Per: Clara Campos de Alencar (Instituto Militar de Engenharia), Carlos Nelson Elias (INSTITUTO MILITAR DE ENGENHARIA), Renata Lima Lorusso Sampaio (IME), ANTONIO FABIANO COSTA DIAS FILHO (IME), AMANDA ALVES RAPOSO (IME), JOÃO PEDRO SEIBEL CERVO (IME), NATANAEL BISPO COELHO (IME), VITOR PINHEIRO DE JESUS (IME)
Abstract:
Surface roughness is one of the important parameters for achieving paint adhesion on metallic surfaces. This property refers to the surface morphology and directly influences the spread of the paint and the quality of the final finish. Adhesion is essential to ensure that the paint remains firmly attached to the surface over time, preventing flaking or detachment. Both properties are influenced by the proper choice of surface, the compatibility between the paint and the substrate, and the correct application of the paint according to the manufacturer’s recommendations. In the present work, the influence of roughness and wettability on the adhesion of paints on polished Ti G4 samples and after acid etching was analyzed. The results showed that the contact angle, measured by the goniometer, along with the roughness parameters Ra, Rz, Rp, Rv, and Rq, influence the adhesion of the paint.