Coated boron and agglomerated boron are the most important ingredients of boron-based fuel-rich propellants, and therefore the study concerning the ignition and combustion performance of them could provide helpful information concerning combustion mechanisms and formulation optimization of the propellants. In this study, coated boron and agglomerated boron with different formulation were prepared, and the ignition and combustion performance of them were investigated by the high-power CO2 laser ignition system equipped with spectrometer and high-speed camera. The experimental results show that the combustion of coated boron and agglomerated boron could be improved by using compound of boron and magnesium (CBM) as raw material; both higher pressure and higher content of magnesium have positive effect on the combustion intensity of the boron particles; the ignition delay time of boron particles increases after the coating and agglomeration processes due to the slow oxidation of boron, and ingredients and pressure have little effect on the ignition delay time of coated boron and agglomerated boron.
ignition and combustion performance, coated boron, agglomerated boron, compound of boron and magnesium, amorphous boron