AMPC  Vol.3 No.1 , March 2013
Preparation & Microscopic Characterization of Non-Chrome Chemical Conversion Film in Aluminum Surface
Abstract: A chromium-free environmental protection aluminum surface treatment technology was developed by theoretical analysis and a large number of experiments. Add zirconium ions and cerium ions to the treatment solution, besides adding fluoride, aluminum and hydrogen peroxide, etc. According to the orthogonal test obtained a non-chromate film-formation process of environmental friendly aluminum. The characterization methods including SEM, XPS and XRD were applied to study and analyze the morphology, composition, phase, and corrosion resistance of phosphate film, then discussed the film-forming reaction mechanism. Results showed that chemical conversion film formed on the aluminum surface was uniform, compact and stronger anti-corrosion could replace the traditional, more toxic chromate conversion film.
Cite this paper: Z. Chen, P. Lu, J. Xu and Y. Yang, "Preparation & Microscopic Characterization of Non-Chrome Chemical Conversion Film in Aluminum Surface," Advances in Materials Physics and Chemistry, Vol. 3 No. 1, 2013, pp. 7-9. doi: 10.4236/ampc.2013.31002.

[1]   S. de Souza, D. S. Yoshikawa, W. A. S. Izaltino, S. L. Assis and I. Costa, “Self-Assembling Molecules as Corrosion Inhibitors for 1050 Aluminum,” Surface and Coatings Technology, Vol. 204, No. 20, 2010, pp. 3238-3242. doi:10.1016/j.surfcoat.2010.03.021

[2]   I. Van Roy, H. Terryn and G. Goeminne, “Study of the phosphating Treatment of Aluminium Surfaces: Role of the Activating Process,” Colloids and Surfaces A: Physicochemical and Engineering Aspects, Vol. 136, No. 1-2, 1998, pp. 89-96. doi:10.1016/S0927-7757(97)00254-9

[3]   A. S. Hamdy, “A Clean Low Cost Anti-Corrosion Molybdate Based Nano-Particles Coating for Aluminum Alloys,” Progress in Organic Coatings, Vol. 56, No. 2-3, 2006, pp. 146-150. doi:10.1016/j.porgcoat.2006.03.002

[4]   F. Andreatta, P. Aldighieri, L. Paussa, R. Di Maggio, S. Rossi and L. Fedrizzi, “Electrochemical Behaviour of ZrO2 Sol-Gel Pre-Treatments on AA6060 Aluminium Alloy,” Electrochimica Acta, Vol. 52, 2007, pp. 7545-7555. doi:10.1016/j.electacta.2006.12.065

[5]   Z.-M. Chen, X.-Y. Chen, Y.-Z. Yang, et al., “Aluminum Surface Membrane of Non-Chrome Chemical Conversion Film-Forming Process,” Materials Protection, Vol. 3, 2008, pp. 45-46.

[6]   C. Spadaro, C. Dispenza and C. Sunseri, “The influence of the Nature of the Surface Oxide on the Adhesive Fracture Energy of Aluminium-Bonded Joints as Measured by T-Peel Tests,” International Journal of Adhesion and Adhesives, Vol. 28, No. 4-5, 2008, pp. 211-221. doi:10.1016/j.ijadhadh.2007.04.001

[7]   A. S. Hamdy, “Corrosion Protection of Aluminum Composites by Silicate/Cerate Conversion Coating,” Surface and Coatings Technology, Vol. 200, No. 12-13, 2006, pp. 3786-3792. doi:10.1016/j.surfcoat.2005.03.012

[8]   S. L. Zhang, “Study on Phosphating Treatment of Aluminum Alloy: Role of Yttrium Oxide,” Journal of Rare Earths, Vol. 27, No. 3, 2009, pp. 469-473. doi:10.1016/S1002-0721(08)60271-9