Introduction
Experimental
Theoretical Predictions
Kozlov–Romanov–Petrov Model
Budai–Benkö–Kaptay Model
Results
Alloy composition, wt.% |
η
0, mPa s |
E
η
, 103 J/mol |
---|---|---|
SAC387 | 0.448 | 6.28 |
(SAC387)99.5Co0.5
| 0.444 | 6.85 |
(SAC387)99.0Co1.0
| 0.357 | 9.27 |
(SAC387)98.5Co1.5
| 0.356 | 10.31 |
(SAC387)97.0Co3.0
| 0.342 | 13.14 |
Alloy composition, wt.% |
A, 102/Ω m |
B
1, 102/Ω m K |
B
2, 102/Ω m K2
|
---|---|---|---|
SAC387 | 21,749 | −7.4882 | 0.0013 |
(SAC387)99.5Co0.5
| 22,855 | −10.5778 | 0.0021 |
(SAC387)99.0Co1.0
| 24,710 | −15.5590 | 0.0048 |
(SAC387)98.5Co1.5
| 25,532 | −18.3549 | 0.0063 |
(SAC387)97.0Co3.0
| 25,448 | −18.3011 | 0.0057 |
Discussion
Alloy composition, wt.% |
η
exp, mPa s |
η
(1), mPa s |
η
(2), mPa s |
---|---|---|---|
SAC387 | 0.90 | 0.91 | 0.90 |
(SAC387)99.5Co0.5
| 0.96 | 0.93 | 0.92 |
(SAC387)99.0Co1.0
| 1.01 | 0.95 | 0.94 |
(SAC387)98.5Co1.5
| 1.13 | 0.98 | 0.95 |
(SAC387)97.0Co3.0
| 1.49 | 1.05 | 1.00 |
Sample | Phase 1 | Phase 2 | Phase 3 | Phase 4 | Phase 5 | Co-Sn phases | SEM image | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Sn, at.% | Ag, at.% | Sn, at.% | Cu, at.% | Sn, at.% | Co, at.% | Cu, at.% | Sn, at.% | Co, at.% | Cu, at.% | Sn, at.% | Co, at.% | Sn, at.% | ||||||||
SAC387 | βSn | 100 | Ag3Sn | 60 | 40 | Cu6Sn5
| 52 | 48 | ||||||||||||
BA1 | βSn | 100 | Ag3Sn | 75 | 25 | Cu6Sn5
| 52 | 48 | (Co,Cu)6Sn5
| 1 | 49 | 50 | ||||||||
BA2 | βSn | 100 | Ag3Sn | 75 | 25 | Cu6Sn5
| 52 | 48 | (Co,Cu)6Sn5
| 2–6 | 50–43 | 48–50 | (Co,Cu)Sn3
| 20 | 4 | 75 | CoSn2
| 32 | 68 | |
BA3 | βSn | 100 | Ag3Sn | 75 | 25 | Cu6Sn5
| 50 | 50 | (Co,Cu)6Sn5
| 3 | 48 | 49 | (Co,Cu)Sn3
| 20 | 4 | 76 | CoSn2
CoSn | 36 49 | 64 51 | |
BA4 | βSn | 100 | Ag3Sn | 75 | 25 | Cu6Sn5
| 49 | 51 | (Co,Cu)6Sn5
| 3 | 48 | 49 | (Co,Cu)Sn3
| 23 | 1 | 76 | CoSn3
CoSn2
CoSn | 25 33 49 | 75 67 51 |