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CROSS SECTION CHANGING GROWTH PHENOMENON OF Sn WHISKER IN Sn–3.8Ag–0.7Cu–1.0Er LEAD–FREE SOLDER |
HAO Hu; SHI Yaowu; XIA Zhidong; LEI Yongping; GUO Fu; LI Xiaoyan |
Institute of Advanced Materials Processing Technology; School of Materials Science and Engineering; Beijing University of Technology; Beijing 100124 |
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Cite this article:
HAO Hu SHI Yaowu XIA Zhidong LEI Yongping GUO Fu LI Xiaoyan. CROSS SECTION CHANGING GROWTH PHENOMENON OF Sn WHISKER IN Sn–3.8Ag–0.7Cu–1.0Er LEAD–FREE SOLDER. Acta Metall Sin, 2009, 45(2): 199-203.
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Abstract Large sized ErSn3 particles precipitated in the Sn–3.8Ag–0.7Cu–1.0Er solder alloy are oxidized when exposed in air, and it was found that Sn whiskers can rapidly grow on the oxidized ErSn3. During aging at room temperature, a few rod–like Sn whiskers were observed and their diameter
could be gradually changed. During aging at 150 ℃, a great number of needle–like Sn whiskers were observed and their diameter could be also changed step by step. A model, in whicthe volume stain energy is not a constant during oxidation of ErSn3, was suggested to explain the observed results.
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Received: 26 May 2008
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Fund: Supported by National Key Technology R&D Program of China (No.2006BAE03B02) |
[1] Tu K N, Li J C M. Mater Sci Eng, 2005; A409: 131
[2] Boettinger W J, Johnson C E, Bendersky L A, Moon K W, Williams M E, Stafford G R. Acta Mater, 2005; 53: 5033
[3] Tu K N, Chen C, Wu A T. J Mater Sci, 2007; 18: 269
[4] Compton K G, Mendizza A, Arnold S M. Corrosion, 1951;7: 327
[5] Herring C, Galt J K. Phys Rev, 1952; 85: 1060
[6] Tu K N. Solder Joint Technology. New York: Springer, 2007: 153
[7] Peach M O. J Appl Phys, 1952; 23: 1401
[8] Frank F C. Philos Mag, 1953; 44: 854
[9] Ellis W, Gibbons D, Treuting R. Growth of Metal Whiskers from the Solid, Growth and Perfection of Crystals New York: John Wiley & Sons, 1958: 102
[10] Kakeshita T, Shimizu K, Kawanaka R, Hasegawa T. J Mater Sci, 1982; 17: 2560
[11] Tu K N. Mater Chem Phys, 1996; 46: 217
[12] Lee B Z, Lee D N. Acta Mater, 1998; 46: 3701
[13] Sheng G T T, Hu C F, Choi W J, Tu K N, Bong Y Y, Nguyen L. J Appl Phys, 2002; 92: 64
[14] Barsomu M W, Hoffman E N, Doherty R D, Gupta S, Zavaliangos A. Phys Rev Lett, 2004; 93: 206104
[15] Tu K N, Suh J O, Wu A T C, Tamura N, Tug C H. Mater Trans, 2005; 46: 2300
[16] Hao H, Tian J, Shi Y W, Lei Y P, Xia Z D. Rare Met Mater Eng, 2006; 35: 121
(郝虎, 田君, 史耀武, 雷永平, 夏志东. 稀有金属材料与工程, 2006; 35: 1211) |
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