Study on Wear Resistance of Ti-6Al-4V Alloy Composite Coating Prepared by Laser Alloying

Titanium alloy has extensive applications in numerous fields, such as aerospace, shipbuilding, petrochemical, and bio-medical. However, under the condition of high temperature (above 700 °C), it is difficult to meet requirements performance turbine blades, piston rings, valves, etc. In this paper, powder composed Ni60A, TiN, Al, Si accordance with proportion 1:3:4:2 (mass ratio), composite coating, TiB, Ti5Si3, Al3Ti were synthesized on Ti-6Al-4V by Yttrium Aluminium Garnet(YAG) laser. The friction wear experiments carried out alloyed coatings at different loads (3N, 6N, 9N), temperatures (25 °C, 350 °C). impact load analyzed analyzing traces. results showed that abrasion loss, width, depth, volume, ratio less than alloy, surface furrow was shallow less. conditions, coating wears worse resistance not ideal.