The most negative
electrode potential at which the passivating
film is formed. The passivation potential is equal to or more positive than the equilibrium
potential of formation of the phase constituting the
film. Usually, the
corrosion current goes through a maximum at the passivation potential.
Source:
PAC, 1989, 61, 19
(Electrochemical corrosion nomenclature (Recommendations 1988))
on page 21