Investigation of Ce/Al₂O₃ composite coating on anodised aluminium film by ac deposition method

Authors: Liang, C. H.; Liang, K.; Huang, N. B.

Source: Surface Engineering, Volume 25, Number 5, July 2009 , pp. 403-409(7)

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Abstract:

In order to prepare Ce/Al₂O₃ composite coating on oxide film quickly, a new process of ac deposition method in a solution containing H₂O₂ and CeCl₃ was introduced. Scanning electron microscopy/energy dispersive X-ray spectroscopy, electron probe microanalyser, X-ray diffractometer and X-ray photoelectron spectroscopy were adopted to analyse the coating. The results showed that the Ce/Al₂O₃ composite coating was easy to prepare when the Al₂O₃ film thickness was over 6·8 ?m. The Ce sediment was amorphous of cerium (III and IV) hydroxide and located into the pores near the surface of Al₂O₃ films layer. The forming mechanism of the composite coating was discussed accordingly.

Keywords: ALUMINIUM ALLOY; CE/AL2O3 COMPOSITE COATING; AC DEPOSITION METHOD; AL2O3 FILM

Document Type: Research Article

DOI: http://dx.doi.org/10.1179/174329409X409422

Publication date: 2009-07-01

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