Constant Volume Explosions of Aerosols of Metallic Mechanical Alloys and Powder Blends

Schoenitz, Mirko; Dreizin, Edward L.; Shtessel, É. A.

doi:10.2514/2.6144

Cited by 68 publications

(32 citation statements)

References 15 publications

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“…The ignition temperatures of these solutions (≈1000 K) turned out to be substantially lower than that for aluminum (≈2300 K). Qualitatively similar results were also obtained in Al-Ti, Al-Li, and Al-Zr systems [89][90][91].…”

Section: Mechanically Activated Compositionssupporting

confidence: 87%

“…Thus, it was demonstrated that mechanical activation can lead to formation of nonequilibrium oversaturated solutions with small-sized crystallites, which can possess unique reactive properties owing to structural changes. Based on these results, the parameters of ignition and combustion of such nonequilibrium oversaturated nanocryctallite solutions in various oxidizer media (air, oxygen) were further investigated [88][89][90][91]. For instance, Shochin et al [88] prepared a nonequilibrium solution in the Mg-Al (10-50% Mg) by this method.…”

Section: Mechanically Activated Compositionsmentioning

confidence: 96%

See 1 more Smart Citation

Combustion of heterogeneous nanostructural systems (Review)

Рогачев

Mukasyan

2010

Combust Explos Shock Waves

139

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Section: Mechanically Activated Compositionssupporting

confidence: 87%

Section: Mechanically Activated Compositionsmentioning

confidence: 96%

Combustion of heterogeneous nanostructural systems (Review)

Рогачев

Mukasyan

2010

Combust Explos Shock Waves

139

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“…It has been reported that ignition and combustion of Al-Mg alloy powders were significantly enhanced when compared with those of Al and Mg powders. Metastable Al-Mg alloys with Mg concentrations ranging from 5 to 50 % showed an increase in burning rates and a decrease in ignition temperatures [10][11][12]. Also, it was shown that Al-Mg alloys ignite at much lower temperatures in comparison with pure Al [2].…”

Section: Introductionmentioning

confidence: 95%

A comparative study of thermal behaviors and kinetics analysis of the pyrotechnic compositions containing Mg and Al

Fathollahi

Behnejad

2015

J Therm Anal Calorim

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The purpose of this research is to analyze the thermal behavior and kinetics of the pyrotechnic compositions including Al ? KClO 4 , Mg ? KClO 4 , Al ? Mg ? KClO 4 , MgAl ? KClO 4 and Al ? MgAl ? KClO 4 mixtures. The differential scanning calorimeter coupled with thermogravimetry analysis was employed to illustrate the reaction process of these pyrotechnic compositions. Moreover, the bomb calorimetry was utilized to compare experimental and theoretical heats of reaction. The apparent activation energy (E a ), frequency factor (A), the critical ignition temperature of thermal explosion and the self-accelerating decomposition temperature (T SADT ), were calculated using Kissinger approach. The results showed that the composition containing MgAl had the highest activation energy and frequency factor; however, the critical ignition temperature of their oxidation reaction was lowest value. In agreement with the theoretical value, the highest experimental heat of reaction for the composition MgAl/KClO 4 corresponds to the more complete combustion of metastable MgAl as an alloying mixture of Aluminum and Magnesium with equal proportions. These results suggest that benchmark values for an optimum designation and issues pertinent to the storage and handling of pyrotechnics containing Mg, Al and KClO 4 .

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“…It has been suggested recently that aluminum-rich Al-Mg alloys could also potentially replace aluminum powders in energetic materials, e.g., propellants, explosives, and pyrotechnics [12,13]. These materials have high combustion enthalpies and have been observed to burn faster and to oxidize more completely than pure aluminum [4][5][6]. Al.…”

Section: Introductionmentioning

confidence: 99%

“…MA has been used previously for the preparation of a range of Al-Mg alloys with bulk Mg concentrations varying from 5 to 80 at.% [4][5][6][7][8][9]. These materials are of interest for a number of applications, such as materials with high strength to weight ratios [10] or hydrogen storage materials [11].…”

Section: Introductionmentioning

confidence: 99%