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High-speed visualization of aluminum nanopowder combustion in air
Saratov Fall Meeting 2018: Laser Physics, Photonic Technologies, and Molecular Modeling, 2019This paper presents the results of study devoted to the laser speckle imaging method application for characterizing the combustion of aluminum nanopowder in air. The experimental schema is introduced for the combustion process characterization. The main advantage of speckle imaging is the ability to study the surface of the burning sample despite high ...
Fedor A. Gubarev +3 more
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Nanopowders produced by electrical explosion of aluminum wires in water
2007 International Forum on Strategic Technology, 2007In this paper the methods for regulation of phase and size compositions of aluminium oxides nanopowder produced by electrical explosion of aluminium wires using water as surrounding ambient are shown. The different crystal modifications of aluminium oxides nanopowder were produced: Al(OH)3, gamma-Al2O3, alpha-Al2O3.
A.P. Ilyin, O.B. Nazarenko
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Structural and Energy State of Electro-Explosive Aluminum Nanopowder
Key Engineering Materials, 2016Using XRD method it was revealed that in the stress-strain state of Al nanopowder lattice a non-significant amount of energy was stored (~0.385 J/g). Nevertheless, according to the data obtained by differential thermal analysis (DTA) the total amount of stored energy in the nanopowder was 348 J/g.
Andrei V. Mostovshchikov +2 more
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Risk assessment of the ignitability and explosivity of aluminum nanopowders
Process Safety and Environmental Protection, 2012Previously, an extensive study has been carried out in order to assess the ignition sensitivity and explosivity of aluminum nanopowders. It showed notably that, as the particle size decreases, minimum ignition temperature and minimum ignition energy decrease, indicating higher potential inflammation.
Vignes, Alexis +6 more
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Characterization of aluminum nanopowders after long-term storage
Applied Surface Science, 2014Abstract The characteristics of aluminum nanopowders obtained by electrical explosion of wires, passivated by air and stored for a long time under natural conditions are analyzed. The aluminum nanopowder produced in hydrogen had been stored for 27 years; the nanopowders produced in argon and nitrogen had been stored for 10 years.
O.B. Nazarenko +2 more
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Products of combustion of mixtures of aluminum and tungsten nanopowders in air
Combustion, Explosion, and Shock Waves, 2007It is experimentally found that intermediate products of combustion of mixtures of aluminum and tungsten nanopowders in air are aluminum nitrides, remainders of metallic tungsten and aluminum, complex oxides, and possibly tungsten nitrides. These products were obtained by terminating the combustion process when a temperature close to the maximum value ...
A. P. Il’in, L. O. Tolbanova
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Modification of properties of aluminum protective anodes by nanopowder materials
Thermophysics and Aeromechanics, 2018Experimental study was performed on the influence of nanosized refractory nanopowders on the structure and electrochemical characteristics of aluminum alloy AlZn4 used as protective anode. It was found that modification of alloy AlZn4 with nanopowder of aluminum nitride or diamond induces refining of alloy structure by the factor of 1.5, increases the ...
N. M. Bozhanova +4 more
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Characterization and Combustion of Aluminum Nanopowders in Energetic Systems
2014Following a comprehensive literature survey about use of Al nanopowders in a range of HEM applications — including rocket propulsion, pyrotechnics, and explosives - a through treatment is offered of the ideal and delivered thermochemical performance of the most interesting metallic ingredients to augment solid and hybrid rocket propulsion.
DE LUCA, LUIGI +8 more
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Production of nanopowders of yttrium-aluminum garnet by the Pechini method
Refractories and Industrial Ceramics, 2011Results are presented from the synthesis of nanopowders of yttrium-aluminum garnet by the Pechini method. It is established that the Pechini method is a promising technology for producing optically transparent ceramics.
A. V. Belyakov, N. A. Kulikov
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PHOTOACOUSTIC DETERMINATION OF THERMAL CONDUCTIVITY OF ALUMINUM NANOPOWDERS
High Temperature Material Processes (An International Quarterly of High-Technology Plasma Processes), 2007de Izarra, Charles, An, Vladimir
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