Ch 5 and 6 Flashcards
1
Q
Diffusion
A
Net flux of any species. Magnitude depends on the concentration gradient and temperature
2
Q
Self-diffusion
A
Random movement of atoms within an essentially pure material (atoms jump around from one lattice position to another by exchanging with a vacancy)
3
Q
Interdiffusion
A
Diffusion of different atoms in opposite directions
4
Q
Flux (J)
A
The rate at which atoms, ions, particles or other species diffuse in a material
5
Q
Volume diffusion
A
Slow, high activation energy (Q)
6
Q
Grain boundary diffusion
A
Faster, lower Q
7
Q
Surface diffusion
A
Fastest, lowest Q
8
Q
A
