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High-Density Reactive Materials
Reactive material weapon systems can be game-changers for the warfighter. The High-Density Reactive Material Program explores how enhanced potential energy density and energy coupled to the target will create new damage paradigms. Use of this technology can produce tailored energetic effects suitable to counter both conventional threats and peer-level challenges. The “tailoring” of a reactive material weapon system will depend upon the ability to understand and describe the properties of the reactive materials. Material tailoring will require macroscopic mechanical and chemical models, understanding of molecule dynamics, and developing strength/reactivity correlations. The impact on reaction mechanisms of varying material manufacturing methods must be determined. The strength, density, porosity, fracture, and aging will all impact the reaction and therefore the weapon’s effectiveness.
http://www.onr.navy.mil/Science- ... tive-Materials.aspx
Reactive material-from wiki
Fragments or projectiles made of such materials have therefore greater damaging effect than inert ones, with expected lethality increase up to 500%.
The material classes under investigation are thermites, intermetallic compounds, metal-polymer mixtures (e.g. magnesium/teflon/viton-like), metastable intermolecular composites (MIC), matrix materials, and hydrides.[1] These materials must be strong enough to act as structural components, be sufficiently stable to survive handling and launch, to penetrate a target, and sufficiently unstable to reliably ignite on impact.
The mixtures under investigation include one or more finely powdered (down to nanoparticle size) metalloids or metals like aluminium, magnesium, zirconium, titanium, tungsten, tantalum, or hafnium, with one or more oxidizers like teflon or other fluoropolymer, pressed or sintered or bonded by other method to a compact, high-density mass. To achieve a suitable reaction rate and insensitivity to impact, friction, and electrostatic discharge, fuel particles have sizes usually between 1-250 µm.[2][3] A standard composition is aluminium-teflon (Al-PTFE).
Metals which can form intermetallic compounds by an exothermic reaction are another class of candidate materials. An example is a laminate of thin alternating layers of aluminum and nickel, commercially available as NanoFoil. |
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