Structure and properties of lead-free solders bearing micro and nano particles

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

213 Scopus Citations
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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)1-32
Journal / PublicationMaterials Science and Engineering R: Reports
Volume82
Issue number1
Publication statusPublished - Aug 2014
Externally publishedYes

Abstract

Composite lead-free solders, containing micro and nano particles, have been widely studied. Due to grain boundary drag or Zener drag, these particles can refrain the solder microstructure from coarsening in services, especially for Cu6Sn5, Ag3Sn intermetallic compounds and the β-Sn phases. Due to dispersion hardening or dislocation drag, the mechanical properties of the composite solder alloys were enhanced significantly. Moreover, these particles can influence the rate of interfacial reactions, and some particles can transform into a layer of intermetallic compound. Wettability, creep resistance, and hardness properties were affected by these particles. A systematic review of the development of these lead-free composite solders is given here, which hopefully may find applications in microbumps to be used in the future 3D IC technology.

Research Area(s)

  • Creep, Intermetallic compounds, Lead-free solders, Nano-particles

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