Fabrication of Coatings on the Surface of Magnesium Alloy by Plasma Electrolytic Oxidation Using ZrO₂ and SiO₂ Nanoparticles

Figure 5

SEM images of the surface morphology of PEO coatings formed in the different electrolytes: without nanoparticles (a), with zirconia (b), and silica (c) nanopowders.

(a)

(b)

(c)