In the Pb-Sn phase diagram, what is the approximate mass fraction of the ß phase for an alloy with 90 wt% Sn and at 200°C?

Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter9: Liquids, Solids, And Materials
Section9.4: Solids And Changes Of Phase
Problem 9.9E
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The following question refer to the phase diagram shown here.
Composition (at% Sn)
60
T
Temperature (°C)
300
200
100
0
0
0
327°C
a
O 50 %
O 100%
20
T
O 100 wt% Sn
O 98 wt% Sn
O 0.3
O 90 wt% Sn
O 0.7
a + L
18.3
40
T
20
T
183°C
a + ß
40
T
Liquid
61.9
80
B+L
80
232°C
97.8
100
18
600
100
60
Composition (wt% Sn)
(Pb)
(Sn)
Adapted from Binary Alloy Phase Diagrams, 2nd edition, Vol. 3, T. B. Massalski (Editor-in-Chief), 1990. Reprinted
by permission of ASM International, Materials Park, OH.
In the Pb-Sn phase diagram, what is the approximate mass fraction of the 3 phase for an alloy with 90 wt% Sn and at 200°C?
500
400
300
200
100
Temperature (°F)
Transcribed Image Text:The following question refer to the phase diagram shown here. Composition (at% Sn) 60 T Temperature (°C) 300 200 100 0 0 0 327°C a O 50 % O 100% 20 T O 100 wt% Sn O 98 wt% Sn O 0.3 O 90 wt% Sn O 0.7 a + L 18.3 40 T 20 T 183°C a + ß 40 T Liquid 61.9 80 B+L 80 232°C 97.8 100 18 600 100 60 Composition (wt% Sn) (Pb) (Sn) Adapted from Binary Alloy Phase Diagrams, 2nd edition, Vol. 3, T. B. Massalski (Editor-in-Chief), 1990. Reprinted by permission of ASM International, Materials Park, OH. In the Pb-Sn phase diagram, what is the approximate mass fraction of the 3 phase for an alloy with 90 wt% Sn and at 200°C? 500 400 300 200 100 Temperature (°F)
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