Structure and properties of Cr-CrN and Ti-TiN multilayer coatings obtained by Arc-PVD method.

Investigation results of forming and properties of protective coatings obtained by the Arc-PVD method on the martensite steel of the EI1961 (13H12NWMFA) type have been presented in the article. The CrN chromium nitride and TiN titanium nitride coatings and Cr/CrN and Ti/TiN multilayer ones were formed. The microstructures of chosen coatings obtained on the scanning electron microscope have been presented. Pitting corrosion test by the potentiodynamic method in the 3.5% NaCl solution and pitting corrosion resistance test in 10% FeCl3, solution were made. Low corrosion resistance of the TiN and Ti/TiN titanium nitride coatings and better properties of multilayer Cr/CrN chromium nitride consisting of the chromium and chromium nitride zones were found.