Premixed disilane-oxygennitrogen flames

Abstract The burning velocity of lean premixed disilane-oxygennitrogen flames has been measured at disilane and oxygen concentrations ranging from 0.55% to 1.05% and from 2% to 21%, respectively. The general trend of burning velocities has been found to be very similar to those for silane flames. However, a few different points have also been noted; above stoichiometric concentrations part of the oxygen remains unconsumed through the reaction zone, though disilane is consumed almost completely. Even in oxygen-rich flames, oxygen consumption is always less than is required for complete combustion of disilane. Further, the general trend in hydrogen production is remarkably different from that of silane flames. A large number of compounds containing SiH and SiH 2 bonds are found in the solid products. The difference between disilane and silane combustion seems to be caused by the difference in the flame temperature.