Surface tension of the 60%Bi-24%Cu-16%Sn alloy and the critical temperature of the immiscible liquid phase separation

Soonki Min, Joongchul Park, Joonho Lee

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

In order to control the core-shell structure of bimetallic lead-free solder balls, the surface tension and the critical temperature for the phase separation of two immiscible liquid phases are required. In this study, the temperature dependence of the surface tension of the 60%Bi-24%Cu-16%Sn alloy was measured using the constrained drop method. The temperature dependence of the surface tension was changed at the critical temperature due to phase separation and corresponding modification of the atomic structure of the surface layer. This simple and new procedure enables us to determine the surface tension and the critical temperature for the separation of two immiscible liquid phases simultaneously.

Original languageEnglish
Pages (from-to)4464-4466
Number of pages3
JournalMaterials Letters
Volume62
Issue number29
DOIs
Publication statusPublished - 2008 Nov 30

Keywords

  • Alloy
  • Characterization method
  • Critical temperature
  • Solder
  • Surface tension
  • Surfaces

ASJC Scopus subject areas

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

Fingerprint Dive into the research topics of 'Surface tension of the 60%Bi-24%Cu-16%Sn alloy and the critical temperature of the immiscible liquid phase separation'. Together they form a unique fingerprint.

  • Cite this