testing machine. It was found out that sensibility of heat-resistant titanium alloys to the loading rate varies depending on the alloying level.
2. Tarasov Ju.M., Antipov V.V. Novye materialy VIAM – dlja perspektivnoj aviacionnoj tehniki proizvodstva OAO «OAK» [New materials VIAM - for promising aviation equipment produced by JSC «UAC»] //Aviacionnye materialy i tehnologii. 2012. №2. S. 5–6.
3. Shmotin Ju.N., Starkov R.Ju., Danilov D.V., Ospennikova O.G., Lomberg B.S. Novye materialy dlja perspektivnogo dvigatelja OAO «NPO “Saturn”» [New materials for advanced engine JSC «NPO „Saturn”»] //Aviacionnye materialy i tehnologii. 2012. №2. S. 6–8.
4. Kashapov O.S., Pavlova T.V., Nochovnaja N.A. Vlijanie rezhimov termicheskoj obrabotki na strukturu i svojstva zharoprochnogo titanovogo splava dlja lopatok KVD [Effect of heat treatment on the structure and properties of heat-resistant titanium alloy blades for HPC] //Aviacionnye materialy i tehnologii. 2010. №2. S. 8–14.
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8. Kablov E.N. Materialy dlja izdelija «Buran» – innovacionnye reshenija formirovanija shestogo tehnologicheskogo uklada [Materials for the product «Buran» – innovative solutions forming the sixth technological order] //Aviacionnye materialy i tehnologii. 2013. №S1. S. 3–9.
9. Kashapov O.S., Novak A.V., Nochovnaja N.A., Pavlova T.V. Sostojanie, problemy i per-spektivy sozdanija zharoprochnyh titanovyh splavov dlja detalej GTD [Status, problems and prospects of creating heat-resistant titanium alloys for GTE parts] //Trudy VIAM. 2013. №3. St. 02 (viam-works.ru).
10. Horev A.I., Belov S.P., Glazunov S.G. Metallovedenie titana i ego splavov [Physical metallurgy of titanium and its alloys]. M.: Metallurgija. 1992. 352 s.
11. Sposob termicheskoj obrabotki vysokoprochnyh (α+β)-titanovyh splavov [A method of heat treatment of high (α+β) alloy titanic]: pat. 2465366 Ros. Federacija; opubl. 15.09.2011.
12. Sposob termomehanicheskoj obrabotki izdelij iz titanovyh splavov [Method of thermome-chanical processing of titanium alloys]: pat. 2457273 Ros. Federacija; opubl. 05.04.2011.
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Berezovsky V.V., Bazaleeva O.K., Kalashnikov V.S.
A temperature dependence of the electrical resistivity of commercially pure titanium after severe plastic deformation was shown as a function of temperature within the range of -100/+100°С. A temperature dependence of electrical resistivity of commercially pure titanium in annealed state was offered as a measurement control technique.
1. Kablov E.N. Strategicheskie napravlenii razvitija materialov i tehnologij ih pererabotki na period do 2030 goda [Strategic directions of development of materials and technologies to process them for the period up to 2030] //Aviacionnye materialy i tehnologii. 2012. №S. C. 7–17.
2. Kablov E.N., Shhetanov B.V., Grashhenkov D.V. i dr. Metallomatrichnye kompozicionnye mate-rialy na osnove Al‒SiC [Metal matrix composites based on Al–SiC] //Aviacionnye materialy i tehnologii. 2012. №S. S. 373–380.
3. Kablov E.N. Aviakosmicheskoe materialovedenie [Aerospace materials] //Vse materialy. Jenciklopedicheskij spravochnik. 2008. №3. S. 2–14.
4. Krasnov E.I., Shtejnberg A.S., Shavnev A.A., Berezovskij V.V. Issledovanie sloistogo metallicheskogo kompozicionnogo materiala sistemy Ti–TiAl3 [Investigation metal laminate composite systems Ti–TiAl3] //Aviacionnye materialy i tehnologii. 2013. №3. S. 16–19.
5. Grinevich A.V., Lucenko A.N., Karimova S.A. Raschetnye harakteristiki metallicheskih materialov s uchetom vlazhnosti [Design characteristics of metallic materials with the humidity] //Trudy VIAM. 2014. №7. Ct. 10 (viam-works.ru).
