Treatment of titanium alloy by pulsed heterogeneous plasma with surface burning off and alloying by aluminium and nickel

Methods of metallography, scanning electron microscopy and X-ray analysis were used to study the effect of technological parameters on thickness, alloying degree, phase composition, structure and properties of titanium alloy surface modified by aluminium and nickel impulse alloying with surface partial melting by heterogeneity plasma of capacitor discharge. Regimes of plasmacondensate coatings formation and surface modification are determined. Fine-grained alloyed layers of a few tens microns depth have homogeneous by depth multiphase composition dependent on treatment regime. Intermetallic hardening leads to increase of hardness and wear resistance of surface layers