Effect of oxygen on surface tension of liquid Ag-Sn alloys

Joonho Lee, Toshihiro Tanaka, Masaya Yamamoto, Shigeta Hara

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

The effect of oxygen on the surface tension of liquid Ag-Sn alloys used as one of the main components in lead-free soldering alloys was measured by the sessile drop method. The surface tension of liquid Ag-Sn alloys decreased with increasing tin content. The effect of oxygen was investigated for oxygen partial pressure ranging from about 10-17 to 10-12 atm. The effect of oxygen on the surface tension of liquid Ag-Sn alloys is closer to pure tin rather than pure silver. Thermodynamic simulation using Butler's equation showed that the surface of liquid Ag-Sn alloys is enriched with tin. Accordingly, the effect of oxygen adsorption on the surface tension of liquid Ag-Sn alloys was considered to be closer to that of tin than silver.

Original languageEnglish
Pages (from-to)625-629
Number of pages5
JournalMaterials Transactions
Volume45
Issue number3
DOIs
Publication statusPublished - 2004 Mar

Keywords

  • Lead-free soldering
  • Liquid silver-tin alloys
  • Sessile drop method
  • Surface tension

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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