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 q i ≥ 10 6 W/cm 2 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 Fe 23 C 6 in the modified layer. After irradiation of Fe–VN with a high-power beam with q i ≈ 10 7 W/cm 2 at a dose of ~ 10 15 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.