Abstract
AlN, AlTiN, AlZrN, and AlCrN coatings obtained by pulsed magnetron sputtering on substrates made of R18, 40X and St3 steels are considered. The experimental technique and the obtained nanostructured and amorphous layers of coatings with different properties are described. The results of studies of the microstructure, defects, elemental composition and electrochemical parameters of the obtained coatings are shown. The analysis of the corrosion behavior by the characteristics of corrosion currents density, polarization resistances, coatings electrochemical activity in 3 % NaCl solution is presented. The effect of the coating microstructure and the substrate material on the corrosion resistance is shown.
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