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    • 5. 发明申请
    • EXOTHERMIC ALLOYING BIMETALLIC PARTICLES
    • 二次合金二次粒子
    • US20090090440A1
    • 2009-04-09
    • US11867231
    • 2007-10-04
    • Richard M. Kellett
    • Richard M. Kellett
    • C06B45/24B05D7/00B22F1/02
    • C06B45/30B22F1/025C06B45/02C06B45/24Y10T428/12181
    • The compositions of different energetic metallic particles and corresponding coatings are chosen to take advantage of the resulting exothermic alloying reactions when the metals are combined or alloyed through heat activation. Bimetallic particles composed of a core/shell structure of differing metals are chosen such that, upon achieving the melt point for at least one of the metals, a relatively substantial amount of exothermic heat of alloying is liberated. In an embodiment, the core metal is aluminum and the shell metal is nickel. The nickel may be applied to the outer surface of the aluminum particles using an electroless process from a metal salt solution with a reducing agent in an aqueous solution or a solvent media. The aluminum particles may be pretreated with zinc to remove any aluminum oxide. The resulting bimetallic particles may be utilized as an enhanced blast additive by being dispersed within an explosive material.
    • 选择不同能量金属颗粒和相应涂层的组成,以便当通过热激活将金属组合或合金化时,利用所得到的放热合金化反应。 选择由不同金属的核/壳结构构成的双金属颗粒,使得在达到至少一种金属的熔点时,释放相当大量的合金化放热。 在一个实施方案中,芯金属是铝,壳金属是镍。 可以使用在水溶液或溶剂介质中的金属盐溶液与还原剂的无电解方法将镍施加到铝颗粒的外表面。 铝颗粒可以用锌预处理以除去任何氧化铝。 所得到的双金属颗粒可以通过分散在爆炸性材料中用作增强的爆炸添加剂。
    • 10. 发明申请
    • PERCUSSION PRIMER COMPOSITION AND SYSTEMS INCORPORATING SAME
    • 与此同时引发的主要成分和体系
    • US20130126057A1
    • 2013-05-23
    • US13477750
    • 2012-05-22
    • Harold E. JohnstonKirstin F. WarnerReed J. BlauScott K. Lusk
    • Harold E. JohnstonKirstin F. WarnerReed J. BlauScott K. Lusk
    • C06B45/34C06B45/24C06B45/00
    • C06B45/34C06B33/08C06B45/00C06B45/18C06B45/24C06C7/00F42C19/0803F42C19/10
    • A percussion primer composition that comprises an explosive and a sensitizer, the explosive being a moderately insensitive explosive having an impact sensitivity in the range from about 0.3 kp m to about 0.75 kp m. The moderately insensitive explosive may comprise CL-20, PETN, RDX, HMX, or mixtures thereof. The sensitizer may comprise aluminum, titanium, zirconium, magnesium, melamine, styrene, lithium aluminum hydride, or mixtures thereof. In some instances, the percussion primer composition may comprise the moderately insensitive explosive precipitated onto the sensitizer. The percussion primer composition may contain an oxidizer, which in certain situations comprises a conventional oxidizer or a bismuth compound. The bismuth compound is bismuth trioxide, bismuth subnitrate, bismuth tetroxide, bismuth sulfide, or mixtures thereof. A gun cartridge and other primer-containing ordnance assemblies employing the percussion primer composition are also disclosed. Methods of forming the sensitized explosive and the percussion primer are also disclosed.
    • 包含炸药和致敏剂的冲击底漆组合物,该炸药是中等不敏感的炸药,其冲击灵敏度在约0.3kpm至约0.75kpm的范围内。 中等不敏感的炸药可以包括CL-20,PETN,RDX,HMX或其混合物。 敏化剂可以包括铝,钛,锆,镁,三聚氰胺,苯乙烯,氢化铝锂或其混合物。 在一些情况下,敲击底漆组合物可以包含沉淀在敏化剂上的中度不敏感的炸药。 敲击底漆组合物可以含有氧化剂,其在某些情况下包含常规的氧化剂或铋化合物。 铋化合物是三氧化铋,碱式硝酸铋,四氧化铋,硫化铋或其混合物。 还公开了使用冲击底漆组合物的枪筒和其它含底漆的弹药组合物。 还公开了形成敏化炸药和冲击底漆的方法。