The phase-structural transformations have been investigated in titanium surface layers after electrospark alloying (ESA) by graphite electrode. Titanium samples measuring 15x15x4 mm have been made of commercially clean titanium sheet. Its brand is BT1-0. The graphite rod of brand C-3 of 6 × 200 TU 16-538-019-69, being 40 mm at length and 6.0 mm in its diameter have been used as an anode (machining electrode). ESA process has been carried out in the energy range of W values of electrical discharges varying from 0.3 up to 3.0 J.   X-Ray diffractometric examination of samples after the electro-spark alloying by titanium carbon within the discharge energy modes of 0.3 J and 3.0 J have been performed at λCuKα - radiation. It has been stated that the phase processes on the surface with TiC formation occur faster at ~ 1/3 under identical conditions of shooting and under the energy discharge of 3.0 J (fig. 1). In both cases, TiC is the dominant phase on the electric-formed hardening surface. In the sample, after discharge electro-spark energy when W = 0.3 J, Ti phase has been represented substantially on the surface diffractometry spectrum as a satellite phase. Phase Ti is less pronounced in the sample after ESA with W = 3.0 J, because of the fact that the proportion of the titanium carbide has increased on the surface. But in this case α - C- graphite is presented in the surface layer, which indicates on more intensive transfer of anodic material (graphite) at ESA. The results showed the possibility of obtaining the carbide phases in electro-spark alloying, therefore the effectiveness of the method of electro-spark alloying to modify the structural alloys surface.   Acknowledgments: This study was founded from Moldavian national project CSSDT 15.817.02.05A “Physico-chemical methods and engineering aspects of new materials and surfaces obtaining for multiscale technologies”