Rg. Aivazyan et al., Flame propagation in mixtures of monogermane and oxygen. II. Peculiaritiesof flame propagation and the structure of combustion waves, COMB EXPL R, 35(1), 1999, pp. 70-76
Different flame propagation regimes, including a two-wave regime, are studi
ed in a closed pipe with single ignition of GeH4-O-2 mixtures. It is shown
that, depending on the initial conditions and, in particular, on the compos
ition of the initial mixtures, spatially separated chemical reaction waves
for oxidation and decomposition of monogermane are observed in certain part
s of the reaction vessel which lead to the formation of a two-layer deposit
of GeO/Ge. The temporal sequence of the separated combustion wave and wave
from which layers of solid products are deposited, as well as the location
of the deposition zones in the reaction vessel, are determined by two inte
racting chain processes - the oxidation and decomposition of monogermane. T
he thermal relaxation kinetics of the reactive mixture after passage of the
combustion waves is determined by the rate of conductive heat transfer fro
m heated solid particles (reaction products) to the gaseous phase.