ABSTRACT Sn coatings were fabricated by mechanical coating technique for the first time. The coatings were characterized by XRD and SEM, among others. The SEM showed that the coatings had an irregular and uneven morphology. The influence of the rotation speed of planetary ball mill on the evolution and formation of the coatings was also investigated. The results indicated that continuous Sn coatings can be formed under a moderate rotation speed. In other words, the coatings cannot be formed when rotation speed was too high or too low. The evolution of the coatings was examined and discussed. The results showed that it followed the universal evolution law of metal coatings which included four stages. However, the exfoliation of the coatings was not seen even the milling time reached 30 h.
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L. Hao, Y. Lu, H. Sato and K. Chiba, "Fabrication of Sn Coatings on Alumina Balls by Mechanical Coating Technique and Relevant Process Analysis," Advances in Materials Physics and Chemistry, Vol. 2 No. 4, 2012, pp. 126-129. doi: 10.4236/ampc.2012.24B033.
 C. Suryanarayana, “Mechanical alloying and milling,” Prog. Mater. Sci. vol. 46, pp. 1-184, January 2001.
 H. Yoshida, Y. Lu, H. Nakayama and M. Hirohashi, “Formation of TiO2 film by mechanical coating technique and its photocatalyst activity,” J. Alloy. Compd., vol. 475, pp. 383-386, May 2009.
 Y. Lu, H. Yoshida, H. Nakayama, L. Hao and M. Hirohashi, “Formation of TiO2/Ti composite photocatalyst film by 2-step mechanical coating technique,” Mater. Sci. Forum, vol. 675-677, pp. 1229-1232, February 2011
 S. Romankov, W. Sha, S.D. Kaloshkin and K. Kaevitser, “Formation of Ti-Al coatings by mechancial alloying method,” Surf. Coat. Tech., vol. 201, pp. 3235-3245, December 2006.
 G. Gupta, K. Mondal and R. Balasubramaniam, “In situ nanocrystalline Fe-Si coating by mechanical alloying,” J. Alloy. Compd., vol. 482, pp. 118-122, August 2009.
 I. Farahbakhsh, A. Zakeri, P. Manikandan and K. Hokamoto, “Evaluation of nanostructured coating layers formed on Ni balls during mechanical alloying of Cu powder,” Appl. Surf. Sci., vol. 257, pp. 2830-2837, January 2011.
 Y. Lu, L. Hao, K. Toh and H. Yoshida, “Fabrication of TiO2/Cu composite photocatalyst thin film by 2-step mechanical coating technique and its photocatalytic activity,” Adv. Mat. Res., vol. 415-417, pp. 1942-1948, February 2012.
 L. Hao, Y. Lu, H. Asanuma and J. Guo, “The influence of the processing parameters on the formation of iron thin films on alumina balls by mechanical coating technique,” J. Mater. Process. Tech., vol. 212, pp. 1169-1176, May 2012.
 L. Hao, Y. Lu, H. Asanuma and J. Guo, “Fabrication of zinc coatings on alumina balls from zinc powder by mechanical coating technique and the process analysis,” Powder Technol., vol. 228, pp. 377-384, September 2012.
 L. Hao, Y. Lu, H. Sato, H. Asanuma and J. Guo, “Influence of metallic properties on formation and evolution of mechanical coatings during mechanical coating technique,” unpublished.
 L. Lü, M.O. Lai and S. Zhang, “Modeling of the mechanical-alloying process,” J. Mater. Process. Tech., vol. 52, pp. 539-546, June- July 1995.