Optical and Structural Characterization of Nickel Coatings for Solar Collector Receivers

Figure 4

Sectional image of sample 30 b observed with SEM 6000x. From top to bottom, it is possible to distinguish the stainless steel in grey and the Ni layer in light grey. The black line is empty space due to the partial detaching of the holder resin (the dark grey layer at the bottom of picture).