Abstract
Sn-In-Zn alloys are promising Pb-free solders. Their interfacial reactions with Ag and Ni substrates at 230 °C are experimentally determined using reaction couple techniques. The reaction path is liquid/Ag in the Sn-20 wt%In-x wt%Zn/Ag couple when the Zn content is less than 0.7 wt%, and the reaction path changes to liquid/ε-AgZn3/γ-Ag5Zn 8/-AgZn/Ag when the Zn content is 5 wt%Zn. The reaction path is liquid/Ni3Sn4/Ni when the Zn content is less than 1.0 wt%, and the reaction path becomes liquid/γ-Ni5Zn 21/(Ni3Sn4)/Ni when the Zn content is higher than 2.0 wt%. The reaction paths in both two kinds of couples are affected by the Zn addition.
Original language | English |
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Pages (from-to) | 481-487 |
Number of pages | 7 |
Journal | Materials Chemistry and Physics |
Volume | 132 |
Issue number | 2-3 |
DOIs | |
State | Published - 15 Feb 2012 |
Keywords
- Intermetallic compounds
- Metals
- Phase equilibria
- Phase transitions