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Wetting Behavior and Mechanical Properties of Sn-Zn and Sn-Pb Solder Alloys

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Abstract

A comparative experimental study of the main features of the eutectic Sn-Pb alloy and Sn-Zn alloys was carried out with a view to application of the latter alloys as alternative solder materials. The resulting microstructures, mechanical properties (ultimate tensile strength and elongation), and wettability behavior (spreading area and contact angle) of a hypoeutectic Sn-Zn (Sn-4wt.%Zn), a hypereutectic Sn-Zn (Sn-12wt.%Zn), and the eutectic Sn-9wt.%Zn alloy were examined and compared with the corresponding results of the conventional Sn-40wt.%Pb solder alloy. It was found that, of the Sn-Zn alloys examined, the eutectic Sn-9wt.%Zn alloy offers a compromise between lower wettability and higher mechanical strength.

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Authors and Affiliations

  1. Department of Materials Engineering, University of Campinas, UNICAMP, P.O. Box 6122, 13083-970, Campinas, SP, Brazil

    Leonardo R. Garcia, Wislei R. Osório, Leandro C. Peixoto & Amauri Garcia

Authors
  1. Leonardo R. Garcia
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  2. Wislei R. Osório
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  3. Leandro C. Peixoto
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  4. Amauri Garcia
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Correspondence to Amauri Garcia.

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Garcia, L.R., Osório, W.R., Peixoto, L.C. et al. Wetting Behavior and Mechanical Properties of Sn-Zn and Sn-Pb Solder Alloys. J. Electron. Mater. 38, 2405–2414 (2009). https://doi.org/10.1007/s11664-009-0888-y

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  • DOI: https://doi.org/10.1007/s11664-009-0888-y

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