Study on Preparation and the Characteristics of Environment-Friendly Ce-Ti-Mn Conversion Coating on Aluminum Alloy 6061

Abstract:

Preparation and the characteristics of environment-friendly Ce-Ti-Mn conversion coating on aluminum alloy 6061 were investigated by XRD, FESEM, EDS, TEM and AFM in this paper. It is indicated that coating characteristics such as the surface morphologies, microstructure and corrosion resistance, are greatly influenced by the formation technology at room temperature. The constituents and their concentration, and pH value of the conversion solution have an important role on the feature of Ce-Ti-Mn conversion film, which will significantly influence on the continuity, compactness and the crystalline structure of particles of the film. The concentrations of the main salt K₂TiF₆ and oxidizer KMnO₄ have significant effect on the characteristics of the conversion coating. The Ce-Ti-Mn film grows in a lamellar way, composing of oxide and/ or hydroxide phases of Ce, Ti and Mn, some of which are amorphous. The formation mechanism of the Ce-Ti-Mn conversion coating is discussed in detail.

• Periodical: Advanced Materials Research (Volumes 881-883)
• Pages: 1385-1390
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.881-883.1385
• Online since: January 2014
• Authors: Xian Fang Yang, Tian Quan Liang*, Wei Wei, Dong Hui Deng, Guang Qiao Xu, Cui Hua Zhao
• Keywords: Ce-Ti-Mn Conversion Coating, Formation Mechanism, Microstructure, Morpholoy, Preparation

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