Electro-dissolution of the Bi second phase in Sn5Bi solder alloy

Tsung Chieh Chiu, Ying Ta Chiu, Kwang Lung Lin

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

This study investigated the electro-dissolution, supersaturation and recrystallization of the second phase Bi in the Sn5Bi solder under 4.0×103-6.0×103 A/cm2 current stressing at 25 °C. The ex-situ XRD analysis of the current stressed specimen, after being quenched with liquid nitrogen, reveals a reduction of the Bi orientation peaks. The SEM investigation shows the dissolution and supersaturation of the Bi phase during current stressing. The in-situ SEM investigation reveals that recrystallization of the Bi phase occurred in the unquenched specimen when the current stopped. The kinetics of the electro-dissolution were analyzed, and the results showed that the maximum dissolution rate occurred during the progress of current stressing.

Original languageEnglish
Pages (from-to)309-313
Number of pages5
JournalMaterials Letters
Volume160
DOIs
Publication statusPublished - 2015 Dec 1

All Science Journal Classification (ASJC) codes

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

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