Epitaxial growth of Cu6Sn5 formed at Sn-based lead-free solder/non-textured polycrystalline Cu plate interface

Hideaki Tsukamoto, Tetsuro Nishimura, Kazuhiro Nogita

研究成果: Contribution to journalArticle査読

25 被引用数 (Scopus)

抄録

This study examines the epitaxial growth of the intermetallic compound (IMC) of Cu6Sn5 (or (Cu,Ni)6Sn5) that forms at the interface between molten Sn-based lead-free solders and non-textured polycrystalline Cu substrates. Sn, Sn-Cu, Sn-Cu-Ni and Sn-Ag-Cu solders were investigated. The dominant growing planes in a hexagonal structure of this IMC on Cu substrates are (101) and (102). Addition of trace Ni into Sn-Cu solders leads to an increase in (101) growth and a decrease in (102) growth. The presence of Ag in Sn-Ag-Cu solders facilitates (102) growth and suppresses (101) growth. Such an epitaxial growth should have a large influence on the mechanical and electrical characteristics of the Sn-based solder/Cu joints.

本文言語英語
ページ(範囲)2687-2690
ページ数4
ジャーナルMaterials Letters
63
30
DOI
出版ステータス出版済み - 12 31 2009

All Science Journal Classification (ASJC) codes

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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