6. Kablov E.N., Grashhenkov D.V., Shhetanov B.V. i dr. Metallicheskie kompozicionnye materialy na osnove Al–SiC dlja silovoj jelektroniki [Metal composite materials on the basis of Al–SiC power electronics] //Mehanika kompozicionnyh materialov i konstrukcij. 2012. T. 2. №3. S. 359–368.
7. Grishina O.I., Kochetov V.N., Shavnev A.A., Serpova V.M. Aspekty primenenija vysokoproch-nyh i vysokomodul'nyh voloknistyh metallicheskih kompozicionnyh materialov aviacionnogo naznachenija (obzor) [Aspects of the use of high-strength and high-fiber metal composites aviation applications (review)] //Trudy VIAM. 2014. №10. St. 05 (viam-works.ru).
8. Milejko S.T. Kompozity i nanostruktury [Composites and nanostructures] //Kompozity i nanostruktury. 2009. №1. S. 6–37.
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10. Kurzina I.A., Kozlov Je.V., Sharkeev Ju.P. i dr. Nanokristallicheskie intermetallidnye i nitridnye struktury, formirujushhiesja pri ionno-plazmennom vozdejstvii [Nanocrystalline intermetallic and nitride structures, which are formed in ion-plasma exposure]. Tomsk: Izd-vo NTL. 2008. 324 s.
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12. Eroshenko A.Ju., Sharkeev Ju.P., Tolmachev A.I. i dr. Struktura i svojstva ob#emnogo ul'tramelkozernistogo titana, poluchennogo abc-pressovaniem i prokatkoj [The structure and properties of bulk ultrafine titanium obtained abc-pressing and rolling] //Perspektivnye materialy. 2009. №7. S. 107–112.
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15. Kablov E.N., Grashchenkov D.V., Isaeva N.V., Solntsev S.St. Perspective high-temperature ceramic composite materials //Russian Journal of General Chemistry. 2011. V. 81. №5. S. 986–991.
Gusev Y.A., Borshchev A.V., Khrulkov A.V.
Automated laying made by ATL and AFP methods is used worldwide to increase productivity and accuracy of prepregs laying in the course of manufacture of large-sized PCM-based parts. However, conventional prepregs are not always suitable for processing by these methods – they have to meet special requirements in terms of delivery form, quality and processability. Some features of prepregs intended for automated laying, requirements to them and an influence of laying parameters on their technological properties are discussed in the article.
2. Muhametov R.R., Ahmadieva K.R., Chursova L.V., Kablov E.N. Jepoksidnoe svjazujushhee, prepreg na ego osnove i izdelie, vypolnennoe iz nego [Epoxy binder prepreg on its base and a product made therefrom] //Rossijskij himicheskij zhurnal. 2010. T. LIV. №1. S. 3–4.
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13. Hrul'kov A.V., Dushin M.I., Popov Ju.O., Kogan D.I. Issledovanija i razrabotka avtoklavnyh i bezavtoklavnyh tehnologij formovanija PKM [Research and development autoclave and non-autoclave molding technology PCM] //Aviacionnye materialy i tehnologii. 2012. №S. S. 292–301.
14. Dushin M.I., Hrul'kov A.V., Muhametov P.P. Vybor tehnologicheskih parametrov avtoklavnogo formovanija detalej iz polimernyh kompozicionnyh materialov [The choice of process parameters autoclave molding parts from polymeric composite materials] //Aviacionnye materialy i tehnologii. 2011. №3. S. 20–26.
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17. Muhametov R.R., Merkulova Ju.I., Chursova L.V. Termoreaktivnye polimernye svjazujushhie s prognoziruemym urovnem reologicheskih i deformativnyh svojstv [Thermosetting polymeric binders with the projected level of rheology and deformation properties] //Klei. Germetiki. Tehnologii. 2012. №5. S. 19–24.
18. Jepoksidnaja kompozicija [Epoxy composition]: pat. 2447104 Ros. Federacija; opubl. 05.10.2010.
19. Crossley R.J., Schubel P.J., Warrior N.A. The experimental determination of prepreg tack and dynamic stiffness //Composites. Part A. 2012. V. 43. P. 423–434.
20. Crossley R.J., Schubel P.J., Warrior N.A. The experimental characterisation and investigate on of prepreg tack /In: Proceedings of ICCM-18. Edinburgh. 2009. P. 1–11.
21. Muhametov R.R., Ahmadieva K.R., Chursova L.V., Kogan D.I. Novye polimernye svjazujushhie dlja perspektivnyh metodov izgotovlenija konstrukcionnyh voloknistyh PKM [New polymeric binders for advanced manufacturing methods of structural fiber PCM] //Aviacionnye materialy i tehnologii. 2011. №2. S. 38–42.
