Thermoelectric characteristics and tensile properties of Sn-9Zn-xAg lead-free solders

Fei-Yi Hung, Chih Jung Wang, Sung Min Huang, Li Hui Chen, Truan-Sheng Lui

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

This study investigates the structural characteristics and tensile properties of the Sn-9Zn-xAg alloy under an electrical current test and oil bath treatment. Experimental results indicate that alternating current (ac) and direct current (dc) led to different values for the fusing electrical current value. Electromigration of direct current (dc) reduced the fusing electrical resistance. In addition, the electrical conductivity of the Sn-9Zn-xAg alloys deteriorated significantly by adding more 2 wt.% Ag. The Sn-9Zn-1Ag specimen underwent no transformation during oil-silicon heat-treatment, however its structure experienced electromigration under electrical current testing. After electrical current testing, the needle-like Zn-rich phases had decomposed, the Ag-Zn compounds had grown, the amount of Sn-Zn eutectic phases had increased, and the content of Sn-rich phase had decreased. Also, prolonging the duration of thermoelectric testing led to a deterioration in the tensile mechanical properties of the specimens. Raising the heat-treatment temperature enhanced the solid solution effect and raised the tensile strength of the as-cast specimens.

Original languageEnglish
Pages (from-to)193-198
Number of pages6
JournalJournal of Alloys and Compounds
Volume420
Issue number1-2
DOIs
Publication statusPublished - 2006 Aug 31

Fingerprint

Tensile properties
Electromigration
Oils
Testing
Heat treatment
Acoustic impedance
Silicon
Needles
Eutectics
Deterioration
Solid solutions
Tensile strength
Mechanical properties
Lead-free solders
Temperature

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

Hung, Fei-Yi ; Wang, Chih Jung ; Huang, Sung Min ; Chen, Li Hui ; Lui, Truan-Sheng. / Thermoelectric characteristics and tensile properties of Sn-9Zn-xAg lead-free solders. In: Journal of Alloys and Compounds. 2006 ; Vol. 420, No. 1-2. pp. 193-198.
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Thermoelectric characteristics and tensile properties of Sn-9Zn-xAg lead-free solders. / Hung, Fei-Yi; Wang, Chih Jung; Huang, Sung Min; Chen, Li Hui; Lui, Truan-Sheng.

In: Journal of Alloys and Compounds, Vol. 420, No. 1-2, 31.08.2006, p. 193-198.

Research output: Contribution to journalArticle

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