Combustion Synthesis of Cast Iron Aluminides from a Fe2O3 + Al Mixture
摘要
Abstract—
This paper reports the preparation of cast iron aluminides from thermite-type highly exothermic mixtures at atmosphere pressure in air. We have studied general aspects of combustion during the synthesis process and evaluated the ingot yield of the synthesized iron aluminides and the relative weight loss of the starting mixture components and final products in the combustion process. The chemical and phase compositions of three synthesized cast phase-pure iron aluminides—Fe3Al, FeAl, and Fe2Al5—have been determined, their microstructures have been studied, and their microhardness has been measured.