In situ synthesized TiB–TiN reinforcedTi6Al4Valloy composite coatings: Microstructure, tribological and in-vitro biocompatibility

Abstract

Wear resistant TiB–TiN reinforced Ti6Al4V alloy composite coatings were deposited on Ti substrate using laser based additive manufacturing technology. Ti6Al4V alloy powder premixed with 5wt% and 15wt% of boronnitride(BN)powder was used to synthesize TiB–TiN reinforcements in situ during laser deposition. Influences of laser power, scanning speed and concentration of BN on the microstructure, mechanical, in vitro tribological and biologicalproperties of the coatings were investigated