Nanotribological Properties of Nanotextured Ni-Co Coating Surface Measured with AFM Colloidal Probe Technique

Surface-texturing is a useful method of modifying surface frictional performance.A simple, novel, easily-controlled method was used to fabricate different kinds of textures on an Ni-Co coating surface.The nanotribological properties were characterised by atomic force microscope (AFM) with a colloidal probe.The results showed that, compared to the original Ni-Co coating surface, the nanotextured surface can adjust the surface friction forces.The half-elliptic patterns have better tribological properties than hemispherical patterns.Therefore, both laser energy and laser scanning speed will influence the friction performances of Ni-Co coating surfaces.