Study on Cr-Al₂O₃ Nano Composite Electrodeposition in Cr(III) Plating Bath

Abstract:

In this paper, structural and electrochemical characteristics of the Cr-Al₂O₃ nano composite coatings were investigated. Cr-Al₂O₃ nano composite coatings were electrodeposited in electrolyte containing nano Al₂O₃ particles. The influences of nano Al₂O₃ particles on the chemical composition, morphological and structural characteristics of the electrodeposited Cr-Al₂O₃ nano 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-Al₂O₃ composite electrodeposition were investigated using the electrochemical measurement methods such as cyclic voltammetry and cathodic polarization. The results reveal that the nano Al₂O₃ particles can be codeposited in the Cr matrix, micro crystal structure of the Cr-Al₂O₃ nano composite coatings are obviously refined, Cr-Al₂O₃ nano composite coatings are amorphous structure.

• Periodical: Advanced Materials Research (Volume 702)
• Pages: 181-185
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.702.181
• Online since: May 2013
• Authors: Xiang Zhu He, Li Yong Huang, Xin Sun
• Keywords: Cathodic Polarization, Cr(III) Electrodeposition, Morpholog, Nano Al₂O₃, Structure

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