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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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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:

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)
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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