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Phase Diagrams & Computational Thermodynamics
Ag-Pb-Sn System
Calculated Liquidus Projection
Status of the thermodynamic description:
Extrapolated from binary thermodynamic descriptionsSources of the binary descriptions:
Ag-Pb: B.-Z. Lee, C.-S. Oh and D.N. Lee, J. Alloys & Compds. 215 (1994) 293-301
Ag-Sn: C.-S. Oh, J.-H. Shim, B.-J. Lee and D.N. Lee, J. Alloys & Compds. 238 (1996) 155-166
Pb-Sn: H.J. Fecht, M.-X. Zhang, Y.A. Chang and J.H. Perepezko, Metall. Trans. A, 20A (1989) 795-803
Calculated Invariant Equilibria
| Reaction | Phase | Mass % Ag | Mass % Pb | Mass % Sn |
|---|---|---|---|---|
| L + (Ag) -> (Pb) + (zeta Ag)
307.8 oC |
Liquid | 1.80 | 98.02 | 0.18 |
| (Ag) | 89.21 | 0.78 | 10.01 | |
| (Pb) | 0.08 | 99.80 | 0.12 | |
| (zeta Ag) | 87.98 | 0.12 | 11.90 | |
| L + (zeta Ag) -> (Pb) + Ag3Sn
307.2 oC |
Liquid | 1.38 | 96.18 | 2.44 |
| (zeta Ag) | 80.26 | 0.05 | 19.69 | |
| (Pb) | 0.06 | 98.35 | 1.59 | |
| Ag3Sn | 73.17 | 0 | 26.83 | |
| L -> Ag3Sn + (Pb) + (Sn)
177.3 oC |
Liquid | 1.50 | 36.34 | 62.16 |
| Ag3Sn | 73.17 | 0 | 26.83 | |
| (Pb) | 0.01 | 82.34 | 17.65 | |
| (Sn) | 0.04 | 3.24 | 96.72 |
Phases, Crystal Structures and Model Descriptions
| Phase | Struktur- bericht Symbol |
Common Names | Prototype | Spacegroup | Model* |
|---|---|---|---|---|---|
| Liquid | n/a | L, L1, L2 | n/a | n/a | (Ag,Pb,Sn)1 |
| Fcc | A1 | (Ag), (Pb) | Cu | Fm-3m | (Ag,Pb,Sn)1(Va)1 |
| Hcp | A3 | (zeta Ag), (epsilon Pb) | Mg | P63/mmc | (Ag,Pb,Sn)1(Va)0.5 |
| Bct | A5 | (Sn), (beta Sn) | beta Sn | I41/amd | (Ag,Pb,Sn)1 |
| Ag3Sn | D0alpha | epsilon | beta Cu3Ti | Pmmn | (Ag)0.75(Sn)0.25 |
*Major species are printed bold face