Dewetting of molten Sn on Au/Cu/Cr thin-film metallization

C. Y. Liu*, H. K. Kim, King-Ning Tu, P. A. Totta

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

42 Scopus citations

Abstract

On Au/Cu/Cr thin film surface, a drop of molten Sn first spreads out to wet the surface, but it then pulls back to dewet. The latter is due to the spalling of Cu-Sn compounds and exposing the Cr surface to the molten Sn when all of the Cu film has been consumed by the wetting reaction. Dewetting is clearly undesirable for solder joints in electronic packaging; the phenomenon is presented here.

Original languageEnglish
Pages (from-to)4014-4016
Number of pages3
JournalApplied Physics Letters
Volume69
Issue number26
DOIs
StatePublished - 23 Dec 1996

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