Traitement de surface en continu avec un laser Nd:YAG impulsionnel

Abstract

This work presents the results of investigations in case of laser cladding with a pulsed Nd:YAG laser. We discuss about the experimental parameters in view to realize single clad and particulary the laser data (energy, frequency, pulse duration). The main results are the clad formation beyond an energy threshold and beyond a threshold pulse dwation, the clad behaviour is the same as a clad obtained with a cw laser. Thanks to a cross-section modeling, we compare calculations with experiments and we conclude that the interaction efficiency depends widely on powder spray characteristics.