THE FORMATION OF SURFACE Ti-Al-V-Cu ALLOY BY COMBINED ION-PLASMA TREATMENT

In this work, surface Ti-Cu-Al-V alloy was synthesized by compression plasma flows impact on Ti-6Al-4V titanium preliminarily coated copper. The treatment of Cu/Ti-6Al-4V samples carried out three pulses generated in the nitrogen atmosphere (energy density absorbed varied range 26-43 J/cm2 per pulse). phase and elemental composition, structure, microhardness friction coefficient formed were investigated. It has been established that resulted formation α-Ti solid solution containing alloying elements layer δ-TiN surface. An increase energy during led to a decrease Cu concentration (2.7-0.5 wt %) analyzed layer. characterized uniform distribution Ti, Al, Vatoms contrast these untreated alloy. up 4.7 GPa (1.3 times higher comparison with initial Ti-6Al-4 Valloy) found after at 43 J/cm2. Tribological tests showed minimal (0.13) observed 26