TY - JOUR
T1 - Microstructural evolution of ε-AgZn3 and η-Zn phases in Sn-8.5Zn-0.5Ag-0.01Al-0.1Ga solder during aging treatment
AU - Hsuan, Teng Chun
AU - Lin, Kwang Lung
N1 - Funding Information:
Financial support of this research from the National Science Council of the Republic of China, Taiwan under the projects NSC93-2216-E-006-011 and NSC93-2216-E-006-022 is gratefully acknowledged. The authors also thank the NCKU project of Promoting Academic Excellence & Developing World Class Research Center: D96-2700.
PY - 2009/2/5
Y1 - 2009/2/5
N2 - This study investigated the microstructural evolution of ε-AgZn3 and η-Zn phases in Sn-8.5Zn-0.5Ag-0.01Al-0.1Ga solder (5-e alloy) during isothermal aging treatment at 150 °C. Zn element easily precipitates on the surface of AgZn3 intermetallic compounds (IMCs) and grows rapidly during aging. During aging, Ag dissolves in the precipitated Zn which forms the Zn-rich phase (η-Zn), the combination of ε-AgZn3 with precipitated Zn-rich became a diffusion couple. The ε-AgZn3 compound shrinks apparently upon heat exposure. Furthermore, at the interface of this diffusion couple, it seems to exit a phase transition between ε-AgZn3 IMC and η-Zn phase. This phase transition mechanism will be discussed in this paper.
AB - This study investigated the microstructural evolution of ε-AgZn3 and η-Zn phases in Sn-8.5Zn-0.5Ag-0.01Al-0.1Ga solder (5-e alloy) during isothermal aging treatment at 150 °C. Zn element easily precipitates on the surface of AgZn3 intermetallic compounds (IMCs) and grows rapidly during aging. During aging, Ag dissolves in the precipitated Zn which forms the Zn-rich phase (η-Zn), the combination of ε-AgZn3 with precipitated Zn-rich became a diffusion couple. The ε-AgZn3 compound shrinks apparently upon heat exposure. Furthermore, at the interface of this diffusion couple, it seems to exit a phase transition between ε-AgZn3 IMC and η-Zn phase. This phase transition mechanism will be discussed in this paper.
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U2 - 10.1016/j.jallcom.2008.01.121
DO - 10.1016/j.jallcom.2008.01.121
M3 - Article
AN - SCOPUS:58249143631
SN - 0925-8388
VL - 469
SP - 350
EP - 356
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
IS - 1-2
ER -