Abstract：The latest research progress of synthesis technology and reactivity of nano-boron is provided in this
paper. The main synthesis methods of nano-boron powder include physical methods and chemical methods.
Physical methods include ball milling and steam condensation. Chemical methods include pyrolysis, hydrogen
plasma reduction, mechanochemical methods, self-propagating high-temperature synthesis and other redox meth‐
ods. From the perspective of industrial production, ball milling and hydrogen plasma reduction are the two opti‐
mal synthesis methods. Among them, the ball milling process is the simplest, but the quality of products pre‐
pared by hydrogen plasma reduction is better. Nano-boron powder with the purity higher than 99% can be pro‐
duced by hydrogen plasma reduction. Multiple research methods have confirmed the difference in reactivity be‐
tween nano boron powder and micro boron powder. Such as, the combustion state and combustion completeness
of boron by the ignition of boron, the drop value of reaction temperature and reaction completeness of boron
through the thermal analysis, the combustion activity of boron through the fixed -volume chamber combustion
test, or performance of mixed explosive by adding boron powder into mixed explosives. All methods shows that
nano-scale boron powder has significantly higher activity than that of micro-scale or micro-nano-scale boron
powder. Therefore, the reaction activity of boron powder can be significantly improved by the nanogenicization
of boron powder. The research results can provide important reference value in technology for the application of boron powder in explosives and propellants.
2023, Vol. 33 
