Synthesis of nanopowders of Fe-C system via Flow-Levitation method and study of their properties

Abstract

Nanopowders of Fe-C system are synthesized via modified Guen-Miller Flow-Levitation method by in situ reaction of nascent iron nanoparticles with acetylene. Morphology, internal structure, chemical and phase composition are studied by electron microscopy methods, including electron diffraction and element analysis, X-ray phase analysis and CNHS chemical analysis. It is shown that depending on the parameters of the reaction with acetylene (temperature, concentration), particles composition can vary from pure iron with thin carbon coating complex composition consisting predominantly of iron carbide.