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Phase Diagrams & Computational Thermodynamics

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Ag-Bi-Pb System


Calculated Liquidus Projection

Liquidus Projection with Isotherms of the Ag-Bi-Pb System (95 KB)


Status of the thermodynamic description:

Extrapolated from binary thermodynamic descriptions


Sources of the binary descriptions:

Ag-Bi: U.R. Kattner and W.J. Boettinger, J. Electron. Mater. 23 (1994) 603-610

Ag-Pb:  B.-Z. Lee, C.-S. Oh and D.N. Lee, J. Alloys & Compds. 215 (1994) 293-301  

Bi-Pb:  S.W. Yoon and H.M. Lee, CALPHAD 22 (1998) 167-178


Additional Assessments:

B. Zimmermann, Ph.D. Thesis, Universität Stuttgart, 1976


Calculated Invariant Equilibria

Reaction Phase Mass % Ag Mass % Bi Mass % Pb
L   +   (Pb)   ->   (Ag)   +   (epsilon Pb)

181.4 oC

Liquid 0.53 35.75 63.72
(Pb) 0.03 23.10 76.87
(Ag) 99.66 0.12 0.22
(epsilon Pb) 0.04 27.81 72.15
L   ->   (Ag)   +   (epsilon Pb)   +   (Bi)

124.9 oC

Liquid 0.23 55.31 44.46
(Ag) 99.85 0.10 0.05
(epsilon Pb) 0.02 42.04 57.94
(Bi) 0 99.53 0.47


Phases, Crystal Structures and Model Descriptions

Phase Struktur-
bericht
Symbol
Common Names Prototype Spacegroup Model*
 
Liquid n/a L n/a n/a (Ag,Bi,Pb)1
 
Fcc A1 (Ag), (Pb) Cu Fm-3m (Ag,Bi,Pb)1(Va)1
Hcp A3 (epsilon Pb) Mg P63/mmc (Ag,Bi,Pb)1(Va)0.5
Rho A7 (Bi) alpha As R-3m (Bi,Pb)1

*Major species are printed bold face



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