Articles

 


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1.
dx.doi.org/ 10.18577/2307-6046-2015-0-1-1-1
УДК 629.7.023.224:669.017.165
Kosmin A.A., Budinovskiy S.A.
INFLUENCE OF SDP-42+VSDP-18 ION-PLASMA COATING ON HEAT-RESISTANCE AND LONG-TERM STRENGTH OF VIN3 INTERMETALLIC ALLOY AT 1200°С

Results of research of cyclic and isothermal heat resistance and long-term strength of new VIN3 intermetallic alloy with overlay ion-plasma SDP-42+VSDP-18 coating at 1200°С are shown on a base of tests up to 500hrs. It is shown that overlay ion-plasma coating SDP-42 (Ni–Cr–Al–Ta–W–Y–Hf)+VSDP-18 (Al–Ni–Cr–Y) ensures a protection of VIN3 alloy within cyclic oxidation at 1200⇄200°С (100 cycles) and isothermal oxi-dation at 1200°С (500 hours). The coating of SDP-42+VSDP-18 system does not reduce passport characteristics of long-term strength of VIN3 alloy at 1200°С (10, 100 and 500 hours).

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2.
dx.doi.org/ 10.18577/2307-6046-2015-0-1-2-2
УДК 629.7.023
Vinogradov S.S., Terkulova Y.A., Kurdyukova E.A., Nikiforov A.A.
WEAR-PROOF, ANTIFRICTION AND FRETTING-RESISTANT COATING BASED ON Ni–B

The developed Ni–B coating impregnated with VAP-5 suspension ensures a low fric-tion factor, high wear- and fretting resistance for friction parts from steels. The coating is workable in air within -80÷+250°C temperature range under specific loadings up to 50 MPa.

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3.
dx.doi.org/ 10.18577/2307-6046-2015-0-1-3-3
УДК 66.045.3
Babashov V.G., Varrik N.M.
HIGH-TEMPERATURE FLEXIBLE FIBROUS INSULATION MATERIAL

Main methods of manufacture of flexible high-temperature fibrous materials for seal-ing and thermal insulation are considered. The method of manufacture of flexible thermal insulation of high-temperature alumina fiber with addition of low-cost and durable quartz fiber was offered and tested, basic properties of the manufactured material are studied. Results of research showed that the suggested method allows to produce an inexpensive flexible heat-insulating material for using at temperatures up to 1400°С on the basis of home raw materials, which is not inferior to world analogs in characteristics.

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4.
dx.doi.org/ 10.18577/2307-6046-2015-0-1-4-4
УДК 662.998
Bespalov A.S., Kyz’min V.V., Babashov V.G.
DAMPING FIBROUS MATERIAL ON BASIS OF HEAT-RESISTANT SYNTHETIC FIBERS

The majority of the heat-proofing materials developed for last years (HPM) on a basis of high-heat-resistant inorganic fibers (quartz, silica, on basis of aluminum oxide et al.) have, as a rule, a rigid fibrous structure. When fastening of such material on an isolated metal surface of an aircraft a cracking of material is probable at difference of temperatures owing to a sharp difference on thermal coefficient of linear expansion (TCLE) in the system «metal- fibrous material». For a solution of the problem it is possible to use an intermediate compensating layer (damper), capable to level a pressure between HPM and a metal surface and to prevent a cracking of fibrous material.

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5.
dx.doi.org/ 10.18577/2307-6046-2015-0-1-5-5
УДК 678.8
Vlasenko F.S., Raskutin A.E., Donetskiy K.I.
APPLICATION OF BRAIDED PREFORMS FOR POLYMER COMPOSITE MATERIALS IN CIVIL INDUSTRIES (review)

The article considers examples of braided preforms application for PCM in various branches of economy , such as construction, machine building, sports and leisure, aero-space industry. Considered the advantages of PCM based on braided preforms as com-pared to composite materials produced by alternative technologies and traditionally used materials.

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6.
dx.doi.org/ 10.18577/2307-6046-2015-0-1-6-6
УДК 667.621
Kovalenko A.V.
STUDY OF RESIN PROPERTIES FOR FORMING OF ARTICLES BY RESIN TRANSFER MOLDING

One of relatively new methods of articles manufacture from polymer composite materials is a resin transfer molding technology (RTM -technology). Basic principle of the method is an injection of molding resin into a mold cavity,the preform contains a packet of «dry» reinforcing fiber. During injection resin is spreading throughout an entire volume of the mold cavity, displacing the air located there, and impregnates fibers. Resin transfer molding involves a usage of a rigid sealed form, consisting of a matrix and punch. Study of properties of the binder for articles forming by resin transfer molding method is considered in the present article.

