Correlating ignition mechanisms of aluminum-based reactive materials with thermoanalytical measurements

Dreizin, Edward L.; Schoenitz, Mirko

doi:10.1016/j.pecs.2015.06.001

Cited by 74 publications

(20 citation statements)

References 147 publications

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“…Applying an external source of energy (ignition power 3 ignition time), locally on the multilayer results in an increase of the temperature in the multilayer section directly in contact with the heated surface. This can be done by electrostatic discharge [29][30][31], mechanical impact [32], laser irradiation [7,33], electrical heating (spark) [34,35] and, thermal hot points [36]. A good understanding of the point of ignition, depending on the ignition technique, multilayer stoichiometry (affecting its chemistry) and dimensional features, is critical for applications.…”

Section: Ignitionmentioning

confidence: 99%

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Engineering of Al/CuO Reactive Multilayer Thin Films for Tunable Initiation and Actuation

Rossi

2018

Propellants Explo Pyrotec

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Sputter‐deposited Al/CuO multilayers represent the state‐of‐the‐art of energetic nanomaterials for tunable ignition and actuation because their theoretical energy densities are significantly higher than most conventional secondary explosives while being less sensitive to undesired initiation. Both the sensitivity and combustion properties (temperature, combustion velocity and products of reaction) can be manipulated via the layering, reactant spacing and stoichiometry of the multilayer and, to a lesser extent, via interface engineering. In this article, we first describe the technology of deposition of Al/CuO multilayers focusing on direct current sputter deposition followed by a comprehensive review of the materials structural characteristics. Next, experimental and theoretical works performed on these reactive multilayered materials to date is presented in terms of methods used, the results acquired on ignition and combustion properties, and conclusions drawn. Emphasis is placed on several studies elucidating the fundamental processes that underlie propagating combustion reactions. This paper provides a good support for engineers to safely propose Al/CuO multilayers structure to regulate the energy release rates and ignition threshold in order to manufacture high performance and tunable initiator devices.

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Section: Ignitionmentioning

confidence: 99%

“…We have to distinguish between the slow heating rate combustion often characterized by calorimetric measurements [35] and sustained combustion reactions. The latter is characterized by a high-temperature front that propagates rapidly through the multilayers.…”

Section: Effect Of Multilayer Strcuture On Combustion Velocitymentioning

confidence: 99%

Engineering of Al/CuO Reactive Multilayer Thin Films for Tunable Initiation and Actuation

Rossi

2018

Propellants Explo Pyrotec

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“…Introducing high‐reactivity aluminum nanoparticles (ANPs) into energetic systems endows them with fast reaction rate, enhanced energy density, high combustion temperature as well as reduced mechanical sensitivity, thus attracting extensive research interests . Previous researches show that major breakthroughs have been made in pyrotechnics, explosives, and propellants after addition of ANPs .…”

Section: Introductionmentioning

confidence: 99%

Superhydrophobic Fluorine‐Containing Protective Coating to Endow Al Nanoparticles with Long‐Term Storage Stability and Self‐Activation Reaction Capability

Guo²,

Gou³

et al. 2019

Adv Materials Inter

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The stability of aluminum (Al) nanoparticles (ANPs) is a key issue that can determine the energetic properties of Al‐based energetic materials. In this study, a surface functionalization approach is employed, using the chemical adsorption and auto polymerization effects of the 1H, 1H, 2H, 2H‐perfluorodecyltriethoxysilane (FAS‐17), to set up a highly stable barrier coating to water and further endow ANPs with long‐term storage stability and self‐activation reaction capability. The FAS‐17‐modified ANPs (AFNPs) with a superhydrophobic surface show their excellent stability in air and unique strengths in corrosion resistance to water by enhancing diffusion resistance of O2 and preventing the hydration reaction. In terms of energetic performances, compared to the two‐step slow oxidation of ANPs, the heat‐release rate of AFNPs is significantly enhanced, resulting in a drastic oxidation process profiting from the surface reaction between the FAS‐17 and alumina (Al2O3) layer. More importantly, the ignition and combustion properties of AFNPs are also greatly improved, which can undergo self‐propagation combustion with a fairly high energy output even after stored in water. At last, the possible mechanisms of oxidation resistance and self‐activation reaction capacities are also proposed.

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“…Not surprisingly, most researchers developing RSMs or relevant compositions have applied DSC and TG to characterize their materials. A review describing relevance of such measurements to ignition mechanisms of aluminum‐based RMs is available . Ideas discussed there are also applicable to other types of RMs.…”

Section: Characterization Of Rsmsmentioning

confidence: 99%

“…An idea of correlating the ignition with intermetallic exothermic reactions in an RM, discussed in detail in ref . is illustrated in Figure .…”

Section: Characterization Of Rsmsmentioning

confidence: 99%

Reactive Structural Materials: Preparation and Characterization

Hastings

Dreizin

2017

Adv Eng Mater

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Reactive structural materials, which can serve both as structural elements as well as a source of chemical energy released upon initiation have emerged as an important class of metal-based composites for use in various energetic systems. Such materials rely on a variety of exothermic reactions, from oxidation to formation of metal-metalloid and intermetallic phases. The rates of these reactions are as important as the energy that may be released, in order for them to occur at the time scales compatible with the requirements of applications. Therefore, chemical composition, scale at which reactive components are mixed, and the structure and morphology of materials are important and can be controlled by the method of preparation and compaction of the composite materials. Methods of preparation of the composite structures are briefly reviewed as well as methods of characterization of their mechanical and energetic properties. In addition to common thermo-analytical and static mechanical property measurements, dynamic tests of mechanical properties as well as ignition and combustion experiments are necessary to understand the fragmentation, initiation, and heat release expected for these materials when they are stimulated by an impact, shock, or rapid heating. Reaction mechanisms are studied presently for the thin layers and small samples of reactive materials initiated in carefully designed experiments. In other experiments, impact and explosive initiation are characterized for larger material compacts in the conditions imitating practical scenarios. Examples of results describing thermal, impact, and explosive initiation of some of the reactive materials are presented.

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Correlating ignition mechanisms of aluminum-based reactive materials with thermoanalytical measurements

Cited by 74 publications

References 147 publications

Engineering of Al/CuO Reactive Multilayer Thin Films for Tunable Initiation and Actuation

Engineering of Al/CuO Reactive Multilayer Thin Films for Tunable Initiation and Actuation

Superhydrophobic Fluorine‐Containing Protective Coating to Endow Al Nanoparticles with Long‐Term Storage Stability and Self‐Activation Reaction Capability

Reactive Structural Materials: Preparation and Characterization

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