Series of topography measurements of a steel substrate covered by ALUZINC, then by a ppHMDSO film with cerium nanocharges. After scratching down to the ALUZINC layer, the sample is immersed in a corrosive solution and scanned at regular intervals and at incremental voltages
The scratch area evolves rapidly and fills up (explained to a great extent by self-repairing effect of anti-corrosion agent).
Mountains® tools used
4D analysis (x, y, z, t) of a series of surfaces using the 4D analysis module.
ISO 25178 functional volume parameters available in the 3D Advanced Surface Texture module.
Images courtesy of the Materials Unit at the LTI (Laboratoire de Technologies Industrielles et Matériaux), Henri Tudor Public Research Center, Luxembourg.