The influence of compression conditions on the peculiarities of self-propagating exothermal reaction in Al–Ni powder reactive materials

Громов, Д. Г.; Шерченков, А. А.; Lebedev, E. A.; Бабич, А. В.; Nemtseva, S Yu; Shaman, Yu. P.; Maniecki, Tomasz P.; Maniukiewicz, Waldemar; Mierczyński, Paweł; Ciesielski, Radosław; Гаврилов, С. А.

doi:10.1007/s10973-018-7416-3

Cited by 5 publications

(9 citation statements)

References 42 publications

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“…These metastable solids are composed from thin layers and fine powders of different reactants. For reactive multilayer materials, total layer thicknesses are in the range of ~0.1 to 300 µm [1]. On the other hand, for reactive nanoparticles, particle size varies from several micrometers to tens of nanometers.…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, for reactive nanoparticles, particle size varies from several micrometers to tens of nanometers. These are the key feature for reactive materials which distinguish them from others [1]. In general, the reactants are chosen on the basis of their tendency to react and generate heat.…”

Section: Introductionmentioning

confidence: 99%

“…V m,φ is the molar volume of the phase and W φ is the molar surface area. Equation (1) shows that specific properties are proportional to the specific surface area and inversely proportional to the size of the phase. These specific properties become negligible beyond the 100 nm size of the phase.…”

Section: Introductionmentioning

confidence: 99%

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Size Dependent Properties of Reactive Materials

2022

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The nature of the self-sustained reaction of reactive materials is dependent on the physical, thermal, and mechanical properties of the reacting materials. These properties behave differently at the nano scale. Low-dimensional nanomaterials have various unusual size dependent transport properties. In this review, we summarize the theoretical and experimental reports on the size effect on melting temperature, heat capacity, reaction enthalpy, and surface energy of the materials at nano scale because nanomaterials possess a significant change in large specific surface area and surface effect than the bulk materials. According to the theoretical analysis of size dependent thermodynamic properties, such as melting temperature, cohesive energy, thermal conductivity and specific heat capacity of metallic nanoparticles and ultra-thin layers varies linearly with the reciprocal of the critical dimension. The result of this scaling relation on the material properties can affect the self-sustained reaction behavior in reactive materials. Resultant, powder compacts show lower reaction propagation velocities than bilayer system, if the particle size of the reactants and the void density is decreased an increase of the reaction propagation velocity due to an enhanced heat transfer in reactive materials can be achieved. Standard theories describing the properties of reactive material systems do not include size effects.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Size Dependent Properties of Reactive Materials

2022

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“…Today, researchers are looking for new ways to use the thermal energy released during self-propagating exothermic reactions between two or more components that form energetic materials, which are also called metastable intermixed composites [1][2][3]. The most studied of this class of materials are bimetallic systems [4,5], metal-metal oxide pairs [6] and combinations thereof [7,8]. The main parameters of the energetic material are internal energy density, amount of gas release, initiation energy, and combustion rate [9].…”

Section: Introductionmentioning

confidence: 99%

Electrophoretic deposition of Al-CuO_x thermite materials on patterned electrodes for microenergetic applications

et al. 2021

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In this paper, the features and main nuances of electrophoretic deposition of energetic nanoscale powder materials based on Al and CuOx were investigated and formulated. We have successfully demonstrated the advantage of using suspension non-stop ultrasonic mixing and horizontal electrode placement during deposition. The possibility of local deposition of energetic materials on an electrically conductive topological pattern was shown. The influence of the mass of the deposited material on the behavior of the wave combustion process of a locally formed energetic material was investigated. This study provides guidance for the multiobjective optimization and increasing the reproducibility of the local electrophoretic deposition process of energetic materials. The results indicate that Al-CuOx mixture can be integrated into microenergy systems as a material with excellent specific energy characteristics and high combustion rate.

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“…This amount of reagent mass loss can significantly change the combustion parameters of the composition. Therefore, the pressing load influences both the ageing of the composition and its burn rate [15,16]. It was also found that the addition of ferric oxide decreases the share of oxidised iron [14].…”

Section: Introductionmentioning

confidence: 99%

Study of gasless compositions used in time-delay elements

Gerlich

Wojewódka

2019

J Therm Anal Calorim

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This article presents the results of burn rate measurements conducted for a Fe/BaO 2 pyrotechnic delay composition. Compositions with an iron content between 15% (w/w) and 50% (w/w) yielded burn rates in the range of 4-36 mm s -1 . Mixtures containing more than 50% (w/w) iron could not be initiated by a powder fuse and are not suited for application as delay compositions. This study also presents a cost-efficient method for measuring linear combustion velocities and its application to the investigation of the Fe/BaO 2 composition. Thermogravimetric and XRD studies have revealed that the reactions between iron and barium peroxide take place in the solid phase, leading to the formation of varied spinels.

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The influence of compression conditions on the peculiarities of self-propagating exothermal reaction in Al–Ni powder reactive materials

Cited by 5 publications

References 42 publications

Size Dependent Properties of Reactive Materials

Size Dependent Properties of Reactive Materials

Electrophoretic deposition of Al-CuO_x thermite materials on patterned electrodes for microenergetic applications

Study of gasless compositions used in time-delay elements

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The influence of compression conditions on the peculiarities of self-propagating exothermal reaction in Al–Ni powder reactive materials

Cited by 5 publications

References 42 publications

Size Dependent Properties of Reactive Materials

Size Dependent Properties of Reactive Materials

Electrophoretic deposition of Al-CuOx thermite materials on patterned electrodes for microenergetic applications

Study of gasless compositions used in time-delay elements

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Product

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Electrophoretic deposition of Al-CuO_x thermite materials on patterned electrodes for microenergetic applications