EVALUACIÓN DE LA ACTIVACIÓN SUPERFICIAL DE ACEROS INOXIDABLES USANDO SANBLASTING Y MECANIZADO PARA LA APLICACIÓN DE RECUBRIMIENTOS MEDIANTE ASPERSIÓN DE PLASMA ATMOSFÉRICO (APS).

In this work was carried out the evaluation of the surface preparation of metallic substrates with alumina (sandblasting SB) and by the use of cutting tools (HC) on stainless steels AISI 304, after which an APS coating was applied. The roughness station of the National University of Colombia Sede Medellin was used with the support of the GTS group of surfaces, to analyze the texture and comparing the profiles of roughness and its respective parameters of roughness taking of reference the parameters most heavily used in metal-mechanical context national. As a result of running both techniques on these materials it is evident that there is a significant effect on surface activation when sandblasting and machining are combined to activate the surface due to the parameters that increase surface roughness result in decreasing values of the polar component of surface free energy.