Abstract
Scanning electron microscopy, X-ray spectral microanalysis, X-ray diffraction analysis, and instrumental indentation were used for studying of oxide layers formed by plasma electrolytic oxidation (PEO) on the eutectic aluminum-silicone alloy A04130 in electrolyte with the addition of SiO2 nanoparticles of different concentrations. The optimum concentration of SiO2 nanoparticles in the electrolyte (3 g/l) was found, for achieving maximum microhardness and wear resistance of the oxide layer, exceeding the value obtained in the electrolyte without adding SiO2 nanoparticles by 1.6 and 3.5 times, respectively.
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