Shear initiation of Al/MoO3-based reactive materials

被引:18
作者
Bouma, Richard H. B. [1 ]
Meuken, Denise [1 ]
Verbeek, Ries [1 ]
Pacheco, Maria Martinez [2 ]
Katgerman, Laurens [2 ,3 ]
机构
[1] TNO Def, Secur & Safety, NL-2280 AA Rijswijk, Netherlands
[2] Netherlands Inst Met Res, NL-2600 GA Delft, Netherlands
[3] Delft Univ Technol, NL-2600 AA Delft, Netherlands
关键词
shear initiation; PBXN-109; projectile impact; thermite;
D O I
10.1002/prep.200700051
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
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.
引用
收藏
页码:447 / 453
页数:7
相关论文
共 10 条
[1]  
AMES RG, 2006, MAT RES SOC S P, V896
[2]   IMPACT TESTING OF EXPLOSIVES AND PROPELLANTS [J].
COFFEY, CS ;
DEVOST, VF .
PROPELLANTS EXPLOSIVES PYROTECHNICS, 1995, 20 (03) :105-115
[3]  
COFFEY CS, 1981, 7 S INT DET NAV SURF, P970
[4]   HOT-SPOT IGNITION MECHANISMS FOR EXPLOSIVES AND PROPELLANTS [J].
FIELD, JE ;
BOURNE, NK ;
PALMER, SJP ;
WALLEY, SM ;
SMALLWOOD, JM .
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 1992, 339 (1654) :269-283
[5]  
JOSHI VS, 2006, 13 S INT DET NORF VI, P1092
[6]  
MEUKEN B, 2006, MAT RES SOC S P, V896
[7]  
NAMKUNG J, 2001, SHOCK COMPRESSION CO, P1003
[8]   Combustion behavior of highly energetic thermites: Nano versus micron composites [J].
Pantoya, ML ;
Granier, JJ .
PROPELLANTS EXPLOSIVES PYROTECHNICS, 2005, 30 (01) :53-62
[9]  
SON SF, 2006, MAT RES SOC S P, V896
[10]   Response of thermites to dynamic high pressure and shear [J].
Walley, SM ;
Balzer, JE ;
Proud, WG ;
Field, JE .
PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 2000, 456 (1998) :1483-1503