Niobium nitride (NbN)

nanomaterials were successfully synthesized

via gas solid reaction from oxalic niobium

precursor. The effects of synthesis conditions of

crystalline NbN, including reaction temperature,

reaction time and quantities of precursors, were

systematically investigated. The synthesized of

samples were characterized by X-ray diffraction

and scanning electron microscopy. It was

observed that with the increase of the flow rate

and isotherm time the phase change of niobium

oxide to niobium nitride occurs. We further

showed that reduction precursor mass favored

the formation single-phase of the NbN. The

morphology of the calcined powders consists

of agglomerated nanoparticles 30 to 60 nm

crystallite size