22. Babin A.N. Svjazujushhie dlja polimernyh kompozicionnyh materialov novogo pokolenija [Binders for polymeric composite materials of new generation] //Trudy VIAM. 2013. №4 (viam-works.ru).
23. Muhametov R.R., Ahmadieva K.R., Kim M.A., Babin A.N. Rasplavnye svjazujushhie dlja perspektivnyh metodov izgotovlenija PKM novogo pokolenija [Melt binders promising methods of manufacture of a new generation of PCM] //Aviacionnye materialy i tehnologii. 2012. №S. S. 260–265.
Bespalova E.E., Beljaev А.А., Shirokov V.V.
This article is dedicated to the creation of fire-resistant radar-absorbing material based on inorganic fibers with the purpose to lining of anechoic chambers intended for different tests within a wide frequency range; radar absorbing materials and coatings for protection of hardware against high power electromagnetic influence were developed as well.
2. Kablov E.N. Aviakosmicheskoe materialovedenie [Aerospace materials] //Vse materialy. Jenciklopedicheskij spravochnik. 2008. №3. S. 2–14.
3. Kablov E.N. Materialy i himicheskie tehnologii dlja aviacionnoj tehniki [Materials and chemical technologies, aircraft] //Vestnik Rossijskoj akademii nauk. 2012. T. 82. №6. S. 520–530.
4. Dospehi dlja «Burana». Materialy i tehnologii VIAM dlja MKS «Jenergija–Buran» [Armor for «Buran». Materials and technologies for the ISS VIAM «Energia–Buran»] /Pod obshh. red. E.N. Kablova M.: Fond «Nauka i zhizn'». 2013. 128 s.
5. Beljaev A.A., Kondrashov S.V., Lepeshkin V.V., Romanov A.M. Radiopogloshhajushhie materialy [Radio-absorbing materials] //Aviacionnye materialy i tehnologii. 2012. №S. S. 348–352.
6. Nikol'skij V.V., Nikol'skaja T.I. Jelektrodinamika i rasprostranenie radiovoln [Electrodynamics and propagation]. M.: URSS. 2012. S. 163–164.
7. Beljaev A.A., Bespalova E.E., Romanov A.M. Pozharobezopasnye radiopogloshhajushhie materialy dlja bezjehovyh kamer [Fireproof materials for radio-anechoic chambers] //Aviacionnye materialy i tehnologii. 2013. №1. S. 53–55.
8. Lushina M.V., Parshin S.G., Rzhevskij A.A. Sovremennye jekranirujushhie i radiopogloshhajushhie materialy [Modern shielding and radio absorbing materials] //Sistemy upravlenija i obrabotka informacii. 2011. №22. S. 208–214, 223.
9. Bibikov S.B., Prokof'ev M.V., Kulikovskij K.Je., Zhuravlev V.A. Razrabotka materialov i pokrytij, ispol'zuemyh dlja provedenija radiotehnicheskih ispytanij i obespechenija jelektromagnitnoj sovmestimosti [Development of materials and coatings used for testing of radio and electromagnetic compatibility] //Voprosy oboronnoj tehniki. Ser. «Tehnicheskie sredstva protivodejstvija terrorizmu». 2013. №5–6. S. 56–64.
10. Bibikov S.B., Titov A.N., Cherepanov A.K. Sintez materiala s zadannym kojefficientom otrazhenija v shirokom diapazone chastot i uglov padenija [Synthesis of a material with a specified reflectivity in a wide range of frequencies and angles of incidence] /V sb. trudov XV Mezhdunarodnoj nauch.-tehnich. konf. «Radiolokacija, navigacija, svjaz'». Voronezh. 2009. S. 1578–1584.
11. Bibikov S.B., Zasovin Je.A., Cherepanov A.K., Hmel'nik G.I. Matematicheskoe modelirovanie parametrov mnogoslojnyh radiopogloshhajushhih pokrytij [Mathematical modeling of radar parameters of multilayer coatings] /V sb. trudov XV Mezhdunarodnoj nauch.-tehnich. konf. «Radiolokacija, navigacija, svjaz'». Voronezh. 2009. S. 1585–1595.
12. Latypova A.F., Kalinin Ju.E. Analiz perspektivnyh radiopogloshhajushhih materialov [Analysis of promising radar absorbing materials] //Vestnik Voronezhskogo gosudarstvennogo tehnicheskogo un-ta. 2012. T. 8. №6. S. 70–76.
