Microstructure Evolution and Shear Strength of the Cu/Au80Sn20/Cu Solder Joints with Multiple Reflow Temperatures
Abstract
:1. Introduction
2. Materials and Methods
3. Results and Discussion
3.1. Microstructure Evolution
3.2. Shear Strength
4. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Au | Sn | Cu | Possible Phase | |
---|---|---|---|---|
1 | 53.47 | 12.90 | 33.63 | ζ |
2 | 52.96 | 12.83 | 34.21 | ζ |
3 | 52.97 | 12.69 | 34.33 | ζ |
4 | 53.48 | 12.97 | 33.55 | ζ |
5 | 54.91 | 14.26 | 30.38 | ζ |
6 | 49.91 | 48.40 | 1.70 | δ |
Reheating Temperature (°C) | As-Welded | 180 | 210 | 250 |
---|---|---|---|---|
Shear strength (MPa) | 31.5 | 31.1 | 30.2 | 27.3 |
Sn content (at%) | 30.43 | 32.51 | 35.83 | 40.71 |
Au | Sn | Cu | Possible Phases | |
---|---|---|---|---|
A | 0.78 | 0.22 | 99.01 | Cu(s,s) |
B | 55.32 | 30.43 | 14.26 | (ζ + δ) |
C | 55.39 | 32.51 | 12.10 | (ζ + δ) |
D | 50.33 | 43.61 | 6.06 | δ |
E | 48.62 | 44.21 | 7.17 | δ |
F | 52.30 | 35.83 | 11.88 | (ζ + δ) |
G | 52.27 | 40.71 | 7.02 | δ |
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Chen, C.; Sun, M.; Cheng, Z.; Liang, Y. Microstructure Evolution and Shear Strength of the Cu/Au80Sn20/Cu Solder Joints with Multiple Reflow Temperatures. Materials 2022, 15, 780. https://doi.org/10.3390/ma15030780
Chen C, Sun M, Cheng Z, Liang Y. Microstructure Evolution and Shear Strength of the Cu/Au80Sn20/Cu Solder Joints with Multiple Reflow Temperatures. Materials. 2022; 15(3):780. https://doi.org/10.3390/ma15030780
Chicago/Turabian StyleChen, Chaoyu, Mingxu Sun, Zhi Cheng, and Yao Liang. 2022. "Microstructure Evolution and Shear Strength of the Cu/Au80Sn20/Cu Solder Joints with Multiple Reflow Temperatures" Materials 15, no. 3: 780. https://doi.org/10.3390/ma15030780