Resonant vibration behavior of Sn-Zn-Ag solder alloys

J. M. Song, T. S. Lui, G. F. Lan, L. H. Chen

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)

Abstract

The effects of Ag content on the microstructure and the vibration deformation properties of a potential lead-free solder, Sn-9Zn-xAg (x=0.5-3.5wt.%), are examined in this study. Results show that Ag additions gave rise to microstructural changes in Sn-Zn eutectic alloys used, resulting in the appearance of proeutectic Sn-rich dendrites and Ag-Zn intermetallics (ε-AgZn3 and γ-Ag5Zn8) which replaced the Zn-rich phase. These microstructural changes strongly affect the vibration-deformed structure morphology and vibration properties. When the Ag content is higher than 1.5wt.%, the specimens possess high damping capacity and thus a long vibration life. This can be attributed to the proeutectic Sn dendrites improving the damping capacity and Ag-Zn intermetallics increasing vibration-fracture resistance.

Original languageEnglish
Pages (from-to)233-239
Number of pages7
JournalJournal of Alloys and Compounds
Volume379
Issue number1-2
DOIs
Publication statusPublished - 2004 Oct 6

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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