Effect of laser treatment on tungsten carbide coatings

摘要

A CO2 laser operating in continuous mode has been employed to refuse tungsten carbide coatings plasma sprayed onto a substrate of steel, in order to reduce their porosity. Wear tests block-on-ring type and hardness estimations have been carried out for both treated and untreated coatings. The results show an increase in the wear resistance and hardness of the coatings after laser treatment.