Diffusion and solidification Flashcards
1
Q
What is diffusion?
A
The movement of atoms, ions or molecules within a solid, liquid or gas.
2
Q
In which material state is diffusion quickest?
A
Gas or liquid.
3
Q
What affect does temperature have on diffusion rate?
A
Increased temp means increased diffusion rate.
4
Q
Describe vacancy diffusion.
A
Atoms move into vacancies.
5
Q
Describe interstitial diffusion.
A
Small atoms pass between larger atom structure.
6
Q
Which area is diffusion used for?
A
Diffusion in solids used in manufacturing processes.
7
Q
What can solidification lead to?
A
Shrinkage.
