Title
Shear initiation of Al/MoO3-based reactive materials
Author
Bouma, R.H.B.
Meuken, B.
Verbeek, H.J.
Martinez Pacheco, M.
Katgerman, L.
TNO Defensie en Veiligheid
Publication year
2007
Abstract
Reactive mixtures based on nano aluminium and nano- or micron size molybdenum trioxide have been pressed. These energetic mixtures have been tested in the Ballistic Impact Chamber and as an energetic projectile impacting a steel plate. Al/ MoO3-based reactive mixtures can be initiated by a controlled mechanical stimulus. The sensitivity depends on deformation velocity, pressing density, addition of fluorine containing binder and particle size. Nanometric mixtures of Al and MoO3 have a shorter time to reaction compared to the corresponding mixtures with micron size MoO3. The sensitivity decreases with increase in porosity. No influence of fuel/oxidizer ratio has been found in the experiments. An extensive deformation is needed before the start of reaction is observed. An analytical evaluation of shear rate cannot be applied as a detailed numerical simulation of the deformation process in PBXN-109 shows. © 2007 WILEY-VCH Verlag GmbH & Co. KGaA.
Subject
PBXN-109
Projectile Impact
Shear initiation
Thermite
Aluminum
Computer simulation
Molybdenum compounds
Particle size
Porosity
Shear deformation
Energetic mixtures
Projectile Impact
Shear initiation
Thermite
Explosives
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http://resolver.tudelft.nl/uuid:b507f628-781f-4083-b1fe-16bc5ca7a8d1
DOI
https://doi.org/10.1002/prep.200700051
TNO identifier
182985
ISSN
0721-3115
Source
Propellants, Explosives, Pyrotechnics, 32 (6), 447-453
Document type
article