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Effects of nanoparticles on the thermal, microstructural and mechanical properties of novel Sn3.5Ag0.5Zn composite solders

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Abstract

The effects of added nanoparticles (i.e., Al2O3 and TiO2) on the thermal, microstructural and mechanical properties of Sn3.5Ag0.5Zn nanocomposite solders have been investigated. Adding nanoparticles to the Sn3.5Ag0.5Zn solder increases the melting temperature by only 2.1–4.6 °C. It was also confirmed that the nanoparticles affect the microstructural and mechanical properties. The UTS, 0.2 YS, and microhardness of the Sn3.5Ag0.5Zn nanocomposite solder improved, which could be attributed to the refinement of the β-Sn grain size, the precipitation of Ag3(Sn, Zn) grains, and the second phase dispersion strengthening mechanism. The fracture mechanism of Sn3.5Ag0.5Zn nanocomposite solders was confirmed to be the ductile fracture mode. The cracks were initiated at the interfaces between β-Sn(Zn) grains and Ag(Zn, Sn) phases.

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Acknowledgements

The authors acknowledge the financial support of this work from the Ministry of Science and Technology, Taiwan, under Project No. MOST 106-2221-E-020-015. SEM was performed by the Precision Instrument Center of National **tung University of Science and Technology, Taiwan.

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Authors and Affiliations

  1. Department of Occupational Safety and Health, Chung Shan Medical University, No. 110, Sec.1, Chien-Kuo N. Road, Taichung, 402, Taiwan

    C. L. Chuang

  2. Department of Medical Research, Chung Shan Medical University Hospital, No. 110, Sec.1, Chien-Kuo N. Road, Taichung, 402, Taiwan

    C. L. Chuang

  3. Graduate Institute of Materials Engineering, National **tung University of Science & Technology, 1, Hseuhfu Road, Neipu, 91201, **tung, Taiwan

    L. C. Tsao

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Chuang, C.L., Tsao, L.C. Effects of nanoparticles on the thermal, microstructural and mechanical properties of novel Sn3.5Ag0.5Zn composite solders. J Mater Sci: Mater Electron 29, 4096–4105 (2018). https://doi.org/10.1007/s10854-017-8354-8

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