Reactivity of superfine aluminum powders stabilized by aluminum diboride

Kwon, Young-Soon; Gromov, A. A.; Ilyin, Alexander P.

doi:10.1016/s0010-2180(02)00414-5

Cited by 44 publications

(20 citation statements)

References 6 publications

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“…2). Boron-stabilized nano-Al [15] was an attractive component for propellants, because boron-coated particles can increase powder combustion enthalpy. Aluminum content and S sp for this sample were nearly the same as for sample 1 (ALEX , Table 1), and the degree of conversion up to 1400 8C was average (Table 3).…”

Section: Gas-and Solid-passivated Anps (Samples 1-6)mentioning

confidence: 99%

Passivation of the surface of aluminum nanopowders by protective coatings of the different chemical origin

Kwon¹,

Gromov²,

Strokova³

2007

Applied Surface Science

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129

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Section: Gas-and Solid-passivated Anps (Samples 1-6)mentioning

confidence: 99%

Passivation of the surface of aluminum nanopowders by protective coatings of the different chemical origin

Kwon¹,

Gromov²,

Strokova³

2007

Applied Surface Science

Self Cite

129

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“…)), very thin oxide ¦lms on the particle surface, and capillary system [16]. The nAl obtained by the wire electrical explosion (WEE) method [17] is not pyrophoric after slow air-passivation, but can burn in the self-propagating regime in air by local ignition, which makes it di¨erent from micron-sized powders [18]. The combustion process of nAl was studied in two oxidizing media (air and propellant AP/HTPB/25% Al(ASD-4 + nAl)/HMX) in this work.…”

Section: Experiments and Discussionmentioning

confidence: 99%

Aluminum nanoparticles burning − still a puzzle?

Gromov¹,

Popenko²

2009

Progress in Propulsion Physics

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The experimental data on the aluminum nanopowders (nAl) combustion in oxidizing media (air, propellants AP * /HTPB † /Al/HMX ‡ , and energetic compositions) assuming the phenomenon of nitrides formation with the high yield is generalized. In the present work, the nAl produced by electrical explosion of wires was studied. The temperature, burning rate, and radiation were measured at combustion and the actual burning process was recorded by a videocamera. Scanning electron microscopy (SEM), X-ray di¨raction (XRD), and chemical analysis were performed on the both initial powders and ¦nal condensed products. It was experimentally proved that the combustion process of aluminum nanoparticles was two staged independently of burning conditions in nitrogen-containing media. The formation of nitrides in presence of molecular nitrogen is the determining stage in the particles combustion. A qualitative discussion is given on the kinetic limitation for AlN (AlON) oxidation due to rapid condensation and encapsulation of solid AlN (AlON).

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“…It should be noted that the problem of encapsulation of ultrafine aluminum powders is of particular importance in connection with the problem of degradation of their properties in storage due to oxidation and hygroscopicity [15,16].…”

Section: Methods Of Modifying Particles Of Powder Metallic Fuelmentioning

confidence: 99%

Ignition, combustion, and agglomeration of encapsulated aluminum particles in a composite solid propellant. I. Theoretical study of the ignition and combustion of aluminum with fluorine-containing coatings

Yagodnikov

Andreev

Воробьев

et al. 2006

Combust Explos Shock Waves

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This paper gives a brief review of methods for modifying metallic fuels for composite solid propellants, including the application of coatings onto aluminum particles (encapsulation). Requirements for the coating material are formulated. By means of thermodynamic calculations, it is shown that some fluorine-containing coatings reduce the content of the condensed phase in the propellant combustion products without decreasing the specific impulse. A mathematical model for the ignition of a single encapsulated particle is proposed. Calculations show a decrease in the ignition time of an aluminum particle with a fluorine-containing coating.

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Reactivity of superfine aluminum powders stabilized by aluminum diboride

Cited by 44 publications

References 6 publications

Passivation of the surface of aluminum nanopowders by protective coatings of the different chemical origin

Passivation of the surface of aluminum nanopowders by protective coatings of the different chemical origin

Aluminum nanoparticles burning − still a puzzle?

Ignition, combustion, and agglomeration of encapsulated aluminum particles in a composite solid propellant. I. Theoretical study of the ignition and combustion of aluminum with fluorine-containing coatings

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