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Aviation materials and technologies №3, 2011

Contents

  • S.A. Muboyadjan, D.A. Alexandrov, D.S. Gorlov

    Nanolayer strengthening coatings for the protection of steel and titanium GTE compressor blades

  • E.F. Volkova, V.V. Antipov, G.I. Morosova

    Characteristic features of the structure and phase composition formation of wrought semifinished products made of MA14 commercial alloy

  • V.P. Migunov, D.P. Farafonov

    Tests of basic service properties of new-grade sealing materials for GTE passages

  • M.I. Dushin, A.V. Khrulkov, R.R. Mukhametov

    Selected technological parameters for the autoclave molding of polymer composites materials

  • N.E. Uvarova, L.A. Orlova, Yu.E. Lebedeva, D.V. Graschenkov

    Electron paramagnetic resonance for studying the structural changes during the gel formation process when producing ceramics and glass ceramic by sol-gel method

  • V.S. Erasov, E.A. Kotova

    Erosion resistance of aviation materials against the solid (dusty) particles

  • V.V. Antipov, O.G. Senatorova, V.V. Sidelnikov

    Investigation of fire resistance of hybrid aluminium-glassplastic SIAL Laminates

Содержание номера
1.

DOI:

UDC: 629.7.023.222:620.193.5:629.7.03-226.2

Pages::

S.A. Muboyadjan1, D.A. Alexandrov, D.S. Gorlov2

[1] FEDERAL STATE UNITARY ENTERPRISE "ALL-RUSSIAN SCIENTIFIC RESEARCH INSTITUTE OF AVIATION MATERIALS", admin@viam.ru
[2] Federal state unitary enterprise «All-Russian Scientific-Research Institute of Aviation Materials» of National Research Center «Kurchatov Institute»

Nanolayer strengthening coatings for the protection of steel and titanium GTE compressor blades

The production possibility of strengthening nanolayer coatings is presented by the consequent and periodical vacuum-arc evaporation of various carbide and nitride-forming metals under the aggressive medium conditions. The nanolayer strengthening coatings with TiC-CrC, ZrN-CrN, TiN-ZrN, TiN-CrN, TiN-AlN layers with the thickness from 15 to 70 nm were produced. The metallographic and metallophysical studies were made for the produced coatings. The crosion resistance, microhardness and heat resistance of nanolayer coatings were also examined.

Keywords: ion-plasma coatings,nanolayer strengthening coatings,assisted sedimentation

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    2.

    DOI:

    UDC: 669.721.5

    Pages::

    E.F. Volkova1, V.V. Antipov1, G.I. Morosova

    [1] Federal state unitary enterprise «All-Russian Scientific-Research Institute of Aviation Materials» of National Research Center «Kurchatov Institute»

    Characteristic features of the structure and phase composition formation of wrought semifinished products made of MA14 commercial alloy

    The study results of the formation features of MA14 Mg-base alloy structure and phase composition are given depending on the technological production parameters and heat treatment of wrought semifinished products. The structure and phase morphology effect on the basic mechanical property level and anisotropy is also considered. The study was made with the use of microscopic, physico-chemical, X-raystructure and microroentgen-spectrum analysis.

    Keywords: phase composition,structure features,multistage shrinkage,heat treatment,mechanical property anisotropy,commercial semifinished products of MA14 alloy

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      3.

      DOI:

      UDC: 621.792.8

      Pages::

      V.P. Migunov1, D.P. Farafonov2

      [1] Federal state unitary enterprise «All-Russian Scientific-Research Institute of Aviation Materials» of National Research Center «Kurchatov Institute»
      [2] ALL-RUSSIAN SCIENTIFIC RESEARCH INSTITUTE OF AVIATION MATERIALS, admin@viam.ru

      Tests of basic service properties of new-grade sealing materials for GTE passages

      The principally new abradable sealants on the base of discrete metallic fibers have been developed for GTE compressor and turbine with the operating temperatures to 1100°C. The laboratory tests of basic service properties of developed materials were performed. The materials have no analogues in service property level. Due to the high abradability their application will allow to reduce radial clearance values in GTE passages for the prevention of operating gas leakage and to decrease considerably the blade wearing over the face planes at their contacting and cutting into the sealing materials.

