*Surface Microstructure Changes Induced by Ion Beam Irradiation DOI: http://dx.doi.org/10.5772/intechopen.112015*

**Figure 10(c)** presents the height profile of the interdendritic region shown in **Figure 10(a)** and clearly shows that on average the interdendritic region has a lower height with respect to the attached dendritic region, the initial surface before being irradiated did not have this type of height variations among its microstructural constituents.

On the other hand, **Figure 10(d)** shows the interdendritic region between the two dendrites shown in **Figure 10(b)**. Once again it is clearly seen that the interdendritic region has a lower height with respect to the height of both dendrites. On the other hand, there is another microstructural element in these images that must be analyzed; this is the grain boundaries and interfaces.

In conclusion, it can establish that the monophasic region, i.e., the dendrites, has a lower sputtering yield compared to the biphasic region, the interdendritic region and that because of this difference in sputtering yield, the difference in level between the dendrites and the interdendritic region is formed.
