Patent ID: 7670446

Claim:
A method for preparing a primary percussion primer containing a metastable nanoenergetic composite as a primary explosive ingredient where the metastable nanoenergetic composite is a sole explosive ingredient in the percussion primer, comprising: mixing a hydrophilic protective reagent with an oxide-passivated aluminum nanopowder for coating a surface of said oxide-passivated aluminum nanopowder for forming a protected surface coated oxide-passivated aluminum nanopowder, wherein the hydrophilic protective reagent is selected from at least one of a group of organic and inorganic materials consisting of: dicarboxylic acids, hydrogen ammonium phosphate salts, fluorine derivatives, and dihydrogen ammonium phosphate salts; mixing the protected oxide-passivated aluminum nanopowder and a metal oxide in a water solution to form a homogenous percussion primer slurry containing the metastable nanoenergetic composite; filling a container with a predetermined volume of the percussion primer slurry; and removing water from the slurry.