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7.
dx.doi.org/ 10.18577/2307-6046-2015-0-1-7-7
УДК 624.6.012.2
Korotkov I.A., Borshchev A.V., Karavaev R.Y., Vlasenko F.S.
CONSTRUCTION OF CONCRETE-COMPOSITE BRIDGES

One of the main disadvantages of ferroconcrete and metal bridges construction, are low speed and high cost. A possible way to solve these problems is a usage of composite materials. A possibility of application of braided preforms during a construction of bridges and comparison of the speed and cost of construction with ferroconcrete and metal bridges is considered in this article

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8.
dx.doi.org/ 10.18577/2307-6046-2015-0-1-8-8
УДК 543.42:678.8
Mekhanik E.A., Rastegayeva G.Yu.
DETERMINATION OF CONTENT OF CARBON, SULFUR, OXYGEN, AND HYDROGEN MASS PORTION IN ORGANIC AND POLYMERIC NONMETALLIC MATERIALS BY GAS ANALYZERS LECO

A determination of content of carbon and sulfur in organic and polymeric nonmetallic materials by method of combustion in an induction furnace of gas analyzer Leco CS-444 followed by detection in an infrared cell of spectrometer was investigated. A deter-mination of content of oxygen and hydrogen in organic and polymeric nonmetallic ma-terials by melting in inert gas were provided on TC-600 and RHEN 602 (Leco) gas an-alyzers followed by detection of oxygen in IR-cell of gas analyzer TC-600 and hydrogen in a conductance-measuring cell of RHEN 602 gas analyzer. In this paper we chose catalysts for complete extraction of these elements from organic and polymeric nonmet-allic materials. Accuracy and correctness of measurement results were confirmed by a good repeatability of the measured on gasanalyzes values of elements mass portion with their calculated values in the studied organic substances of the known molecular formula.

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9.
dx.doi.org/ 10.18577/2307-6046-2015-0-1-9-9
УДК 535.853.22
Protsenko O.M.
APPLICATION OF THIN STANDARD SPECIMENS OF ALLOY COMPOSITION FOR SPECTRAL ANALYSIS IN MODERN OPTICAL EMISSION SPECTROMETERS

The certified reference specimens (CRMs) in the form of rods of 6–15 cm diameter manufactured in 1940–1970 do not fit for modern spectrometers. Standard specimens of 17–40 mm are needed. At present VIAM manufactures CRMs with diameter of 30–40 mm. CRMs in the form of rods, turned out earlier are used with special adapters. A pos-sibility of application of OT4 titanium alloy rod-CRMs for graduation of Q8Magellan spectrometer was studied. Then analysis of 30–40 mm diameter specimens is performed according to graduation. Calibration graphs were plotted. It was shown, that the root-mean-square errors of measurement of rod-CRMs with diameter of 11 mm and CRMs with diameter of 40 mm does not differ practically. The measurement error is in ac-cordance with requirements of standard documentation.

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10.
dx.doi.org/ 10.18577/2307-6046-2015-0-1-10-10
УДК 678.747.2
Sorokin A.E., Beider E.Ya., Perfilova D.N.
EFFECT OF CLIMATIC FACTORS ON PROPERTIES OF CARBON FIBER REINFORCED PLASTIC BASED ON POLYPHENYLENESULFIDE RESIN

Properties of carbon fiber reinforced plastic based on thermoplastic matrix were studied. An influence of different environments and temperatures on properties of carbon plastic polyphenylenesulfide resin was studied.It has been shown that CFRP has a high moisture and water resistance at normal and elevated temperatures. Influence of different lay-ups of carbon plies on the behavior of CFRP during aging in moisture environment and water has been revealed. It was established that the studied material is characterized by a high level of maintenance of strength characteristics after an effect of water, moisture, thermo-moisture aging, thermal aging and treatment by thermal cycles from -60 to +160°C. It has been shown during research that CFRP has a high level of maintenance of the properties and it is competitive with foreign and domestic analogues. It may be used in wide temperature range from -60 to +160°C.

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11.
dx.doi.org/ 10.18577/2307-6046-2015-0-1-11-11
УДК 669.85
Titov V.I., Goundobin N.V., Pilipenko L.V.
DETERMINATION OF PALLADIUM IN POWDER MATERIALS OF ELECTRICAL PRODUCTS AFTER THEIR SERVICE LIFE EXHAUSTING

The technique of determination of palladium content in powder materials of electrical products, exhausted their service life was developed. One of the most important types of secondary raw material for platinum group metals manufacture are electrical products used in aerospace engineering, which spent their lifetime. Palladium is applied not only for a development of materials of aviation applications. It is also used, for example, for a production of catalysts used in chemical and petrochemical industry. Palladium content in products, exhausted their service life may range from hundredths to integral percent. These are rather high values, so a relevance of this work is obvious, since the earth's resources of rare metals are limited. The developed method allows to control a content of a precious metal (palladium) with sufficiently low level of error.

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12.
dx.doi.org/ 10.18577/2307-6046-2015-0-1-12-12
УДК 620.165.79
Chutskova E.U., Aleksashin V.M., Barinov D.Y., Dement’eva L.A.
THE DIFFERENTIAL SCANNING CALORIMETRY APPLICATION FOR KINETIC REGULARITIES INVESTIGATION OF THE EPOXY ADHESIVE VK-36R CURING PROCESS

The reaction heat of the curing epoxy adhesive VK-36R was measured by differential scanning calorimetry. Kinetic calculations based on them were produced. A kinetic model of the curing reaction of the epoxy binder was developed. On the basis of the kinetic model change in concentrations of reactants and the degree of conversion in the polymerization process according to the selected kinetic model were evaluated. The study features of the epoxy adhesive multi-stage curing reaction were revealed.

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