13. Micmaher M.Ju., Torgovanov V.A. Bezjehovye kamery SVCh [Microwave anechoic chambers]. M.: Radio i svjaz'. 1982. 129 s.
14. Maslov M.Ju., Semakov L.M., Skachkov D.V. Ispytatel'naja bezjehovaja kamera diapazona 1200 MGc [Anechoic chamber test range 1200 MHz] //Telekommunikacii i transport. 2009. Spec. vyp. «Tehnologii informacionnogo obshhestva». S. 123–125.
15. Beljaev A.A., Agafonova A.S., Antipova E.A., Botanogova E.D. Konstrukcionnyj radiopogloshhajushhij material trehslojnoj struktury s soglasujushhim sloem [Structural radar-absorbing material is a three-layer structure with a matching layer] //Trudy VIAM. 2013. №7. St. 02 (viam-works.ru).
16. Agafonova A.S., Beljaev A.A., Kondrashov Je.K., Romanov A.M. Osobennosti formirovanija monolitnyh konstrukcionnyh radiopogloshhajushhih materialov na osnove kompozitov, napolnennyh rezistivnym voloknom [Features of formation of monolithic structural radar absorbing materials based composites filled with resistive fiber] //Aviacionnye materialy i tehnologii. 2013. №3. S. 56–59.
17. Radiopogloshhajushhij material [Radar-absorbing material]: pat. 2417491 Ros. Federacija; opubl. 27.04.2011.
18. Bespalova E.E., Kondrashov Je.K. Osobennosti korrektirovki receptury pozharobezopasnogo materiala dlja bezjehovyh kamer pri izmenenii parametrov radiopogloshhajushhego napolnitelja [Features adjustments recipe fireproof material for anechoic chambers when changing the radar absorbing filler] //Aviacionnye materialy i tehnologii. 2014. №2. S. 48–52.
19. Grashhenkov D.V., Shhetanov B.V., Tinjakova E.V., Shheglova T.M. O vozmozhnosti ispol'zovanija kvarcevogo volokna v kachestve svjazujushhego pri poluchenii legkovesnogo teplozashhitnogo materiala na osnove volokon Al2O3 [The possibility of using a silica fiber as a binder in the preparation of a lightweight heat-fiber-based material Al2O3] //Aviacionnye materialy i tehnologii. 2011. №4. S. 8–14.
20. Volkov V.P., Zeleneckij A.N. i dr. Poluchenie radiozashhitnyh polimernyh materialov ponizhennoj gorjuchesti [Study of the dielectric characteristics of the waveguide method steklosotoplasta] //Plasticheskie massy. 2008. №6. S. 42–46.
21. Shirokov V.V., Romanov A.M. Issledovanie dijelektricheskih harakteristik steklosoto-plasta volnovodnym metodom [Study of the dielectric characteristics of the waveguide method steklosotoplasta] //Aviacionnye materialy i tehnologii. 2013. №4. S. 62–68.
22. Beljaev A.A., Shirokov V.V., Romanov A.M. Osobennosti optimizacii rezonansnyh radiopo-gloshhajushhih materialov nemagnitnogo tipa [Features optimization resonance absorbing materials such as non-magnetic] //Trudy VIAM. 2014. №11. St. 05 (viam-works.ru).
An effect of reinforcing silicon carbide additives and heat treatment on the wear of nickel-phosphorous coatings (NiP) produced by electrodeposition was investigated. It was found that the wear of the investigated coatings could have an abrasive-oxidative nature: predominantly abrasive for NiP–SiC composite coatings and predominantly oxidative for NiP coatings accompanied by fatigue fracture of nickel oxides. Additives of SiC allow increasing the hardness of electrolytic coatings, but they prevent fixation of oxide films formed during friction on the contact surface. Heat treatment increases the hardness of the coatings due to deposition of the crystalline phase Ni3P, which reduces the wear rate of the coatings.
1. Kablov E.N., Mubojadzhjan S.A., Budinovskij S.A., Pomelov Ja.A. Ionno-plazmennye zashhitnye pokrytija dlja lopatok gazoturbinnyh dvigatelej [Ion-plasma protective coatings for gas turbine engine blades] //Konversija v mashinostroe-nii. 1999. №2. S. 42–47.
