Phase Transformations in Nitrided Ferrovanadium under the Action of a High Power Carbon Ion Beam

The phase and elemental composition of the near-surface layer of nitrided ferrovanadium irradiated with a high-power ion beam has been investigated by XRD and SEM methods. The impact of a powerful beam of the Temp-4M setup with an energy of carbon ions of 250 keV at a radiation pulse duration 10–7 s and a power density of charged particles qi ≥ 106 W/cm2 causes melting of the Fe–VN composite and partial evaporation of elements with a high vapor pressure from the surface layer. High-speed solidification of the melt on the surface of the Fe–VN target leads to the formation of highly dispersed vanadium nitride and tetragonal carbide Fe23C6 in the modified layer. After irradiation of Fe–VN with a high-power beam with qi ≈ 107 W/cm2 at a dose of ~ 1015 cm–2, a violation of the translational invariance of the distribution of intercalated carbon atoms, a structural redistribution of Fe and V atoms, and the formation of X-ray amorphous microliquations of Fe–V and gas–carbon complexes are observed in the modified layer.