Manufacturing and Performance of Nanometric Al/MoO3 Energetic Materials

Walter, K.C.; Pesiri, David R.; Wilson, Dennis

doi:10.2514/1.25461

Cited by 36 publications

(42 citation statements)

References 5 publications

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“…[4,5,[7][8][9][10][11][12][13][14][15][16] For instance, decreasing the size of the nanoparticles enhances the combustion rate and lowers the ignition temperature. Moreover, the arrangement of the oxidizer and the fuel nanoparticles and their intimacy significantly impact the nanothermite burn rate and determine the propagation rate of the combustion wave front and the release of energy.…”

Section: Introductionmentioning

confidence: 99%

High‐Energy Al/CuO Nanocomposites Obtained by DNA‐Directed Assembly

Séverac

Alphonse

Estève

et al. 2011

Adv Funct Materials

152

108

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Over the next few years, it is expected that new, energetic, multifunctional materials will be engineered. There is a need for new methods to assemble such materials from manufactured nanopowders. In this article, we demonstrate a DNA-directed assembly procedure to produce highly energetic nanocomposites by assembling Al and CuO nanoparticles into micrometersized particles of an Al/CuO nanocomposite, which has exquisite energetic performance in comparison with its physically mixed Al/CuO counterparts. Using 80 nm Al nanoparticles, the heat of reaction and the onset temperature are 1.8 kJ g −1 and 410 °C, respectively. This experimental achievement relies on the development of simple and reliable protocols to disperse and sort metallic and metal oxide nanopowders in aqueous solution and the establishment of specific DNA surface-modification processes for Al and CuO nanoparticles. Overall, our work, which shows that DNA can be used as a structural material to assemble Al/Al, CuO/CuO and Al/CuO composite materials, opens a route for molecular engineering of the material on the nanoscale.

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Section: Introductionmentioning

confidence: 99%

High‐Energy Al/CuO Nanocomposites Obtained by DNA‐Directed Assembly

Séverac

Alphonse

Estève

et al. 2011

Adv Funct Materials

152

108

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“…For this reason, the use of the same initial nanopowders, which were stored and mixed under different conditions, usually yields different results in terms of ignition and combustion characteristics of such systems. The data on the chemical compositions and particle sizes of reagents of some superthermite systems studied in [5][6][7][8][9][10][11][12][13][14] are summarized in Table 1. The widest range of metal nanoparticles was provided in experiments with the Al-MoO 3 system.…”

Section: Powder Nanosystemsmentioning

confidence: 99%

“…These highly exothermic systems involve mixtures of nanopowders of a reducing metal (A) and an oxide (BO x ). A large amount of heat (Q) is released in the classical reduction reaction [10] 0.65-1. 6 80 200 -30 nm [11] Al-WO 3 1-1.5 80 100 -20 nm [12] Al-Bi 2 O 3 1-1.5 80 25-2 μm (filaments) [13] 1 40, 100 40, 108, 321, 416 mn [12] Al-CuO 1-1.5 80 100-20 mn [12] Al-Fe 2 O 3 0.9-4 52 BET = 50-300 m 2 /g [14] A + y…”

Section: Powder Nanosystemsmentioning

confidence: 99%

Combustion of heterogeneous nanostructural systems (Review)

Рогачев

Mukasyan

2010

Combust Explos Shock Waves

139

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“…Al- The combustion characteristics of binary nanothermite materials containing spherical nanosize aluminum have been well characterized [5][6][7][8]. When the fuel (80 nm spherical aluminum) and different nanosize solid oxidizers are well mixed the combustion velocity of the binary nanothermite materials can range from 35-40 m/s (Al-Fe 2 O 3 ) to 600-800 m/s (Al-Bi 2 O 3 ) [7].…”

Section: Introductionmentioning

confidence: 99%