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Effect of nanosized graphite on properties of Sn–Bi solder

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Abstract

A novel Sn–Bi composite solder reinforced by nanosized graphite was studied. Effect of nanosized graphite content on spreadability was studied by spreading test. Microstructure of Sn–Bi solder and Sn–Bi composite solder was observed by scanning electron microscope. The tensile test and creep test for Sn–Bi solder and Sn–Bi composite solder joints were conducted in a micro-mechanical test system. The results show that the addition of nanosized graphite is harmful to the spreadability of Sn–Bi solder. The microstructure of Sn–Bi composite solder is refined gradually with the content of graphite increased. The ultimate tensile strength of Sn–Bi composite solders joints is reduced with the addition of nanosized graphite and the ultimate tensile strength of Sn–Bi + 0.07 wt% solder joint is almost unchanged compared with Sn–Bi solder joint. There is a great improvement in elongation of Sn–Bi + 0.07 wt% graphite solder joint. Furthermore, Sn–Bi + 0.07 wt% composite solder has a better creep performance compared with Sn–Bi solder.

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Authors and Affiliations

  1. School of Mechanical Engineering, Changshu Institute of Technology, No. 99, Hushan Street, Changshu, 215500, Jiangsu Province, People’s Republic of China

    Li Yang, Jun Dai & Yanfeng Jing

  2. School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212000, Jiangsu Province, People’s Republic of China

    Chengchao Du

  3. School of Mechanical and Electrical Engineering, Xuzhou Institute of Technology, Xuzhou, 221008, Jiangsu Province, People’s Republic of China

    Ning Zhang

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  1. Li Yang
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  2. Chengchao Du
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  3. Jun Dai
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  4. Ning Zhang
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  5. Yanfeng Jing
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Correspondence to Li Yang.

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Yang, L., Du, C., Dai, J. et al. Effect of nanosized graphite on properties of Sn–Bi solder. J Mater Sci: Mater Electron 24, 4180–4185 (2013). https://doi.org/10.1007/s10854-013-1380-2

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  • DOI: https://doi.org/10.1007/s10854-013-1380-2

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