Patent AT-E399746-T1: [Translated] METHOD FOR IMPROVING THE BURNING RATE AND FLAMMABILITY OF ALUMINUM PROpellant PARTICLES AND ALUMINUM PROpellant MODIFIED

A method of improving the burn rate and ignitability of aluminium fuel particles, and a thus modified aluminium fuel for use in propellant and explosive compositions and pyrotechnic charges. Aluminium fuel particles are treated with an aqueous solution of hydrofluoric acid and a fluoride and/or complex fluoride salt of an alkali metal and/or alkaline earth metal to form a surface layer of a fluoride complex bound to the aluminium fuel particle.