Chapter25: Instruments For Optical Spectrometry
Section: Chapter Questions
Problem 25.22QAP
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Question
The assumptions about the virtual process state diagrams of metals A and B similar to the lead-tin system in Figure 9.8 are as follows. (1)The α phase and β phase exist at both ends of A and B. (2) The process composition is 36 wt% A to 64 wt% B. (3) The composition of β phase at the process temperature is 88 wt% A to 12 wt% B. Find the composition of an alloy in which the weight fraction of invitation β and total β is 0.367 and 0.768, respectively.
![9.11 2원 공정계
307
조성(at% Sn)
그림 9.8 납-주석 상태도
[ : Binary Alloy Phase
Diagrams, 2nd edition, Vol.
3, T. B. Massalski (Editor-
in-Chief), 1990. ASM
International, Materials Park,
OH. 허가로 복사 사용함]
20
40
60
80
100
327°C
600
300
액상
500
232°C
a + L
200
183°C
400
18.3
61.9
97.8
300
100
200
100
40
60
80
100
(Pb)
(Sn)
조성(wt% Sn)
온도(°C)
20
온도 (°F)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc28e2c20-ab73-427b-b002-0198fe0c4f76%2F8d77df2e-1b4c-4317-8e2b-178ccbcd72b4%2F0uwmenw_processed.png&w=3840&q=75)
Transcribed Image Text:9.11 2원 공정계
307
조성(at% Sn)
그림 9.8 납-주석 상태도
[ : Binary Alloy Phase
Diagrams, 2nd edition, Vol.
3, T. B. Massalski (Editor-
in-Chief), 1990. ASM
International, Materials Park,
OH. 허가로 복사 사용함]
20
40
60
80
100
327°C
600
300
액상
500
232°C
a + L
200
183°C
400
18.3
61.9
97.8
300
100
200
100
40
60
80
100
(Pb)
(Sn)
조성(wt% Sn)
온도(°C)
20
온도 (°F)
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