Influencia del método de rugosidad, configuración de la junta y espesor del adhesivo sobre la resistencia al corte de superficies de acero inoxidable ferrítico unidas por metacrilato de metilo

Surface roughening, joint configuration, and adhesive thickness were selected as factors to analyze, by using a 2 3 design of experiments, the adhesive joint of AISI 430 steel using Methyl Methacrylate. Scanning electron microscopy observations, roughness-contour measurement and wettability analysis were performed on the adherents to analyze the adhesion, roughness, surface contour and shear strength on the adhesion tests. The statistical analysis yields that the most significant variable was the surface finishing for an adjusted R 2 of 90%. The difference of shear stress of 20.69 and 12.67 MPa was obtained for the mechanical and chemical roughening respectively, since the difference in wettability was around 78 and 113° for the same surface finishing. According to analyze the combination of factors for a shear stress of 21.80 MPa are mechanical roughening, single lap joint and glass beads.