Effect of nitride additives (AlN and Si_3N_4) on the combustion of Fe_2O_3/Al mixtures and the formation of the chemical composition of the combustion products

摘要

The method of self-propagating high-temperature synthesis (SHS) is applied to prepare cast oxynitride ceramics using a Fe_2O_3 + 4Al thermite mixture. The nitrogen-containing components of the mixture were AlN and Si_3N_4 additives. The synthesis was performed in a reactor at an initial nitrogen pressure of 8MPa. The nitrogen-containing additives are demonstrated to influence the burning rate and combustion limits of the mixtures, as well as the yield and chemical composition of the cast ceramics.