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Effects of intermetallic morphology at the metallic particle/solder interface on mechanical properties of Sn-Ag-based solder joints

Journal of Electronic Materials volume 32, pages 1257–1264 (2003)Cite this article

Abstract

Mechanical incorporation of metallic particles in the Sn-Ag-based solder resulted in various intermetallic compound (IMC) morphologies around these particles during reflow. Unlike with the Ni particles, the IMCs formed around Cu and Ag particles are relatively insensitive to reflow profiles employed. The IMC formed around the Ni particles ranges from “sunflower” morphology to “blocky” morphology with increasing time and temperature above liquidus during the heating part of the reflow profile. Mechanical properties, such as simple shear strength and creep behavior, of these composite solders were affected by the IMC morphologies in the composite solders investigated. Sunflower-shaped IMC formed around an Ni particles resulted in higher simple shear strength and better creep properties.

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Authors and Affiliations

  1. Department of Chemical Engineering and Materials Science, Michigan State University, 48824, East Lansing, MI

    H. Rhee, J. G. Lee & K. N. Subramanian

  2. Department of Electrical and Computer Engineering, Michigan State University, USA

    F. Guo

  3. Materials Engineering Department, California Polytechnic State University, 93407, San Luis Obispo, CA

    K. C. Chen

Authors
  1. H. Rhee
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  2. F. Guo
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  3. J. G. Lee
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  4. K. C. Chen
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  5. K. N. Subramanian
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Rhee, H., Guo, F., Lee, J.G. et al. Effects of intermetallic morphology at the metallic particle/solder interface on mechanical properties of Sn-Ag-based solder joints. J. Electron. Mater. 32, 1257–1264 (2003). https://doi.org/10.1007/s11664-003-0020-7

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  • DOI: https://doi.org/10.1007/s11664-003-0020-7

Key words

  • Composite lead-free solder joints
  • mechanical behavior
  • IMC morphology