Effect of the substrate and interface on micro-scratch deformation of epoxy-polyester powder coatings

► Mechanical response of powder coatings under concentrated loads. ► Influence of contact conditions between epoxy-polyester coatings and indenter. ► Role of the loading conditions on the scratch deformation of the coatings. ► Deformation response of powder coatings under different loading conditions. ► Influence of the interfacial adhesion between epoxy-polyester and substrate.