METHOD OF DISPERSING FLAME RETARDANT NANOPARTICLES OF BORON Russian patent published in 2019 - IPC F02K9/00 B82B1/00 

FIELD: engine building.

SUBSTANCE: invention relates to heat engines in which the heat of combustion of solid fuel, in particular, fuel from low-combustible nanoparticles of boron, is used to produce mechanical work. Method is characterized in that boron nanoparticles are passivated by solid coatings with a defined shell thickness, boron nanoparticles are mixed with air for transfer into combustion chamber, where fast heating is organized, which facilitates starting the process of dispersing initial nanoparticles with formation of secondary clusters and coating fragments, wherein radius of secondary clusters should not exceed 25 nm, then spontaneous atomization of secondary clusters, self-ignition and combustion of boron atoms and fragments of the coating in heated air takes place. As hard-ignitable nanoparticles of boron with diameter of 10 nm – 1 mcm there can be used nanoparticles in amorphous state, and as hard coatings can be used compounds B₄C, TiB₂, ZrB₂, BN, HfB₂ and others.

EFFECT: technical solution allows increasing speed and completeness of fuel combustion in a thermal engine.

4 cl, 1 dwg