What is interDiffusion?
In an alloy atoms tend to migrate from areas of high conc to areas of low conc
What is selfDiffusion?
In an elemental solid, atoms change place in a solid
What is vacancy diffusion?
atoms exchange with vacancies ( requires activation energy to happen).
What is interstitial diffusion?
smaller atoms can diffuse between other atoms, Faster than vacancy diffusion
What is case hardening?
carbon atoms diffuse into iron atoms at the surface