Lubricated wear of NiCrBSi coatings partially remelted with laser

Plasma sprayed nickel based coatings are widely used at the industry due to their good wear behaviour. The laser remelting of these coatings eliminates or strongly decreases their porosity and increases their microhardness and adherence with the substrate. In this work, we define the "laser meshing" as the partial refusion of the coating's surface. This technique is applied to a NiCrBSi coating in order to achieve better anti-wear outcomes, combining the advantages of plasma spraying and laser remelting. The results are experimentally verificated and they quantify themselves attending to the variables percentage of remelted Surface and angle of "meshing cord" (remelting trace of successive parallel tracks by a laser beam). The experimental process is developed following the DOE methodology, to optimize both the test process and the objective function of minimum wear in lubricated contact.