Novel rare-earth-containing lead-free solders with enhanced ductility

M. A. Dudek, R. S. Sidhu, Nikhilesh Chawla

Research output: Contribution to journalArticle

51 Scopus citations

Abstract

Several lead-free material systems are available as replacements for traditional lead-based solders in microelectronic packaging, including near-eutectic combinations oftin-rich alloys. Although these materials have superior mechanical properties as compared to the Pb-Sn system, much work remains in developing these materials for electronic packaging. Small additions of rare-earth elements have been shown to refine the microstructure of several lead-free solder systems, thus improving their mechanical properties. This study investigated the effect of the addition of lanthanum on the melting behavior, microstructure, and shear strength of an Sn-3.9Ag-0.7Cu alloy. The influence of LaSn3 intermetallics on microstructural refinement and damage evolution in these novel solders is discussed.

Original languageEnglish (US)
Pages (from-to)57-62
Number of pages6
JournalJOM
Volume58
Issue number6
DOIs
StatePublished - Jun 2006

    Fingerprint

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)

Cite this