作者: Lu Yu , Jinhui Cao , Yingliang Cheng
DOI: 10.1016/J.SURFCOAT.2015.07.014
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摘要: Abstract Plasma electrolytic oxidation (PEO) of AZ31 magnesium alloy under pulsed bipolar constant current regimes has been carried out in a silicate–hexametaphosphate electrolyte without and with the suspension SiC nanoparticles. The coatings were characterized by eddy method, X-ray diffraction (XRD), scanning electron microscopy (SEM), dry sliding wear electrochemical tests. Higher growth rates found for formed presence incorporation nanoparticles into verified XRD SEM, incorporated particles to distribute relatively uniformly along coating depth. “Weak sites” existed free coatings, which significantly lowered performance coatings. In contrast, “weak are not nanoparticles, resulting an excellent applied densities PEO processes also affect higher prepared densities. All show improved corrosion resistances.