2. Litye lopatki gazoturbinnyh dvigatelej. Splavy, tehnologii, pokrytija [Alloy blades of gas turbine engines. Alloys Technology, coating]. 2-e izd. /Pod obshh. red. E.N. Kablova. M.: Nauka. 2006. 632 s.
3. Kablov E.N., Muboyadzhyan S.A. Heat-resistant coatings for the high-pressure turbine blades of promising GTES //Russian metallurgy (Metally). 2012. V. 2012. №1. P. 1–7.
4. Mubojadzhjan S.A., Aleksandrov D.A., Gorlov D.S. Nanoslojnye uprochnjajushhie pokrytija dlja zashhity stal'nyh i titanovyh lopatok kompressora GTD [Nanolayer strengthening coatings for protection of steel and titanium compressor blades of GTE] //Aviacionnye materialy i tehnologii. 2011. №3. S. 3–8.
5. Kablov E.N. Korrozija ili zhizn' [Corrosion or life] //Nauka i zhizn'. 2012. №11. S. 16–21.
6. Mubojadzhjan S.A., Galojan A.G. Kompleksnye termodiffuzionnye zharostojkie pokrytija dlja bezuglerodistyh zharoprochnyh splavov na nikelevoj osnove [Integrated thermal diffu-sion heat-resistant coatings for carbon-free heat-resistant nickel-based alloys] //Aviacionnye materialy i tehnologii. 2012. №3. S. 25–30.
7. Kablov E.N., Mubojadzhjan S.A. Teplozashhitnye pokrytija dlja lopatok turbiny vysokogo davlenija perspektivnyh GTD [Thermal barrier coatings for turbine blades of high-pressure turbine engine perspective] //Metally. 2012. №1. C. 5–13.
8. Kablov E.N., Mubojadzhjan S.A. Zharostojkie i teplozashhitnye pokrytija dlja lopatok turbiny vysokogo davlenija perspektivnyh GTD [Heat-resistant and heat-resistant coatings for high-pressure turbine blades promising GTD] //Aviacionnye materialy i tehnologii. 2012. №S. S. 60–70.
9. Kablov E.N. Strategicheskie napravlenija razvitija materialov i tehnologij ih pererabotki na period do 2030 goda [Strategic directions of development of materials and technologies to process them for the period up to 2030] //Aviacionnye materialy i tehnologii. 2012. №S. S. 7–17.
10. Mubojadzhjan S.A., Aleksandrov D.A., Gorlov D.S., Egorova L.P., Bulavinceva E.E. Zashhitnye i uprochnjajushhie ionno-plazmennye pokrytija dlja lopatok i drugih otvetstvennyh detalej kompressora GTD [Protective and strengthening ion-plasma coatings for blades and other critical parts of the compressor GTE] //Aviacionnye materialy i tehnologii. 2012. №S. S. 71–81.
11. Kablov E.N., Mubojadzhjan S.A., Budinovskij S.A., Lucenko A.N. Ionno-plazmennye zashhitnye pokrytija dlja lopatok gazoturbinnyh dvigatelej [Ion-plasma protective coatings for gas turbine engine blades] //Metally. 2007. №5. S. 23–34.
12. Semenychev V.V., Salahova R.K., Tjurikov E.V., Il'in V.A. Zashhitnye i funkcional'nye gal'vanicheskie pokrytija, poluchaemye s primeneniem nanorazmernyh chastic [Functional and protective electroplated coatings obtained using nanoscale particles] //Aviacionnye materialy i tehnologii. 2012. №S. S. 335–342.
13. Kablov E.N., Ospennikova O.G., Lomberg B.S. Strategicheskie napravlenija razvitija konstrukcionnyh materialov i tehnologij ih pererabotki dlja aviacionnyh dvigatelej nastojashhego i budushhego [Strategic directions of development of structural materials and their processing technology for aircraft engines present and future] //Avtomaticheskaja svarka. 2013. №10. S. 23–32.
14. Kablov E.N., Mubojadzhjan S.A., Lucenko A.N. Nanostrukturnye ionno-plazmennye zashhitnye i uprochnjajushhie pokrytija dlja lopatok gazoturbinnyh dvigatelej [Nanostructured ion-plasma protective and strengthening coatings for gas turbine engine blades] //Voprosy materialovedenija. 2008. №2 (54). S. 175–187.
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18. Chen C.K., Feng H.M., Lin H.C., Hon M.H. The effect of heat treatment on the micro-structure of electroless Ni–P coatings containing SiC particles //Thin Solid Films. 2002. V. 416. №1–2. P. 31–37.
