Effect of nitrogen pressure and aluminum content in a Fe2O3/Al mixture on combustion and chemical composition of combustion products

The possibility of obtaining cast aluminum oxynitrides in the combustion of iron-aluminum termite in a nitrogen atmosphere is shown. The combustion was carried out in a sealed reactor at an initial nitrogen pressure up to 10 MPa. The effect of the initial nitrogen pressure and aluminum content (in excess of stoichiometric) in the initial mixture on the bound nitrogen content in the oxide product of the synthesis is studied. Based on thermodynamic calculations and experimental results, a model was proposed for the chemical transformation of the initial mixture in the combustion wave with formation of a two-phase high melt.