      Keywords: abradable sealing materials,metallic fibers,properties,abradability

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        4.

        DOI:

        UDC: 678.027.7:678.8

        Pages::

        M.I. Dushin1, A.V. Khrulkov1, R.R. Mukhametov2

        [1] Federal state unitary enterprise «All-Russian Scientific-Research Institute of Aviation Materials» of National Research Center «Kurchatov Institute»
        [2] ALL-RUSSIAN SCIENTIFIC RESEARCH INSTITUTE OF AVIATION MATERIALS, admin@viam.ru

        Selected technological parameters for the autoclave molding of polymer composites materials

        The study results are given for the process of removing the binder excesses out of specimens with various number of prepreg layers during the glass fiber reinforced plastics vacuum autoclave molding. The values of filler changing thickness and its permeability are shown depending on the applied molding pressure besides, some recommendations for the molding conditions of thich-walled specimens are also given in the present paper.

        Keywords: autoclave molding,binder content,permeability,pressure,duration

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          5.

          DOI:

          UDC: 620.179.14

          Pages::

          N.E. Uvarova, L.A. Orlova1, Yu.E. Lebedeva2, D.V. Graschenkov2

          [1] Dmitry Mendeleev University of Chemical Technology of Russia
          [2] Federal state unitary enterprise «All-Russian Scientific-Research Institute of Aviation Materials» of National Research Center «Kurchatov Institute»

          Electron paramagnetic resonance for studying the structural changes during the gel formation process when producing ceramics and glass ceramic by sol-gel method

          The bases of electron paramagnetic resonance method are considered in the paper. The study results of structure formation processes, occuring in the process of solution (sol)→gel→crystalline phase transitions are presented for RO: Al2O3-SiO2 (RO: SrO, СaO) systems by the electron paramagnetic resonance method.

          Keywords: sol-gel technology,gel formation,glass ceramic,structure formation,electron paramagnetic resonance

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            6.

            DOI:

            UDC: 620.193.2

            Pages::

            V.S. Erasov1, E.A. Kotova2

            [1] Federal state unitary enterprise «All-Russian Scientific-Research Institute of Aviation Materials» of National Research Center «Kurchatov Institute»
            [2] Federal state unitary enterprise «All-Russian scientific research institute of aviation materials

            Erosion resistance of aviation materials against the solid (dusty) particles

            The flying vehicle components are subjected to erosion during the service of aeronautical engineering under the air dusting conditions. The erosion effect is the most dangerous one for engine propfans and compressor blades; blades of helicopters, airscrews, fuselage skin and other components. Along with it the analysis of all factors effecting on the erosion resistance characteristics of materials was also carried out. Besides it, the possible mechanisms and types of erosion failure were considered and some main problems were determined on the basis of it.

            Keywords: solid particles,erosion effect,collision parameters,erosion mechanism,failure type,erosion resistance,erosion tests

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              7.

              DOI:

              UDC: 669.715+678.034

              Pages::

              V.V. Antipov1, O.G. Senatorova1, V.V. Sidelnikov1

              [1] Federal state unitary enterprise «All-Russian Scientific-Research Institute of Aviation Materials» of National Research Center «Kurchatov Institute»

              Investigation of fire resistance of hybrid aluminium-glassplastic SIAL Laminates

              The results of fire resistance tests (resistance to propagation of flame) of SIAL-type aluminium-glassplastic Laminates of varions structure and composition (in the first turn, on a base of 1441 Al-Li alloy sheets) are presented. Tests of specimens, having 200×200 mm working area on laboratory set ups under the influence of gas fire, showed, that SIAL allow (in comparison with monolithic sheets of aluminum alloys) to increase the time of burn-through by the order (from 1,5 min to 15 min at 1100°C), to preserve a rigidness of structure and thus to increase the time of evacuation passengers from an aircraft. The mechanism of counteraction to fracture of SIALs under influence of flame was established. The results of tests have also shown, that SIAL (GLARE) may be used as firewall applications.

              Keywords: flame,temperature,time,burn-through,gas set up

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