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Phase Diagrams & Computational Thermodynamics

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Ag-Bi-Sn System

Calculated Liquidus Projection

Liquidus Projection with Isotherms of the Ag-Bi-Sn System (109 KB)

Sn-rich Part

Sn-rich Region of Ag-Bi-Sn Liquidus Projection (156 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-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

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