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

Figure 7

Microphotographs of the cross section of coatings obtained in electrolytes of different compositions: without nanoparticles (a) and with ZrO₂ (b) and SiO₂ (c) nanoparticles. Below SEM images one can see EDS data on the distribution of main elements over the coating thickness.

(a)

(b)

(c)