19. Pribytkov G.A., Polev I.V. i dr. Struktura i abrazivnaja iznosostojkost' kompozitov tugoplavkij karbid – metallicheskaja matrica. Ch. 1 [Structure and abrasive wear resistance of the composites refractory carbide - metal matrix] //Fizicheskaja mezomehanika. 2004. №7. S. 419–422.
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21. Aslanjan I.R., Shuster L.Sh. Iznashivanie gal'vanicheskih nikel'-fosfornyh pokrytij [Wear a galvanic nickel-phosphorus coatings] //Vestnik mashinostroenija. 2010. №12. S. 34–38.
Heat-resistant nickel alloys are widely applied in the modern aviation industry and engine building. Some critical components subjected to huge thermal and power loadings are made of them. Thus, an important task is to control chemical composition of nickel-based alloys, in particular the content of trace constituents, which include gallium, germanium, arsenic and selenium. Gallium, germanium, arsenic and selenium content in certified reference samples of nickel alloys microalloyed by REM was determined using mass spectrometry with inductively coupled plasma (ICP-MS). The method of dissolution of a sample and its preparation for analysis was described. Spectral interferences were eliminated using the equations of mathematical correction. The detection limits (% mass.) were as follows: Ga – 0,000002, Ge – 0,000002, Se – 0,00003, As – 0,00004. The range of the defined concentrations was 0,000009–0,0023% mass., the relative standard deviation of not higher than 0,05.
1. Kablov E.N., Ospennikova O.G., Vershkov A.V. Redkie metally i redkozemel'nye jelementy – materialy sovremennyh i budushhih vysokih tehnologij [Rare metals and rare earth elements – materials of current and future high-tech] //Trudy VIAM. 2013. №2. St. 01 (viam-works.ru).
2. Kablov E.N. Strategicheskie napravlenija razvitija materialov i tehnologij ih pererabotki na period do 2030 goda [Strategic directions of development of materials and technologies to process them for the period up to 2030] //Aviacionnye materialy i tehnologii. 2012. №S. S. 7–17.
3. Kablov E.N., Petrushin N.V., Svetlov I.L., Demonis I.M. Nikelevye litejnye zharoprochnye splavy novogo pokolenija [Casting nickel superalloys new generation] //Aviacionnye materialy i tehnologii. 2012. №S. S. 36–52.
4. Kablov E.N., Petrushin N.V., Vasilenok L.B., Morozova G.I. Renij v zharoprochnyh nikelevyh splavah dlja lopatok gazovyh turbin (prodolzhenie) [Rhenium in nickel superalloys for gas turbine blades (continued)] //Materialovedenie. 2000. №3. S. 38–43.
5. Kablov E.N., Logunov A.V., Sidorov V.V. Mikrolegirovanie RZM – sovremennaja tehnologija povyshenija svojstv litejnyh zharoprochnyh nikelevyh splavov [Microalloying REM - modern technology improve the properties of heat-resistant nickel alloys casting] //Perspektivnye materialy. 2001. №1. S. 23–34.
6. Kablov E.N. Fiziko-mehanicheskie i tehnologicheskie osobennosti sozdanija zharoprochnyh splavov, soderzhashhih renij [Physical, mechanical and technological features of the creation of high-temperature alloys containing rhenium] //Vestnik Moskovskogo universiteta. Ser. 2. Himija. 2005. T. 46. №3. S. 155–167.
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Zagvozdkina T.N., Karachevtsev F.N., Dvoretskov R.M.
Narrowing of the alloying limits is a current trend in the development of new alloys. In order to determine the exact chemical composition of the alloys under development, it is necessary to use an analyzing procedure, which provides the relative error at least three times lower than the alloying limits. The error value is within 1,5 to 2,5% (rel.) range for the majority of alloying elements. Application of model solutions for atomic absorption analysis to reduce measurement errors of alloying elements and impurities was described in the paper. The use of model solutions as reference samples allowed to reduce the error of measurement techniques down to 1% (rel.).
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It was shown in the paper that the measurement results of reflection ratios of radar-absorbing materials performed in the waveguide for each frequency corresponded to the results of measurements at a certain angle of incidence in case of polarization of the electric vector perpendicular to the plane of incidence; thus, they do not correspond to the measurements at normal incidence. Material permittivity measurement errors caused by a gap between a specimen and waveguide wall were estimated. A simplified expression for estimation of the relative error of permittivity measurements and some examples of errors calculation for the above two cases are given in the paper.
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