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Phase Diagrams & Computational Thermodynamics
Bi-Cu-Pb System
Calculated Liquidus Projection
Status of the thermodynamic description:
Extrapolated from binary thermodynamic descriptionsSources of the binary descriptions:
Bi-Cu: O. Teppo, J. Niemelä and P. Taskinen, Thermochim. Acta 173 (1990) 137-150 >
Bi-Pb: S.W. Yoon and H.M. Lee, CALPHAD 22 (1998) 167-178
Cu-Pb: A. Bolcavage, C.R. Kao, S.-L. Chen and Y.A. Chang, "Thermodynamic Calculation of Phase Stability Between Copper and Lead-Indium Solder", Applications of Thermodynamics in Synthesis and Processing of Materials, Eds. P. Nash and B. Sundman, TMS, Warrendale, PA, 1995, 102-140
Calculated Invariant Equilibria
| Reaction | Phase | Mass % Bi | Mass % Cu | Mass % Pb |
|---|---|---|---|---|
| L + (Pb) -> (Cu) + (epsilon Pb)
184.9 oC |
Liquid | 36.07 | 0.01 | 63.92 |
| (Pb) | 23.27 | 0 | 76.73 | |
| (Cu) | 0 | 100 | 0 | |
| (epsilon Pb) | 27.94 | 0 | 72.06 | |
| L -> (Cu) + (epsilon Pb) + (Bi)
125.9 oC |
Liquid | 55.51 | 0 | 44.49 |
| (Cu) | 0 | 100 | 0 | |
| (epsilon Pb) | 42.13 | 0 | 57.87 | |
| (Bi) | 99.52 | 0 | 0.48 |
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 | (Bi,Cu,Pb)1 |
| Fcc | A1 | (Cu), (Pb) | Cu | Fm-3m | (Bi,Cu,Pb)1(Va)1 |
| Hcp | A3 | (epsilon Pb) | Mg | P63/mmc | (Bi,Cu,Pb)1(Va)0.5 |
| Rho | A7 | (Bi) | alpha As | R-3m | (Bi,Pb)1 |
*Major species are printed bold face