Calculate the diffusion coefficients for hydrogen through BCC iron and FCC cal aluminum at 25°C (room temperature). Do ст? and Qa = 9780 for hydrogen тol 0.11 sec in aluminum. Based on these calculations, which material is best suited for a high- pressure hydrogen storage tank? words DFocus 501 PM ype here to search 2/24/2022
![Calculate the diffusion coefficients for hydrogen through BCC iron and FCC
ст?
cal
aluminum at 25°C (room temperature). Do = 0.11
and Qa = 9780-
mol
for hydrogen
sec
in aluminum. Based on these calculations, which material is best suited for a high-
pressure hydrogen storage tank?
25
D Focus
5:01 PM
words
2/24/2022
10
IA
W
Type here to search
165HZ V
ROG ZEPHYRUS
JHD/
100% DOI-P3
PANTONE
Validated
F9
F10
DELETE
F8
AURA
%24
%24
S8555533
T
U
1D
G
H]
K](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F05419715-1bd0-4457-a143-03af22167dbf%2F156fd739-43ea-4094-8b20-4d7ace551d43%2Fc9ywdwc_processed.jpeg&w=3840&q=75)
Calculate diffusion coefficient for diffusion of hydrogen through BCC iron using the following equation.,
D = Do e(-Q/RT) ---- 1
Here, Q is the activation energy, R is the gas constant, T is the absolute temperature, and Do is the constant for given diffusion system.
Obtain the following data from table Diffusion data for selected materials in textbook page number 149, for diffusion of hydrogen through BCC iron,
Activation energy, Q = 3600 cal/mol
Diffusion constant, Do = 0.0012 cm2/s
Substitute0.0012 for Do ,3600 for Q, 1.987 cal/mol K for R, and (25+273)K for T in equation (1).
We get ., D = 0.0012 e(-3600/1.987×298)
D = 2.7464.×10-6 cm2/s
Therefore, the diffusion coefficient for diffusion of hydrogen through BCC iron at is 2.7464 × 10-6 cm2/s
Trending now
This is a popular solution!
Step by step
Solved in 3 steps
