Calculated Liquidus Projection
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Status of the thermodynamic description:
Extrapolated from binary thermodynamic descriptions
Sources of the binary descriptions:
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
Cu-Sn:
J.-H. Shim, C.-S. Oh, B.-J. Lee and D.N. Lee, Z. Metallkde. 87 (1996) 205-212
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 % Cu |
Mass % Pb |
Mass % Sn |
L1 + (Cu) -> L2 + beta
760.2 oC |
Liquid |
63.80 |
12.15 |
24.05 |
(Cu) |
85.38 |
0 |
14.62 |
Liquid |
2.93 |
95.71 |
1.36 |
(beta) |
78.43 |
0 |
21.57 |
L1 + beta -> L2 + gamma
732.0 oC |
Liquid |
59.50 |
11.14 |
29.36 |
beta |
75.15 |
0 |
24.85 |
Liquid |
2.34 |
95.32 |
2.34 |
gamma |
72.95 |
0 |
27.05 |
L1 + L2 + gamma -> Cu3Sn
675.5 oC |
Liquid |
44.59 |
12.47 |
42.94 |
Liquid |
1.98 |
88.56 |
9.46 |
gamma |
60.78 |
0 |
39.22 |
Cu3Sn |
61.63 |
0 |
38.37 |
L2 + gamma + Cu3Sn -> Cu10Sn3
640.1 oC |
Liquid |
1.10 |
96.05 |
2.85 |
gamma |
65.95 |
0 |
34.05 |
Cu3Sn |
61.63 |
0 |
38.37 |
Cu10Sn3 |
64.06 |
0 |
35.94 |
L2 + gamma + Cu10Sn3 -> Cu41Sn11
590.0 oC |
Liquid |
0.74 |
97.96 |
1.30 |
gamma |
68.56 |
0 |
31.44 |
Cu10Sn3 |
64.06 |
0 |
35.94 |
Cu41Sn11 |
66.56 |
0 |
33.44 |
L2 + beta -> (Cu) + gamma
585.9 oC |
Liquid |
0.80 |
98.60 |
0.60 |
beta |
76.12 |
0 |
23.88 |
(Cu) |
84.56 |
0 |
15.44 |
gamma |
73.94 |
0 |
26.06 |
L2 + Cu10Sn3 -> Cu3Sn + Cu41Sn11
582.5 oC |
Liquid |
0.69 |
98.07 |
1.24 |
Cu10Sn3 |
64.06 |
0 |
35.94 |
Cu3Sn |
61.63 |
0 |
38.37 |
Cu41Sn11 |
66.56 |
0 |
33.44 |
L2 + gamma -> (Cu) + Cu41Sn11
518.7 oC |
Liquid |
0.45 |
99.16 |
0.39 |
gamma |
72.71 |
0 |
27.29 |
(Cu) |
85.15 |
0 |
14.85 |
Cu41Sn11 |
66.56 |
0 |
33.44 |
L2 + Cu41Sn11 -> (Cu) + Cu3Sn
348.1 oC |
Liquid |
0.08 |
99.87 |
0.05 |
Cu41Sn11 |
66.56 |
0 |
33.44 |
(Cu) |
90.36 |
0 |
9.64 |
Cu3Sn |
61.63 |
0 |
38.37 |
L2 + (Cu) -> Cu3Sn + (Pb)
326.2 oC |
Liquid |
0.06 |
99.90 |
0.04 |
(Cu) |
91.04 |
0 |
8.96 |
Cu3Sn |
61.63 |
0 |
38.37 |
(Pb) |
0 |
99.97 |
0.03 |
L2 + Cu6Sn5 -> (Pb) + Cu6Sn5'
187.5 oC |
Liquid |
0.09 |
39.22 |
60.69 |
Cu6Sn5 |
39.07 |
0 |
60.93 |
(Pb) |
0 |
81.72 |
18.28 |
Cu6Sn5' |
39.07 |
0 |
60.93 |
L2 + Cu3Sn -> (Pb) + Cu6Sn5
277.9 oC |
Liquid |
0.04 |
80.83 |
19.13 |
Cu3Sn |
61.63 |
0 |
38.37 |
(Pb) |
0 |
90.28 |
9.72 |
Cu6Sn5' |
39.07 |
0 |
60.93 |
L2 -> (Pb) + (Sn) + Cu6Sn5'
181.7 oC |
Liquid |
0.09 |
37.27 |
62.64 |
(Pb) |
0 |
81.23 |
18.77 |
(Sn) |
0 |
3.39 |
96.61 |
Cu6Sn5' |
39.07 |
0 |
60.93 |
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 |
(Cu,Pb,Sn)1(Va)1 |
Bcc |
A2 |
(beta Cu), beta |
W |
Im-3m |
(Cu,Sn)1(Va)3 |
Bct |
A5 |
(Sn), (beta Sn) |
beta Sn |
I41/amd |
(Cu,Pb,Sn)1 |
|
Cu3Sn.h |
D03 |
gamma |
BiF3 |
Fm-3m |
(Cu,Sn)0.75(Cu,Sn)0.25 |
Cu41Sn11 |
... |
delta |
... |
F-43m |
Cu0.788Sn0.212 |
Cu10Sn3 |
... |
zeta |
... |
P63 |
Cu0.769Sn0.231 |
Cu3Sn |
... |
epsilon |
... |
Cmcm |
Cu0.75Sn0.25 |
Cu6Sn5 |
B81 |
eta, Cu6Sn5.h |
NiAs |
P63/mmc |
Cu0.545Sn0.455 |
Cu6Sn5' |
... |
eta ', Cu6Sn5.l |
... |
... |
Cu0.545Sn0.455 |
*Major species are printed bold face
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