Influence of ion nitriding on the phase composition, structure and properties of carbon coatings

The basic patterns of change in the properties, phase composition and mechanical properties of single-component and doped metal (Cr, Ti, Cu) carbon coatings, subjected to ion nitriding are determined. It is shown that ion nitriding is in the surface layers of increasing the share of sp$^2$-phase with a decrease in the size of the clusters. When the ion nitriding carbonaceous coatings established education CN$_{\mathrm x}$ compounds with predominant content of N–Csp$^2$ bonds. Single-carbon coating after ion nitriding are characterized by a more dispersed structure, high content N–Csp$^3$ bonds, in comparison with the structure and composition of the coating formed under ion assisting or in the presence of molecular nitrogen.