What Distinguishes Interstitial Diffusion from Substitutional Diffusion

question 7

Multiple Choice

What distinguishes interstitial diffusion from substitutional diffusion?

• A)Interstitial diffusion occurs only when the diffusing atom and the atoms in the lattice are the same.
• B)Interstitial diffusion does not have to displace other atoms, which requires more activation energy and so substitutional diffusion is generally less probable.
• C)Interstitial diffusion occurs more slowly than substitutional diffusion.
• D)Interstitial diffusion requires a high enough temperature before it can take place.

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