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Phase Diagrams & Computational Thermodynamics
Ag-Bi-Sn System
Calculated Liquidus Projection
Sn-rich Part
Status of the thermodynamic description:
Extrapolated from binary thermodynamic descriptionsSources of the binary descriptions:
Ag-Bi: U.R. Kattner and W.J. Boettinger, J. Electron. Mater. 23 (1994) 603-610
Ag-Sn: C.-S. Oh, J.-H. Shim, B.-J. Lee and D.N. Lee, J. Alloys and Compounds 238 (1996) 155-166
Bi-Sn: B.-J. Lee, C.-S. Oh and J.-H. Shim, J. Electron. Mater. 25 (1996) 983-991
Calculated Invariant Equilibria
| Reaction | Phase | Mass % Ag | Mass % Bi | Mass % Sn |
|---|---|---|---|---|
| L -> (Ag) + (zeta Ag) + (Bi)
263.4 oC |
Liquid | 1.89 | 97.79 | 0.32 |
| (Ag) | 89.79 | 0.84 | 9.37 | |
| (zeta Ag) | 88.13 | 0.64 | 11.23 | |
| (Bi) | 0 | 100 | 0 | |
| L -> (zeta Ag) + Ag3Sn + (Bi)
251.9 oC |
Liquid | 1.38 | 94.39 | 4.23 |
| (zeta Ag) | 80.76 | 0.53 | 18.71 | |
| Ag3Sn | 73.17 | 0 | 26.83 | |
| (Bi) | 0 | 99.97 | 0.03 | |
| L -> Ag3Sn + (Bi) + (Sn)
137.1 oC |
Liquid | 0.68 | 55.85 | 43.47 |
| Ag3Sn | 73.17 | 0 | 26.83 | |
| (Bi) | 0 | 99.89 | 0.11 | |
| (Sn) | 0.03 | 20.60 | 79.37 |
Phases, Crytal Structures and Model Descriptions
| Phase | Struktur- bericht Symbol |
Common Names | Prototype | Spacegroup | Model* |
|---|---|---|---|---|---|
| Liquid | n/a | L | n/a | n/a | (Ag,Bi,Sn)1 |
| Fcc | A1 | (Ag) | Cu | Fm-3m | (Ag,Bi,Sn)1(Va)1 |
| Hcp | A3 | (zeta Ag) | Mg | P63/mmc | (Ag,Bi,Sn)1(Va)0.5 |
| Bct | A5 | (Sn), (beta Sn) | beta Sn | I41/amd | (Ag,Bi,Sn)1 |
| Rho | A7 | (Bi) | alpha As | R-3m | (Bi,Sn)1 |
| Ag3Sn | D0alpha | epsilon | beta Cu3Ti | Pmmn | (Ag)0.75(Sn)0.25 |
*Major species are printed bold face