Abstract
In this paper, structural and electrochemical characteristics of the Cr-Al2O3nano composite coatings were investigated. Cr-Al2O3nano composite coatings were electrodeposited in electrolyte containing nano Al2O3particles. The influences of nano Al2O3particles on the chemical composition, morphological and structural characteristics of the electrodeposited Cr-Al2O3nano composite coatings were investigated using energy dispersive X-ray spectroscopy, scanning electron microscopy and X-ray diffractometry. The electrodeposition behavior of Cr3+ion and the action mechanism of electrolyte components such as auxiliary complexing agent, wetting agent, nano Al2O3 in the process of Cr-Al2O3composite electrodeposition were investigated using the electrochemical measurement methods such as cyclic voltammetry and cathodic polarization. The results reveal that the nano Al2O3particles can be codeposited in the Cr matrix, micro crystal structure of the Cr-Al2O3nano composite coatings are obviously refined, Cr-Al2O3nano composite coatings are amorphous structure.
Published Version
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