Abstract
Titanium nitride and chromium nitride coatings were formed on a gray cast iron by condensation from a plasma phase in vacuum with the ion bombardment of the sample surface by titanium or chromium plasma flows in a residual nitrogen atmosphere. The element and phase composition of coatings were studied before and after annealing for 1–43 h in air at temperature 700 °C using Auger electron spectroscopy (AES) and X-ray diffraction (XRD). It is established that titanium nitride coatings are single-phase TiN system with a (1 1 1) preferred growth orientation, and chromium nitride coatings—a two-phase system: CrN and Cr 2N phases. The annealing of coatings at the atmospheric pressure and the temperature of 700 °C in the range of 1–43 h results in the deceleration of the oxidation process of the material substrate for chromium nitride with respect to titanium nitride coatings.
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