Reactive flow of molten Pb(Sn) alloys in Si grooves coated with Cu film

C. Y. Liu, K. N. Tu

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

We present an experimental study of the wetting behavior of Pb on flat and grooved Cu surfaces. The alloying of even 1–2 wt. % Sn into Pb can lead to dramatic changes in wetting angle and length flow into the grooves. The observed flow behavior disagrees with models based on the classical Washburn flow [E. W. Washburn, Phys. Rev. 17, 273 (1921)]. We conclude that the driving force of reactive wetting must take into account, besides the capillary force, the free energy change due to intermetallic compound formation.

Original languageEnglish
Pages (from-to)6308-6311
Number of pages4
JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume58
Issue number5
DOIs
StatePublished - 1998

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