Layered reactive particles with controlled geometries, energies, and reactivities, and methods for making the same

US8431197B2 · kind B2 · utility

Assignees

• Lawrence Livermore National Security, LLC · US
• The John Hopkins University · US

Inventors

• Gregory M. Fritz · Acton, US
• Robert Knepper · Albuquerque, US
• Timothy P. Weihs · Baltimore, US
• Alexander E. Gash · Brentwood, US
• John Sze · Saratoga, US

Key dates

• Filing date: Oct 23, 2009
• Grant date: Apr 30, 2013
• Expiry date: Jun 13, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2975
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

An energetic composite having a plurality of reactive particles each having a reactive multilayer construction formed by successively depositing reactive layers on a rod-shaped substrate having a longitudinal axis, dividing the reactive-layer-deposited rod-shaped substrate into a plurality of substantially uniform longitudinal segments, and removing the rod-shaped substrate from the longitudinal segments, so that the reactive particles have a controlled, substantially uniform, cylindrically curved or otherwise rod-contoured geometry which facilitates handling and improves its packing fraction, while the reactant multilayer construction controls the stability, reactivity and energy density of the energetic composite.