Corrosion-electrochemical behavior of composite layers, obtained by laser sintering, is studied by the method of anodic potentiodynamic curves in borate neutral solution and NaOH solution. Formation of highly active nonequilibrium phases on surface results in increasing cathode activity and corrosion resistance of samples. Obtained surface layers have higher corrosion-electrochemical characteristics than iron and nickel themselves. Composition of surface layers is studied by XPS-method.

Corrosion-electrochemical behavior of composite layers obtained by laser sintering of iron-nickel-carbon nanodimensional powder has been studied in borate neutral solution by the method of anodic potentiodynamic curves. The surface layers formed have higher passivation properties than individual iron and nickel. The composition of surface layers has been studied by the method of XPS.

Electrochemical and corrosion behavior of U-10 steel after laser processing has been studied by the method of anodic potentiodynamic curves in borate buffer neutral and alkalescent solutions. The results show that the laser annealing improves the corrosion resistance of steel due to the improvement of passivation properties of the surface of steel.

Cathodic behavior of composite layers obtained by high-speed laser sintering of ultrafine powder Fe-C (C 0.5±0.1 wt. %) has been studied by the method of cathodic potentiodynamic curves. It was proved that the layers formed at the iron substrate surface have a higher cathodic activity than the samples of armсo-iron and steel 40 have. The selected samples obtained by laser sintering of Fe-0.5 % C powder with the thickness of the sintered layer of 0.6 mm demonstrate excellent cathodic activity which is better than for pure nickel. The improved cathodic activity of composite coatings is explained by formation of highly active nonequilibrium phases with nanoscale dimension.