Figure 5. Representative optical
microscopy of the Nano coated on the ferrite and perlite substrate. Dark
grey phases are alumina adhered on the substrate after blasting.
Figure 6 shows the SEM image of the Micro coating and the EDS mapping of
the Cr. The images allow us to understand that the lightest gray phase
of the layer observed in the SEM refers to the NiCr metal, while the
darkest phase is Cr3C2 rich in Cr. Thus,
the images allow us to observe the architecture of the layer with the
morphology of the splats of different natures.