active state

in electrochemical corrosion
https://doi.org/10.1351/goldbook.A00111
Corrosion
in the active state occurs by direct transfer (which may involve one or several steps) of metal ions from the metallic phase to the adjacent electrolyte. The
corrosion current
of an active metal usually increases when the
electrode potential
is made more positive, other conditions remaining constant.
Source:
PAC, 1989, 61, 19. (Electrochemical corrosion nomenclature (Recommendations 1988)) on page 21 [Terms] [Paper]