2/10 Flashcards
1
Q
How do we increase current?
A
- Change temp to change diffusion coefficient d
- Change conc of oxidants at bulk or at surface (Cs or Cb)
- Make δ small by using convection
2
Q
What is the only way to change potential?
A
Change current
3
Q
When do the oxidation and reduction reactions have different slopes on a polarization diagram?
A
When the symmetric variable a doesnt equal 0.5
4
Q
Why do we want a large β?
A
So current doesnt increase with potential/no corrosion/there is a vertical slope
5
Q
E ______ as H+ is depleted at the metals surface. This is known as _____
A
Decreases; ηconc