Abstract:
The TiCrN coatings were deposited on Cr12MoV die steel using the vacuum-arc plasma-assisted method at different values of the chromium cathode arc current (40, 60, 80 and 100 A). It was found that an increase in the chromium cathode arc current leads to an increase in the relative chromium content in the coatings from 0.26 to 0.52; an increase in the content of the (Ti, Cr)N phase from 18.3 to 94.2%; a decrease in the coherent scattering regions size from $\sim$ 30–40 to $\sim$ 5 nm; an increase in the microstrains of crystal lattices from (0.8–1.6) $\cdot$ 10$^{-3}$ to (10–11.1) $\cdot$ 10$^{-3}$. The Ti$_{0.54}$Cr$_{0.46}$N coating had the highest mechanical (hardness $H$ = 37.4 GPa, ratio of hardness and elastic modulus $H^3/E^2$ = 0.30 GPa) and tribological (friction coefficient $\mu$ = 0.512) characteristics among the studied coatings.
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