Study point A: at 200 degrees Celcius 400 degrees F) -40% Tin (Sn), 60% Lead (Pb):See the Equilibrium Diagram for Solder (Lead and Tin)Show the calculations for the problems that required multiple steps.a. Which phases are present?b.What is the complete composition of each of these phases?c. What is the weight amount of each of these phases?d. What is the maximum solubility of Lead into Tin and what temperature does this occur?e. What is the maximum solubility of Tin into Lead and at what temperature does this occur?f. Write down the complete Eutectic reaction and temperature and composition that this occursat?g. What is the maximum solubility of Tin into Lead at 200 degrees Fahrenheit?h.What is the Volume fraction of each of the Phases a and Liquid?Given: Osn = 7.24 gr/cm³ and Q=11.23 gr/cm³.2 40% SNStudy Point Aat 200°C (400°F) 60% Pb20Temperature (°C)300200100-(Pb)0327°C18.312040A183°C40Composition (at% Sn)609.11 Binary Eutectic Systemsa + ATLiquid61.960Composition (wt% Sn)8080B+L232°C97.810021IT600500400300200100100(Sn)Figure 9.8 The lead-tin phase diagram.(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.)Temperature (°F)

To determine the phase present at the point A (200°C) -40 % tin and 60 Pb. Also the complete…

Answered: a. Which phases are present? b. What is…

a. Which phases are present? b. What is the complete composition of each of these phases? c. What is the weight amount of each of these phases?

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter13: The Chemistry Of Solutes And Solutions

Section: Chapter Questions

Problem 29QRT

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Question

Study point A: at 200 degrees Celcius 400 degrees F) -40% Tin (Sn), 60% Lead (Pb):
See the Equilibrium Diagram for Solder (Lead and Tin)
Show the calculations for the problems that required multiple steps.
a. Which phases are present?
b.
What is the complete composition of each of these phases?
c. What is the weight amount of each of these phases?
d. What is the maximum solubility of Lead into Tin and what temperature does this occur?
e. What is the maximum solubility of Tin into Lead and at what temperature does this occur?
f. Write down the complete Eutectic reaction and temperature and composition that this occurs
at?
g. What is the maximum solubility of Tin into Lead at 200 degrees Fahrenheit?
h.
What is the Volume fraction of each of the Phases a and Liquid?
Given: Osn = 7.24 gr/cm³ and Q=11.23 gr/cm³.
2 40% SN
Study Point A
at 200°C (400°F) 60% Pb
20
Temperature (°C)
300
200
100-
(Pb)
0
327°C
18.3
120
40
A
183°C
40
Composition (at% Sn)
60
9.11 Binary Eutectic Systems
a + A
T
Liquid
61.9
60
Composition (wt% Sn)
80
80
B+L
232°C
97.8
100
21
I
T
600
500
400
300
200
100
100
(Sn)
Figure 9.8 The lead-tin phase diagram.
(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.)
Temperature (°F)

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