10 109 10-10 B 10-11 10-12 A 10-13 10-14 10-15 10-16 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 1000/T (K-) Diffusion Coefficient D(m³/s)
10 109 10-10 B 10-11 10-12 A 10-13 10-14 10-15 10-16 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 1000/T (K-) Diffusion Coefficient D(m³/s)
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Question
The following data (figure) describe the diffusion of a substitutional impurity atom in a polycrystalline solid.
Each data set below (A, B, and C) is associated with a characteristic diffusion environment for the impurity atom. The possible diffusion environments are: surface diffusion, volume diffusion, grain boundary diffusion.
Based on your understanding of solid-state diffusion mechanisms and processes, name the diffusion environment most likely associated with each data set:
Transcribed Image Text:10
109
10-10
B
10-11
10-12
A
10-13
10-14
10-15
10-16
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
1000/T (K-)
Diffusion Coefficient D(m²/s)
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